2024 and 2025 are seeing huge growth for LFP based BESS in Australia, LiFePo4 Australia can assist in the supply and procurement of Hithium, EVE, and CATL commercial solutions. We don’t just do residential, off-grid and small business, we can help SME and commercial companies make the right connections and supply anything from a cell, right up to MegaWatt hour container batteries. We have formed partnerships with many of the leading Lithium, LiFePo4 and Sodium battery manufacturing companies globally.
Now lets get to the news!
Lightsource BP, a global leader in renewable energy development, has partnered with Hithium, a prominent energy storage solutions provider, to supply a 640 MWh Battery Energy Storage System (BESS) for the Woolooga Solar Farm in Queensland, Australia.
Project Overview
The Woolooga Solar Farm, located in Queensland’s Lower Wonga region, comprises three sites totaling 214 MWp of generation capacity, sharing a 176 MWac grid export connection. The integration of a 222 MW/640 MWh BESS will enhance the farm’s ability to store and dispatch solar energy, thereby improving grid stability and reliability.
Hithium’s 5 MWh BESS Containers
This project marks the first deployment in Australia of Hithium’s 5 MWh containerized BESS solution. Each 20-foot container houses prismatic 314 Ah lithium iron phosphate (LFP) cells, offering a 25-year warranty. These double-length modules with an IP67 protection rating provide 40% more energy compared to previous generations, optimizing space and performance.
Partnerships and Operations
Hithium is collaborating with INTEC Energy Solutions to deliver full Engineering, Procurement, and Construction (EPC) services, along with 25 years of operation and maintenance for the Woolooga BESS Stage 1 project. This partnership aims to ensure the project’s long-term efficiency and reliability.
In line with sustainability goals, Envirostream Australia, a subsidiary of Livium, has signed an exclusive agreement with Hithium to recycle the lithium-ion batteries supplied for this project. This initiative underscores a commitment to responsible resource management and environmental stewardship.
Significance for Australia’s Renewable Energy Sector
The Woolooga BESS project represents a significant advancement in Australia’s renewable energy landscape. By integrating substantial energy storage capacity with solar generation, it addresses the challenges of renewable energy variability, providing optimized grid management, load regulation, and ensuring continuity and stability of supply.
This collaboration between Lightsource bp and Hithium not only enhances renewable energy integration in Australia but also sets a precedent for future large-scale energy storage projects in the region.
The 2024 standard no longer includes a “stand-alone mode” definition.
Previously, systems that could operate independent of the grid were sometimes lumped under “stand-alone” references. Now, those arrangements are typically categorized as Independent, Alternative, or Substitute supplies, each with specific requirements.
Why It Matters:
Eliminates confusion and overlapping requirements that once existed for hybrid or off-grid-capable systems.
Provides more consistent terminology, ensuring users apply the correct standard(s) for their specific supply arrangement.
2. Clear Demarcation of Standards
AS/NZS 5033:
Covers the PV array up to the input terminals of the inverter.
AS/NZS 4777.1:
Covers the installation requirements for the inverter energy system (IES).
AS/NZS 5139:
Applies to battery systems from the battery through to the inverter input terminals.
Why It Matters:
This distinct separation streamlines updates and reduces the confusion of having overlapping or redundant clauses in different standards.
Each standard has a well-defined scope, making it easier to maintain compliance and manage changes over a system’s lifecycle.
3. Phase Balance Update
What Changed:
A new 30 kVA limit is set for single-phase installations.
The permissible capacity depends on grid supply capacity or available overcurrent protection.
Stricter phase balance requirements apply particularly to commercial and industrial installations to ensure equitable load distribution across phases.
Why It Matters:
Helps prevent grid imbalances and voltage rise issues.
Provides a clear threshold for when multi-phase distribution or load balancing measures are required.
4. Interface Protection Replaces Central Protection
What Changed:
“Central protection” terminology is replaced by “interface protection.”
Systems under 200 kVA generally do not require interface protection (subject to DNSP approval).
For larger systems, DNSPs still have authority to require interface protection or additional protective measures.
Why It Matters:
Aligns Australian/New Zealand terminology with IEC standards and global best practices.
Offers greater flexibility for small to medium-scale IES by removing a layer of complexity and cost.
5. Minimizing Main Switches (Two Inverter Main Switches)
What Changed:
Limits the number of main switches for inverters to two per switchboard that also supplies other loads.
For systems with three or more inverters, an aggregation board must be installed so a single main switch can isolate all inverters.
Why It Matters:
Simplifies the isolation process, improves safety, and reduces confusion during maintenance or emergency shutdowns.
Ensures a more organized switchboard layout and fewer potential error points.
6. New Definitions
6.1 Inverter Power Sharing Devices (IPSD)
What They Are:
Technology that allows multiple users (e.g., apartment dwellers) to share a single PV system or a set of inverters.
IP sharing can also apply in other multi-occupancy or embedded network scenarios.
Key Requirements:
Inverters used with IPSDs must be tested to AS/NZS 4777.2.
Systems over 30 kVA require interface protection.
Must island in under 2 seconds upon loss of grid connection.
Signage and protective measures (like securing current transformers, system schematics) required at the main switchboard.
Why It Matters:
Facilitates new business models and more efficient use of rooftop PV in multi-tenancy buildings.
6.2 Vehicle-to-Grid (V2G) Technology
What Changed:
Mode 3 (AC) and Mode 4 (DC) electric vehicle (EV) chargers can now be used for reverse power flow to the grid (i.e., V2G).
Mode 1 & 2 (plug-in type chargers) do not allow reverse power flow and thus are outside AS/NZS 4777.1 scope.
Why It Matters:
Recognizes the growing importance of bidirectional EV charging in demand management and grid support.
Establishes clear rules for safe and compliant integration of EVs as part of the IES.
6.3 New Supply Type Definitions
Supplementary Supply
Operates in parallel with the normal supply but switches off when grid supply is lost.
Formerly considered “stand-alone,” can be grid-charged but no export allowed.
Substitute Supply
Single point supply during grid failure, max rating 15 A.
Why It Matters:
Provides a clear operational framework for each supply category.
Reduces confusion about when and how each supply type can connect or export.
7. Alignment with IEC Terminology
What Changed:
“Secondary protection” is now termed “interface protection.”
Reflects the ongoing efforts to harmonize Australian/New Zealand standards with international IEC standards.
Why It Matters:
Encourages global consistency and makes local standards easier to interpret for international manufacturers and designers.
8. Interface Protection for Multiple Electrical Installations
What Changed:
In multiple electrical installations (e.g., large embedded networks or precincts), interface protection is not required for systems over 200 kVA (assuming DNSP approval).
Systems under 200 kVA can also be exempt, but it depends on DNSP and local conditions.
Why It Matters:
Offers greater flexibility for large-scale and multi-tenant setups, reducing redundant protection systems.
9. Ganged Devices and Isolator Requirements
What Changed:
Ganged devices used to isolate more than one IES are considered one main switch in multiple IES scenarios.
If one inverter is within 3 meters and visible from the main switchboard, no adjacent AC isolator at the inverter is needed.
Why It Matters:
Reduces hardware duplication and simplifies installations, while still providing adequate safety and a single point of isolation.
10. DC and AC EVSE Supply Modes
What Changed:
Supplementary or Alternative supplies can be provided by both DC and AC EVSE.
EV arrangements that don’t parallel the grid (e.g., “Alternative Supply”) are not subject to AS/NZS 4777.2.
Why It Matters:
Expands the permissible configurations for EV charging solutions, supporting both AC and DC approaches.
Streamlines compliance where EV chargers do not feed power back to the grid.
11. Inverter Power Sharing Device (IPSD) Requirements
What Changed:
Clarifies that IPSDs must use AS/NZS 4777.2-compliant inverters.
For IES over 30 kVA, interface protection is mandatory.
Islanding requirements dictate a disconnect within 2 seconds of grid loss.
Why It Matters:
Ensures multi-user PV setups remain safe and reliable under both normal and abnormal grid conditions.
Mandates adequate labeling and protection to avoid confusion among multiple occupants.
12. Signage and Protection for IPSDs
What Changed:
The standard outlines comprehensive signage requirements for IPSDs, including schematic diagrams, warning labels, and secure current transformers.
Must be installed at the main switchboard or a clearly visible location.
Why It Matters:
Promotes safer operation, quicker identification of system components, and clearer emergency shutdown procedures.
Particularly important for multi-tenant buildings where multiple parties share the same generation resource.
Conclusion
AS/NZS 4777.1:2024 reflects the ongoing evolution of inverter energy systems and their integration with emerging technologies such as vehicle-to-grid and power-sharing devices. By removing ambiguous references (e.g., stand-alone mode), clarifying standards boundaries, and updating terminology to align with international norms, the 2024 standard aims to:
Simplify compliance for designers, installers, and system owners.
Enhance safety and clarity for multi-technology and multi-occupancy scenarios.
Foster innovative solutions (e.g., IPSDs, V2G) that support dynamic and flexible energy management.
Stakeholders involved in specifying, installing, or maintaining grid-connected inverters should carefully review these changes and ensure full compliance with AS/NZS 4777.1:2024, AS/NZS 4777.2, and any local DNSP requirements.
Disclaimer (Australia)
The information provided here is for general guidance and educational purposes only. We are not licensed electricians, accredited solar installers, or qualified to provide definitive technical or legal advice in Australia. While we strive to present accurate and up-to-date information, the standards and regulations governing electrical installations (including AS/NZS 4777.1) may change over time and can vary depending on your state or territory.
Ultimately, it is the responsibility of the licensed installer or qualified professional to ensure compliance with all applicable standards, regulations, and local network requirements. Always consult with a certified electrician, accredited installer, or relevant authority before commencing any installation, modification, or maintenance of grid-connected inverter systems. We disclaim all liability for any direct, indirect, or consequential loss or damage arising from reliance on, or use of, the information provided.
a comprehensive guide specifically for sub-60VDC lithium battery systems that include an inverter or are connected to the grid in Australia. Since these systems operate with AC components, grounding is mandatory under most circumstances to ensure safety and regulatory compliance. Always consult a licensed electrician or qualified engineer for final verification.
Safety Guidelines for Grounding Sub-60VDC Lithium Battery Systems with Inverters or Grid Connections in Australia
1. Introduction
Sub-60VDC lithium battery systems are classified as Extra-Low Voltage (ELV) under AS/NZS 3000:2018. However, once an inverter or grid connection is involved, the system can operate with higher AC voltages that carry an increased risk of electric shock and fault currents. Grounding provides a safe path for these fault currents, protecting both equipment and personnel.
2. Key Considerations
Voltage Classification
Sub-60VDC is considered ELV, but the addition of an inverter or grid interface means AC voltages are present.
Mandatory Grounding
Any system with an inverter or grid tie must be grounded to comply with AS/NZS 3000:2018 and relevant local regulations.
Regulatory Context
Clause 4.4 of AS/NZS 3000:2018 emphasizes that safety at higher voltages relies on proper insulation and protective measures, including grounding.
3. Grounding Requirements
Connection to Earth
A dedicated earth conductor must be provided to ensure that any fault current has a low-resistance path to ground.
The earth connection should be installed in accordance with local regulations, including proper bonding to the main earthing system.
Bonding of Equipment
Metal enclosures, frames, or supports associated with the inverter and battery system must be bonded to the grounding system to eliminate touch voltages.
Ground-Fault Detection
In many cases, ground-fault detection and protection devices are required to ensure that any earth leakage or ground fault is quickly identified and isolated.
4. System Setup
Inverter Integration
AC Side: The inverter’s AC output circuit must be grounded and protected per AS/NZS 3000:2018.
DC Side: While the battery side is considered ELV, the presence of the inverter typically necessitates a grounding arrangement for overall fault protection.
Grid Connection
Compliance with Utility Standards: Each electricity distributor may have additional grounding and metering requirements.
Residual Current Devices (RCDs): Often required on the AC side to protect against fault currents and ensure fast disconnection in the event of a ground fault.
Isolation Transformers (If Applicable)
Some systems include isolation transformers for additional safety. These transformers must also be bonded to the grounding system in accordance with local regulations.
5. Larger Systems & Parallel Configurations
Multiple Batteries or Parallel Strings
When multiple battery packs are paralleled, ensure all enclosures and negative/positive busbars are consistently referenced to ground if required by design.
Use suitably rated protective devices (fuses, circuit breakers) for each battery string.
High-Power or Industrial Systems
Larger installations with higher fault currents may require specialized grounding solutions (e.g., ground rods, earth grids).
Industrial sites may have additional standards or site-specific requirements.
Earth Faults: Grounding ensures a controlled path for fault currents, reducing the risk of fire or electric shock.
Short Circuits: Proper earthing aids in the rapid operation of circuit breakers or fuses, minimizing damage to equipment.
Overvoltage & Surges
Lightning strikes or grid disturbances can introduce high transient voltages.
Surge protection devices (SPDs) work most effectively when a reliable grounding system is in place.
Environmental Factors
Moisture & Corrosion: In humid or corrosive environments, grounding can mitigate risks associated with damaged insulation or rusted enclosures.
Hazardous Locations: Specialized facilities, such as chemical plants, may have stricter grounding requirements to prevent sparking or ignition.
7. Regulatory Requirements
AS/NZS 3000:2018
Governs electrical wiring rules, including grounding and bonding requirements.
Clause 4.4 underlines general safety principles for extra-low voltage systems with higher-risk elements (like inverters).
Local and Utility Regulations
Requirements can vary between states or electricity distributors.
Some areas enforce additional measures, such as mandatory RCDs on dedicated circuits.
Industry-Specific Standards
Sectors like healthcare, mining, or telecommunications may have extra guidelines for grounding to protect sensitive equipment and ensure robust fault management.
8. Practical Recommendations
Use Qualified Professionals
Hire a licensed electrician or engineer knowledgeable about AS/NZS 3000:2018 and local codes.
An expert can properly size conductors, select protective devices, and ensure compliant grounding.
Install Comprehensive Protection
Combine grounding with overcurrent protection (circuit breakers, fuses), RCDs, and surge protection devices.
Verify correct polarity and cable connections to avoid dangerous wiring errors.
Perform Regular Inspections
Periodically check grounding connections, looking for corrosion or loose bonds.
Routine testing (e.g., earth continuity tests) helps maintain a safe and compliant system.
Document Your Setup
Keep detailed records of grounding points, conductor sizes, and protective devices.
Maintain installation diagrams and test certificates for reference, future maintenance, or inspections.
9. Conclusion
When sub-60VDC lithium battery systems involve inverters or a connection to the grid, grounding is mandatory to handle AC voltages safely and comply with AS/NZS 3000:2018. Proper grounding reduces shock risks, aids in fault clearing, and protects both equipment and people. To achieve a safe and legally compliant setup:
Follow local and national regulations for grounding and bonding.
Incorporate protective devices such as circuit breakers, fuses, RCDs, and surge protectors.
Consult qualified professionals for system design, installation, and inspection.
By adhering to these guidelines, you ensure a robust, safe, and compliant energy storage solution in Australia.
Disclaimer: This information is a general overview and does not replace official standards or on-site professional advice. Always consult a licensed electrician or qualified engineer to ensure full compliance with current regulations and safety best practices.
The Smarter Energy Choice for Australian Households
Low Voltage (LV) 51.2V LiFePO4 batteries are transforming the way Australian homes generate, store, and use energy. Whether you’re aiming for energy independence with an off-grid system or enhancing your on-grid solar setup, these batteries provide unparalleled reliability, safety, and efficiency.
Discover why they’re the perfect fit for your energy needs.
Why Choose LV 51.2V LiFePO4 Batteries?
Safety and Reliability
Stable Chemistry: LiFePO4 batteries are among the safest lithium chemistries, with a proven track record for thermal and chemical stability.
Long Lifespan: Designed for durability, these batteries can deliver up to 10,000+ cycles, ensuring 10–15 years of reliable performance.
LV (low voltage) For most residential, off-grid, or backup power systems, 51.2V LiFePO4 batteries offer a compelling combination of safety, simplicity, flexibility, and cost-efficiency.
Optimal Performance for Solar Applications
High Efficiency: Maximize your energy usage with minimal losses during charge and discharge.
Consistent Output: Delivers stable voltage throughout its charge cycle, making it ideal for sensitive electronics and high-power devices.
Cost-Effective Energy Storage
Lower total cost of ownership compared to alternatives
Reduced reliance on grid power saves you money on electricity bills.
Environmentally Friendly
95%+ recyclable and free from toxic heavy metals, contributing to a greener planet.
51.2V LiFePO4 batteries are significantly cheaper per kWh compared to proprietary systems like the Tesla Powerwall.
Proprietary systems often include built-in software, branding, and installation costs that drive up the price.
No Forced Ecosystem: Proprietary systems like the Powerwall include built in inverters and often lock you into a particular ecosystem, increasing overall costs.With 51.2V batteries, you can choose compatible inverters, chargers, and monitoring systems to match your budget and needs.
Perfect Pairing with DEYE and Victron Inverters
When paired with advanced inverters like the DEYE Hybrid LV SUN-5K-SG04LP1-AU or a Victron AC Coupled System, LV 51.2V batteries integrate seamlessly into your home energy system.
DEYE Hybrid Inverters: Provide robust support for off-grid systems or grid-tied setups with backup functionality.
Victron AC Coupled Systems: Expand your existing solar system without replacing your existing PV inverter, offering flexibility and reduced cost.
Understanding AC Coupling: AC coupling refers to the configuration where both the battery inverter (e.g., MultiPlus-II) and the grid-tied solar inverter are connected on the AC side of the system. In this setup, the solar inverter supplies AC power, which can be used directly by AC loads or converted by the MultiPlus-II to charge the batteries.
2. Frequency Shifting for Power Regulation: The MultiPlus-II utilizes frequency shifting to manage the output of the grid-tied solar inverter, especially during off-grid operation or when battery charging is complete. By slightly increasing the AC frequency, the MultiPlus-II signals the solar inverter to reduce its output, thereby preventing battery overcharging and potential system overloads.
3. Adhering to the Factor 1.0 Rule: It’s crucial to ensure that the maximum power output of the grid-tied solar inverter does not exceed the VA rating of the MultiPlus-II. This “Factor 1.0” rule helps prevent scenarios where sudden load drops could lead to battery overcharging or AC voltage spikes. For instance, a 3,000 VA MultiPlus-II should be paired with a solar inverter whose output does not exceed 3,000 W.
4. Compatibility with Frequency Shifting: Not all solar inverters support frequency shifting. It’s essential to verify that your existing solar inverter can respond appropriately to frequency changes initiated by the MultiPlus-II. Some inverters have settings or modes (often referred to as “island mode” or “micro-grid mode”) that enable this functionality. Consult your solar inverter’s documentation or manufacturer to confirm compatibility.
These pairings deliver an adaptable energy solution tailored to Australian households, whether you’re starting fresh or enhancing an existing solar system.
On-Grid or Off-Grid: Versatility for Every Home
Off-Grid Applications:
Reliable Power Supply: Ideal for rural properties or areas with limited grid access, providing consistent electricity.
Energy Storage: Store excess solar energy for use during nighttime or cloudy days, ensuring uninterrupted power availability.
Petrol or Diesel Generators can offer a backup in the rare weather events such as long periods of overcast or cloudy weather.
On-Grid Solutions:
Cost Reduction: Lower electricity bills by maximizing solar self-consumption, reducing reliance on grid electricity.
Backup Power: Ensure seamless operation during grid outages, keeping your household running smoothly.
Energy Storage for Peak Times: Store generated solar energy for use during evening peak rate periods, optimizing energy usage and savings.
Virtual Power Plants (VPPs):
Participating in a VPP allows you to leverage your battery storage to generate income by exporting stored energy to the grid during high-demand periods.
Some customers have already started to join the Amber/Evergen as mentioned here (this is a new integration, and therefor now its complete, people can enjoy control over there systems like never before) we think of this as the open source version of Solar and Battery storage. The more people who join, the better it is for all of us together)
Why Australians Are Switching to Low Voltage (LV) LiFePO4 Batteries
With rising energy costs and frequent grid instability, more Australians are turning to renewable energy solutions. LV 51.2V batteries ensure you can harness and store solar power efficiently while reducing your carbon footprint.
Your Trusted Partner in Energy Storage
At LiFePo4 Australia, we specialize in providing high-quality 51.2V LiFePO4 batteries tailored for Australian conditions. Whether you’re looking to power your home sustainably or achieve complete energy independence, our team is here to guide you every step of the way.
Ready to Upgrade Your Energy System?
Take control of your energy future with LV 51.2V LiFePO4 batteries. Contact us today to learn more or explore our range of battery and inverter solutions for Australian households.
In today’s rapidly expanding energy storage market, Battery Management Systems (BMS) play a critical role in the health, safety, and performance of lithium batteries. Whether you are building a battery for a solar setup, electric vehicle (EV), or DIY energy storage system, choosing the right BMS is essential for managing battery performance, extending lifespan, and protecting against potential hazards.
This guide will delve into some of the most popular and well-regarded BMS options available in the market, including JBD, JK, and Daly, analyzing their features, reliability, and overall performance. We’ll also highlight the pros and cons of each system to help you make an informed decision based on your specific requirements.
What is a Battery Management System (BMS)?
A BMS is an electronic system that manages a rechargeable battery, such as lithium-ion or lithium iron phosphate (LiFePO4), by controlling key functions like charging, discharging, temperature, and overall safety. The BMS ensures that the battery operates within safe limits and helps prolong its lifespan by balancing the cells and protecting against issues like overvoltage, undervoltage, and overheating.
Popular BMS Brands Overview
The BMS market is vast, with many different manufacturers offering various models ranging from budget-friendly basic protection systems to advanced smart BMS options with sophisticated features like Bluetooth connectivity and active balancing. Let’s explore some of the most popular brands:
1. JBD BMS (Jiabaida BMS)
Overview: JBD is a popular choice among DIY battery builders and professionals alike. Known for its reliability and affordability, JBD offers a wide range of BMS products suitable for everything from small battery packs to large energy storage systems. It also features smart BMS options with Bluetooth, providing real-time monitoring and control through mobile apps.
Support for Victron, DEYE, Growatt and many other inverters.
An image of tTpopular JBD 200 amp 4s 12v BMS for LFP and Lithium BatteriesJBD-6s-22s-250A-2JBD ESS Smart BMS 16s 48V 200A LiFePO4JBD 300AMP BMS 24-48v
Key Features:
Available in 12.8V to 48V(51.2V) configurations, with various amp ratings.
Both Smart BMS with Bluetooth connectivity for monitoring battery status via an app and Regular BMS, set and forget!
Robust passive and active balancing models to keep cell voltages even.
Comprehensive protection against overcharge, over-discharge, and over-temperature.
Configurable parameters via PC software or mobile app.
Pros:
Cost-effective with very reliable performance.
Smart features like Bluetooth monitoring and mobile app control.
Flexible configuration options. Excellent Accuracy for SOC calculations
Available in high current ratings, suitable for large packs.
Regular firmware updates improve functionality.
Cons:
Slightly more complex to set up compared to simpler BMS units.
Bluetooth connection range can be limited.
Lack of detailed user manual support for first-time users.
Best For: JBD BMS is well-suited for both DIY enthusiasts and professional battery builders who need reliable, affordable BMS with smart monitoring features. Ideal for medium to large battery packs in solar, RV, and EV applications.
2. JK BMS (JiKong BMS)
Overview: JK BMS is one of the most advanced BMS systems on the market, especially popular among energy storage professionals. It is known for its robust features, including active balancing, high customization options, and detailed data monitoring. JK BMS is highly regarded for its accuracy, durability, and flexibility, making it ideal for large-scale and critical battery systems. Support for Victron, DEYE, Growatt and many other inverters.
JK BMS Inverter 200AJK-BMS_touchscreenB2A20S20P 200A Smart BMS JK
Key Features:
Active balancing (dynamic cell balancing) ensures cells are equalized during operation.
Bluetooth connectivity for real-time monitoring via a mobile app.
Configurable protection parameters for precise control over charging and discharging.
Software is good, but not perfect, and support has been poor in 2024 for the new model
Pros:
Excellent active balancing capabilities reduce cell degradation and extend lifespan.
Detailed monitoring and data logging for precise control.
Widely customizable for different applications off-grid systems, and commercial setups.
Rugged design with high current and voltage tolerance.
Good accuracy for professional energy storage projects.
Cons:
More expensive than basic BMS units.
Higher learning curve for those new to BMS systems.
Requires more time to set up and configure.
Quality of materials may be lower, than JBD
Software has been buggy.
Best For: JK BMS is the go-to choice for large-scale, critical energy storage applications where active balancing and precise control are necessary. It is ideal for professional setups, commercial energy storage, and high-performance EVs.
3. Daly BMS
Overview: Daly BMS is another popular option, especially in the DIY space, due to its affordability and basic functionality. Daly BMS is often used for simple battery systems that don’t require the advanced features seen in more expensive systems like JK or JBD. It offers basic protection for lithium batteries, making it suitable for small energy storage systems or low-demand applications.
Daly-4s-12v-SmartBMS 250A 300A 400A 500A
Key Features:
Basic protection: overvoltage, undervoltage, over-temperature, and short circuit protection.
Available in 12V to 48V configurations with various amp ratings.
Passive balancing for maintaining cell voltage consistency.
Compact design, easy to install, and cost-effective.
Pros:
Easy to buy
Simple to set up and use.
Basic cell balancing and protection features are sufficient for smaller setups.
Widely available with many options for different voltage and current requirements.
Cons:
Passive balancing is less efficient than active balancing.
Less suitable for large or high-performance battery systems.
Durability concerns for long-term use in critical applications.
Active Cooling is unreliable
Best For: Daly BMS is ideal for small-scale projects, DIY enthusiasts, and applications where basic protection is sufficient, such as small solar setups, electric bikes, or RVs. However, it may not be the best choice for large or critical energy storage projects.
4. PACE BMS
PACE BMS is designed to offer precise control and management over battery packs, particularly in scenarios where safety, durability, and advanced functionality are critical. It competes with other high-end BMS solutions like JK and REC, offering features that cater to both small and large battery systems. The focus is often on high voltage and high current capabilities, active balancing, and detailed monitoring.
PACE BMS is trusted in many server rack batteries, and is very similar to many other professional grade UPS and ESS storage BMS, with communication with Inverters and other parallel batteries one of the strengths of this product. Support for Victron, DEYE, Growatt and many other inverters.
BMS 300A 16S – PACEEX 51.2v
Key Features of PACE BMS:
Passive Balancing: Ensures cells within the battery pack remain balanced, improving the pack’s longevity and performance.
High Voltage and Current Support: PACE BMS is designed to handle larger battery packs, making it suitable for industrial energy storage systems and EVs.
Smart Monitoring: Bluetooth connectivity, Wi-Fi integration, and real-time monitoring through mobile apps and dedicated displays.
Scalability: PACE BMS supports a wide range of voltages and capacities, making it versatile for projects of various sizes.
CAN Communication: Allows integration into more complex systems and communication with other components, such as in electric vehicles or sophisticated solar setups.
Configurable Protection Settings: Advanced protection for overvoltage, undervoltage, over-temperature, and current surges, with configurable thresholds.
Pros of PACE BMS:
Advanced Features: PACE BMS offers high-end features like balancing, real-time monitoring, and CAN communication, making it suitable for professional or industrial-grade systems.
High Reliability: It is built with a focus on safety and durability, ensuring optimal performance even under demanding conditions.
Great Scalability: Suitable for both small and large battery packs, offering flexibility across different applications.
Detailed Monitoring: Real-time feedback on battery health and performance ensures better maintenance and control.
Cons of PACE BMS:
Higher Cost: PACE BMS tends to be on the more expensive side compared to options like Daly or JBD, which may not make it ideal for DIY enthusiasts or small-scale projects.
Complexity: Due to its advanced features and configuration options, PACE BMS has a steeper learning curve and may require technical knowledge to set up and manage effectively.
Overkill for Simple Systems: For small or low-demand projects, PACE BMS may offer more features than necessary, which could result in unnecessary costs.
Best For:
PACE BMS is ideal for large, complex energy storage systems, electric vehicles, or any application that demands high reliability, precision, and detailed monitoring. Its advanced features and robust safety mechanisms make it a top choice for critical systems where performance and safety are paramount.
5. Other Popular BMS Options
Overkill Solar BMS: Specifically designed for DIY solar energy storage systems, Overkill Solar BMS is known for its user-friendly interface and detailed monitoring features. It offers Bluetooth connectivity and a built-in display for real-time stats, making it a favorite among home solar system installers. Overkill uses modified versions of the JDB BMS, in some cases the same BMS.
REC BMS: One of the high-end options, REC BMS, is designed for advanced applications requiring detailed control, real-time data, and integration into large, complex systems. It supports both passive and active balancing and is highly customizable, often used in commercial energy storage projects.
Lacks advanced features like active balancing, not DIY friendly
Commercial scale solar setups, low-voltage energy storage systems
REC
Active balancing, high customization, detailed monitoring
Highly customizable, integrates into large systems, active balancing
Very expensive, complicated setup overly complex
Large commercial projects, grid-connected systems, high-end EV setups
Final Thoughts: Which BMS is Right for You?
When it comes to selecting a BMS, the right choice depends on your specific project requirements. Here’s a quick summary to help guide your decision:
For DIY enthusiasts or small battery systems: JBD offers the most budget-friendly option with basic protection features. It’s ideal for simple projects like e-bikes or small solar setups.
For advanced DIY and professional setups: JBD and JK BMS is a great middle-ground option, providing smart features like Bluetooth monitoring, good balancing, and flexibility in configuration. It’s a solid choice for medium to large battery packs.
For large-scale or critical energy storage systems: PACE BMS is the gold standard, offering active balancing, high current handling, and extensive monitoring capabilities. It’s perfect for large energy storage projects, EVs, and commercial applications where reliability and performance are paramount.
Ultimately, the best BMS for your needs will depend on the complexity and scale of your project, as well as your budget. Each BMS option has its strengths, and understanding your specific requirements will help you choose the most suitable one for your system.
Ready to Take Your Energy Storage to the Next Level?
At LiFePO4 Australia, we specialize in helping you choose the best components for your battery systems. Whether you’re looking for a high-end BMS or just starting out with a basic battery pack, we’ve got you covered with expert advice and top-tier products. Contact us today to learn more about our range of BMS options and how we can help you build the perfect battery system!
AS/NZS 5139-2019 Compliance Guide for a 15kWh, 51.2V, 300Ah Lithium Battery with LiFePO4 Cells
All of our LiFePro Batteries are designed to comply with IEC62619 for installation to AS/NZS3001.2:2022 standard. Our Lithium batteries are designed to comply to IEC62619 and therefore can usually be installed in most applications. We are currently working on the application and certificate of IEC62619 for a number of our batteries. You can reach out to find out more by calling us on (07) 4191 6815
Compliance vs. Certification
Compliance:
When a battery complies with IEC 62619, it means that the battery has been designed and manufactured to meet the requirements and criteria set out in the IEC 62619 standard.
This compliance could be based on internal testing and assessments conducted by the manufacturer to ensure that the battery meets the necessary safety and performance specifications outlined in the standard.
Certification:
Certification, on the other hand, involves a formal process where an accredited third-party testing organization tests and verifies that the battery meets the IEC 62619 standard.
This process includes rigorous testing under controlled conditions and results in an official certificate or mark that indicates the battery has been independently verified to meet the standard.
Certification provides a higher level of assurance and credibility to customers and regulators, as it involves independent validation.
Why Certification Matters
Market Acceptance: Many markets, industries, and customers require certified products to ensure safety and reliability. Certification can be a requirement for selling products in certain regions or for use in specific applications.
Liability and Compliance: Certification can protect against liability and regulatory issues, as it demonstrates that the product has been independently verified to meet recognized safety standards.
Customer Confidence: Certification provides customers with confidence in the quality and safety of the product, which can be a key differentiator in the market.
1. Introduction
AS/NZS 5139:2019 sets the standards for the safe installation of battery energy storage systems (BESS) in Australia and New Zealand. Compliance with this standard ensures the safety and reliability of your lithium battery system. This guide will help you meet these standards for your 15kWh, 51.2V, 300Ah lithium battery containing LiFePO4 cells. To ensure the safety and compliance of your 15kWh, 51.2V, 300Ah lithium battery system, it’s important to adhere to both AS/NZS 5139:2019 and additional regulations specified in AS/NZS 3000:2018
2. System Design
2.1 Battery Specification
Capacity: 15kWh
Voltage: 51.2V
Current: 300Ah
Chemistry: Lithium Iron Phosphate (LiFePO4)
2.2 Key Components
Battery Management System (BMS)
Inverter/Charger
Safety Enclosure
Circuit Protection Devices (Fuses/Breakers)
Cabling and Connectors
3. Installation Site Requirements
3.1 Location
Battery Location & Restrictions:
Install the battery system in a well-ventilated, cool, and dry area.
Avoid direct sunlight and ensure the location is away from flammable materials.
Batteries cannot be installed in restricted locations such as near gas appliances and gas cylinders. Specifically, there are exclusion zones for electrical installations near gas relief vent terminals to prevent ignition hazards (AS/NZS 3000:2018, Section 4.18) (GSES).
Ventilation and Environmental Requirements:
Ensure the installation site provides adequate ventilation to avoid overheating and accumulation of gases. The location should maintain temperatures within the limits specified by the manufacturer and control humidity levels to prevent condensation (Standards.govt.nz) (GSES).
3.2 Access and Clearances
Ensure clearances around the battery system for maintenance and ventilation as specified by the manufacturer.
Allow at least 600mm clearance around the battery enclosure.
3.3 Environmental Conditions
Install the system within the environmental conditions specified by the manufacturer (e.g., temperature, humidity).
4. Safety Considerations
4.1 Battery Enclosure
Use a non-combustible, weatherproof enclosure with an IP rating appropriate for the installation location (e.g., IP65 for outdoor installations).
The enclosure should have ventilation to prevent the accumulation of gases.
4.2 Fire Safety
Install fire-resistant barriers as required.
Maintain a safe distance from ignition sources.
Ensure the system is equipped with a fire suppression system if required by local regulations.
Fire Safety and Hazard Protection:
Install fire-resistant barriers and maintain safe distances from potential ignition sources. A fire suppression system may be required depending on local regulations (Smart Energy Council)(GSES).
4.3 Emergency Shutdown
Provide an accessible emergency shutdown switch.
Ensure clear labeling and instructions for emergency procedures.
Documentation should include detailed installation, operation, and maintenance instructions, along with clear labeling for emergency shutdown procedures (Standards.govt.nz) (Clean Energy Council).
5. Electrical Installation
5.1 Circuit Protection
Install DC fuses or circuit breakers appropriately rated for your battery system to protect against overcurrent conditions. Proper cable sizing is essential to minimize voltage drop and prevent overheating (Standards.govt.nz) (GSES).
5.2 Cabling
Use cables rated for the maximum current and voltage of the battery system.
Ensure cables are correctly sized to minimize voltage drop and heat generation.
Secure and protect cables against physical damage.
5.3 Earthing and Bonding
Earth the battery system according to AS/NZS 3000:2018.
Ensure all metallic parts are bonded to prevent electrical shock hazards.
5.4 Inverter/Charger Integration
Connect the battery system to the inverter/charger according to the manufacturer’s instructions.
Ensure the inverter/charger is compatible with the battery’s voltage and current specifications.
6. Battery Management System (BMS)
6.1 Functions
Overcharge/Over-discharge Protection: The BMS monitors the state of charge and prevents the batteries from being overcharged or excessively discharged, which can damage the cells and reduce their lifespan.
Temperature Monitoring and Control: The BMS tracks the temperature of the cells and the environment to prevent overheating. It can shut down the system or reduce the charge/discharge rates if temperatures exceed safe levels.
Cell Balancing: The BMS ensures that all cells in the battery pack are charged equally, preventing any single cell from becoming a weak link and reducing the overall capacity and lifespan of the battery.
Communication: The BMS communicates with external systems like the inverter/charger to provide status updates, alerts, and control signals.
Sound Alarm: The BMS must be equipped with an audible alarm to alert users in case of critical issues such as overcharge, over-discharge, overheating, or any other condition that might lead to a hazardous situation. This is part of ensuring that the system can provide immediate alerts to prevent accidents and enable timely intervention.
6.2 Installation
Manufacturer’s Instructions: Follow the specific installation instructions provided by the BMS manufacturer. This includes wiring, sensor placement, and configuration settings.
Configuration: Set up the BMS to match the parameters of your battery system. This might involve setting voltage thresholds, temperature limits, and other protective settings.
7. Documentation and Labeling
7.1 User Manual
Provide a detailed user manual including installation, operation, and maintenance instructions.
7.2 Labels
Clearly label the battery system with the following information:
Manufacturer name and contact details
Model and serial number
Electrical ratings (voltage, current, capacity)
Safety warnings and emergency shutdown instructions
8. Testing and Commissioning
8. Testing and Commissioning
8.1 Pre-Installation Testing
Component Testing: Before installing, test each component (battery cells, BMS, inverter/charger, etc.) to ensure they are functioning correctly. This includes checking for proper voltage, current, and any manufacturer-specific tests.
8.2 Post-Installation Testing
Inspection: After installation, perform a thorough inspection to ensure all components are correctly installed, all connections are secure, and there are no signs of damage.
Continuity and Insulation Tests: These tests check that the electrical connections are correct and that there are no unintended paths for current that could cause short circuits.
Functional Tests: Verify that the BMS and protective devices (fuses/breakers) operate correctly. Simulate fault conditions to ensure they respond appropriately.
Inverter/Charger Operation: Check that the inverter/charger correctly charges and discharges the battery and that it communicates effectively with the BMS.
9. Maintenance and Monitoring
9.1 Regular Inspections
Conduct regular inspections to ensure the system remains in good condition.
Check for signs of wear, corrosion, or damage.
9.2 Monitoring
Use monitoring systems to keep track of battery performance and health.
Regularly check BMS data for any anomalies or alerts.
10. Compliance and Certification
10.1 Certification
Obtain certification from a qualified electrical inspector to ensure the installation complies with AS/NZS 5139:2019.
10.2 Documentation
Keep records of all installation, testing, and maintenance activities.
Ensure all documentation is available for inspection by regulatory authorities.
In the past couple of years some very significant news has been annouced by CATL, this technology has since also made its way to a number of other LFP manufacturers in China. Such as EVE and Hithium
We are looking at very high cycle life LFP battery cells and the underlying technologies that are being implemented to enable such numbers. It should be noted that these numbers are theoretical, and you should not expect anything close to these in real world applications. Calendar Life ageing plays a significant role in the lifespan of any lithium based battery.
CATL, a leading battery manufacturer, has announced a breakthrough with their new Lithium Iron Phosphate (LFP) battery cell, boasting an impressive cycle life of 18,000 cycles. This achievement is a result of several advanced technologies and innovative approaches in battery chemistry and manufacturing processes.
Key Technologies Implemented:
Fully Nano-Crystallized LFP Cathode Material: CATL has pioneered a fully nano-crystallized LFP cathode material based on hard carbon, not graphene, forming a highly efficient super-conductive pathyway. This sophisticated nanostructure promotes the swift extraction and movement of lithium ions, The stability and performance of the cathode are substantially improved, contributing to the extended cycle life and reliability of the battery.
Granular Gradation Technology: This technology involves placing every nanometer particle in the optimal position within the cathode. By precisely positioning these particles, CATL has significantly improved the energy density and durability of the battery. This meticulous structuring at the nanoscale level minimizes degradation and ensures uniform performance over many cycles
3D Honeycomb-Shaped Anode Material: The use of a 3D honeycomb-shaped material in the anode helps to increase energy density while effectively controlling the volume expansion during charge and discharge cycles. This design innovation not only boosts the battery’s capacity but also enhances its structural integrity, contributing to its extended lifespan
Advanced Separator Technology: The new LFP battery incorporates an ultra-thin, high-safety separator that improves ion transport while maintaining structural stability. This separator technology is crucial for achieving high charging speeds and ensuring safety during operation, which are critical factors for the long-term durability of the battery
Cell-to-Pack (CTP) Technology: CATL’s CTP technology eliminates the need for traditional modules, increasing the packing efficiency by about 7%. This optimization allows more active material to be packed into the battery, enhancing its overall performance and extending its cycle life. The CTP approach also simplifies the manufacturing process and reduces costs
Superconducting Electrolyte Formulation: The new battery employs a superconducting electrolyte formulation that enhances ion conductivity. This innovation ensures that the battery can charge and discharge at higher rates without compromising its longevity. It also contributes to the battery’s ability to maintain performance in extreme temperatures
Explanation and Implications of Advanced LFP Battery Technologies
Granular Gradation Technology
Granular Gradation Technology involves the meticulous positioning of nanoparticles within the cathode material of a battery. By placing each particle in an optimal position, the technology significantly improves the energy density and durability of the battery. This precise arrangement minimizes degradation and ensures uniform performance over many cycles. This is achieved through advanced nanotechnology techniques, which allow for the controlled deposition and organization of particles at the atomic or molecular level. The structured material resulting from this technology facilitates efficient ion transport, thereby enhancing the battery’s overall performance and lifespan.
Atomic Layer Deposition (ALD) in Battery Manufacturing
Atomic Layer Deposition (ALD) is a technique used to apply ultrathin films to various components of a battery, such as electrodes and separators. ALD works by depositing materials one atomic layer at a time through a series of self-limiting chemical reactions. This process allows for precise control over film thickness and composition, which is crucial for enhancing battery performance. For example, ALD can be used to coat lithium iron phosphate (LiFePO4) electrodes with materials like aluminum oxide (Al2O3), which can improve the electrode’s stability, reduce degradation, and enhance the battery’s cycle life. Further Research by Video source】【source】【source】. Further Research from 2020 here
Impact of Mass Production and Economies of Scale:
The implementation of these advanced technologies in mass production is expected to drive down the cost per kilowatt-hour (kWh) of LFP batteries. CATL’s extensive production capacity and economies of scale are instrumental in making these high-performance batteries more affordable and accessible for various applications, including electric vehicles and energy storage systems
Conclusion:
CATL’s 18,000 cycle life LFP battery represents a significant advancement in battery technology, driven by innovations in nano-crystallized cathode materials, granular gradation, and advanced manufacturing techniques. These technologies not only enhance the battery’s performance and safety but also contribute to its long-term durability, making it a game-changer in the field of energy storage
For more detailed information on CATL’s technological advancements and their impact on the battery industry, you can visit the original articles on Electrek and PV Magazine.
Chinese lithium battery manufacturers, including CATL, are indeed utilizing advanced technologies like Atomic Layer Deposition (ALD) to enhance the performance and longevity of their batteries. ALD is employed to apply ultra-thin, uniform coatings on battery components, such as electrodes and separators. This technique improves the stability and efficiency of the batteries, particularly under high-stress conditions such as high voltages and temperatures.
Key Technologies Used:
Atomic Layer Deposition (ALD):
ALD allows for the precise application of thin films on battery materials, improving their structural integrity and performance. It helps in forming protective layers on cathodes and anodes, reducing degradation and enhancing cycle life. For example, ALD-coated LiFePO4 electrodes exhibit significantly improved cycle stability and energy density (RSC Publishing) (SpringerLink).
Granular Gradation Technology:
This technology involves the meticulous arrangement of nanoparticles within the cathode material. By placing each particle in an optimal position, the energy density and durability of the battery are significantly enhanced. This structured arrangement minimizes degradation and ensures consistent performance over many cycles (RSC Publishing).
Nanotechnology and Carbon Nanotubes:
The integration of long, thin carbon nanotubes creates highly efficient pathways for ion transmission, enhancing the battery’s fast-charging capabilities. This, combined with additives to improve film permeability, facilitates easier lithium ion movement between electrodes, thereby improving overall battery performance (Leading Edge Materials Corp).
These innovations are part of the broader trend in the battery industry to improve energy storage solutions through cutting-edge material science and nanotechnology. Chinese manufacturers, particularly CATL, are at the forefront of implementing these technologies to produce high-performance, durable batteries suitable for a wide range of applications, from electric vehicles to large-scale energy storage systems.
In the first few seconds of this video made in 2018 at one of EVE’s battery factories, you will notice the winding of a prismatic cell.
Final Words – Batteries aren’t all the same!
This video made in 2023, shows the EVE factory, with some of its most advanced manufacturing equipment in full operation. We are see in the space of just 4 or 5 years, the speed and yield has increased dramatically. The combination of many technologies has increased the lifespan of a LFP cell. We currently recommend the use of the MB30 and MB31 cells for 300+ah cells. They are the most advanced cells for Energy Storage made by EVE. EVE makes more than 50 cells that I am aware of, probably more than 100 if you include some of the lesser known cell types and variants.
One of the best videos we have ever seen to explain what is really happening in the newest generation of LFP cells is this one made by CATL in 2024.
https://youtu.be/0cyz5vXd-xY – It was made private by CATL recently on their YOUTUBE channel. We found a copy of the video in the wayback machine. And though its low resolution, Its still good enough to see the tech in laymans terms.
Q. What is a Barcode? A. A visual representation of data
Q. Can a barcode be scanned to verify authenticity of unique products? A. NO! A QR code does NOT authenticate product genuineness because it can be easily copied or duplicated by anyone.
Put Simply, if I have some text or numbers, I can quickly and easily generate a QR code. It is static data. It does not connect to EVE or any other manufacturer.
Q. Why I keep writing these articles over and over?
Part 1
I am observing that most sellers in Australia (Melbourne, Sydney, Rockhampton, Perth, and Brisbane) sell B grade cells as A grade. They either don’t care, or they don’t know themselves. It’s really disappointing.
I have to defend our own business sometimes, yet those same people attacking me are under the impression that the other sellers are selling genuine products, but I KNOW they aren’t.
a) I know because I have seen their cells in person, and I have seen the packaging. I can see they are buying from QSO, Basen, Docan, or EEL by the boxes, the stickers, the busbars, and the QR CODE! b) I have spoken to most of the sellers personally. c) I have seen the evidence over and over again.
Part 2
I have always known what a barcode and therefore a QR code is. I have personally worked in stock control systems since I was a teenager and in IT for years. I sold and supported stock control systems. We work with barcodes all day, and we know what a keyboard wedge is. (I know that 99.8% of people do not.)
Part 3
I only recently realized that most (not all) people do not understand what they are or how they work.
I’ve watched multiple people scan the code, thinking they were connecting to an authenticity server or something. Recently, I actually watched a guy scan his “known fake” jacket, which had a QR code on it, and I finally realized that people just don’t understand this technology in general.
Let me say this in BOLD red text!
QR CODES DO NOT AND CAN NOT VERIFY AUTHENTICITY
QR Codes for DUMMIES
Below this paragraph I have given you a QR code generator. You can make it do whatever you want within a set number or characters. It can create any data, like
If I have a spreadsheet with genuine QR codes, I can then generate a QR Code. If someone gets a hold of a spreadsheet like this one, attatched here. EVE uses a 24 character “string” of numbers and letters as their identifier. Click it to download the spreadsheet of real QR codes, from a real EVE spreadsheet
Use this tool in orange, to create your own EVE barcodes using the Spreadsheet.
In Depth detail of QR codes
The amount of text a QR code can hold depends on the version and error correction level. Here’s a general idea:
A standard QR code (Version 40, the largest version) can hold up to:
7,089 numeric characters
4,296 alphanumeric characters
2,953 binary (8-bit) bytes
However, practical QR codes used in everyday situations usually hold much less data to ensure they are easily scannable. For best results, it’s advisable to keep the text short, typically under 300 characters, to maintain quick and reliable scanning.
Summary
EVE and others like them use QR codes for internal tracking while manufacturing battery cells. They are not there for the end user, to verify the authenticity.
QR Code created with a QR Generator by LiFePo4 Australia
THIS QR will have the string of data “https://www.lifepo4.com.au” You can scan this with a camera app, or a QR Code scanner and it will take you to this website, it won’t work with the LIFEPO4 QR Scanner, because that app has been modified to interpret batteries only.
If you have the spreadsheet with genuine QR codes, You can then generate a QR Codes and upload them to the Laser Engraver, and every 5 seconds you can laser engrave a new QR code onto a B grade cell, making it appear as a genuine A grade product, that even matches the spreadsheet you are look at.
Stop thinking chinese people are not educated, the truth is that many chinese, over 100 Million of them hold college degrees, they are smarter that you, almost certainly. And it only takes a few to tell the others what to do. Just like an egineer would do in Australia to his subordinates. As of recent data, approximately 18.3% of Chinese people hold higher education degrees. That means, that there are more educated people in china, than the entire population of USA and Australia combined. It also means that there are at least 10-20 educated chinese people for every one of us. Make your own judgement.
How to use a spreadsheet to generate and print new QR codes with a Laser
If someone (think shady chinese battery mafia figure) gets a hold of a spreadsheet like this one, attatched here. They can then upload the data onto the Laser Machine, then one by one, they will write over the top of the Invalid or B Grade QR Code. Thus making a Battery cell with 280ah appear to be a 330ah cell.
It is really simple, the entire process takes a few seconds at most per cell. I have seen a video of this being done, I did not have the ability to save that video, and I can not seem to find it no matter how hard I google, and Baidu it. The videos are private for obvious reasons. But they do exist.
The Process of QR code Re-Lasering
Q How does QR replacement take place, and who is doing it?
A. In china, there are vast warehouses full of products that did not meet specifcations for use in commercial or high voltage battery pack use. They are still batteries, and they work, but for how long I hear you ask?
“how long is a piece of string”
High Voltage Module and A grade Pack disassembled
QR CODES DO NOT AND CAN NOT VERIFY AUTHENTICITY
Summary A QR code is like a sticker. Anyone can print the same sticker and put it on anything, so it doesn’t prove the product is real. Only trusted sellers, like us, can guarantee the product’s genuineness.
How to decode the data from EVE LFP Batteries
This is the EVE format of a QR code
Why a Lifepo4 QR Scanner app does NOT verify the Authenticity or Genuineness of Batteries
As we have discussed, a QR code is STATIC, 1. It does not connect to a database and return anything that can be used to know if the product is real or fake.
The Lifepo4 QR Scanner App, has a database, (think of it as a big spreadsheet. The database contains all the cell models, and some logical programming for the app to be able to decode all known QR codes. The user who created this app, did this to assist the community to try to know what product of battery cells, and where they were made and what capacity they were. He has been able to gather enough data to make it work for the most popular manufacturers.
Once he has this image and others like it from the other manufacturers, he can very easily decode the important data, and that will return you a result on what that QR is supposed to be attached or printed on. (notice I said supposed)
Why Does all this even matter?
In a high voltage battery pack, it’s crucial that the batteries in series are matched and high quality because:
Balanced Performance: Matched batteries ensure consistent performance, as each battery will charge and discharge at the same rate.
Safety: High-quality batteries reduce the risk of failures, such as overheating, leaks, or explosions.
Longevity: Using matched and high-quality batteries extends the overall lifespan of the pack by preventing weak batteries from causing the entire pack to degrade faster.
Efficiency: Ensures that the battery pack operates at optimal efficiency, providing reliable power output without losses due to imbalance.
By ensuring batteries are matched and high-quality, you maintain the safety, efficiency, and durability of the high voltage pack.
But wait there is more!
If a single battery cell in a high voltage pack is faulty, it impacts the entire pack because:
Chain Reaction: In a series configuration, the current flows through each cell in the chain. A faulty cell disrupts this flow, reducing the pack’s overall performance.
Reduced Capacity: The faulty cell limits the pack’s capacity to the weakest cell, causing the whole pack to discharge faster and reducing its overall capacity.
Safety Risks: A single faulty cell can overheat or fail, potentially causing damage to adjacent cells and posing safety hazards like fires or explosions.
Increased Wear: The healthy cells are forced to compensate for the faulty one, leading to uneven wear and shortening the lifespan of the entire pack.
In summary, a single faulty cell can degrade the performance, capacity, and safety of the whole pack, highlighting the importance of ensuring all cells are high quality and well-matched.
Now the best way to explain this. using math
if you have 16 cells in series, all of which are 330ah, though a single cell has only 150ah of capacity, then the entire pack will loose55% of its capacity.
In this example the single cell, limits the pack to a total of 16 x 150ah. Making your pack only 7.6Kwh, when it should be 16.8kwh.
In dollars in todays market, this would mean,
A $5000 investment would loose $2750 in value.
Making your battery worth only $2250
Not only this but the cell will continue to cause problems, causing your power to cut off regularly, and remain out of balance, and it will strain every other component in your pack.
Not only this but the cell will continue to cause problems, causing your power to cut off regularly, and remain out of balance, and it will strain every other component in your pack.
Notice these are 2023-2024 cells, V3 LF280K or MB31
The process of purchasing from China lithium battery cells, particularly for do-it-yourself (DIY) projects, is fraught with complexities and pitfalls, largely stemming from issues of quality and shipping. As a specialist in the field with extensive experience, I aim to experienced on these challenges, providing insights that stem from my personal journey in navigating this treacherous terrain.
The Allure and Risks of Using Alibaba
Many importers continue to be drawn to platforms like Alibaba due to apparent cost savings and convenience. However, a significant risk lurks beneath the surface: approximately 90% of importers end up with subpar, or “B grade,” cells. This pervasive issue is largely attributable to the shipping practices and the inability to visually distinguish between A and B grade cells.
Why Most Cells Are B Grade
The core of the problem lies in the shipping practices employed by many Alibaba vendors. These sellers often resort to “black market shipping,” where containers filled with dangerous goods (like lithium batteries) are not properly declared. This involves using what is known in Chinese as “special line” shipping, which typically involves bribes to customs officials in both China and Australia.
This unorthodox approach allows sellers to dramatically reduce shipping costs—sometimes by half compared to reputable companies like EVE Energy, which adhere strictly to international shipping regulations for dangerous goods. EVE Energy, being a billion-dollar enterprise, cannot risk the legal and ethical implications of concealing dangerous goods in regular shipments.
The Difference Between A and B Grade Cells
From a technical perspective, A and B grade cells may appear identical, but their performance and reliability diverge significantly. EVE Energy, for instance, implements rigorous testing procedures during their 3-4 week manufacturing process. This includes specialized charging processes, capacity checks, and voltage tests, which classify cells into categories like A+, A, B, and B- grades. Up to 40% of cells are downgraded to a lower grade due to identified defects during these tests.
Our Approach: Ensuring Quality and Compliance
Given the complexities of legally and safely importing lithium cells, I have taken the route of organizing my own shipping and securing necessary certifications for transporting dangerous goods. This approach, while time-consuming and complex, ensures that I provide only A+ grade cells, unlike the prevalent B grade cells that flood the Australian market through less scrupulous importers.
The Misrepresentation by Alibaba Sellers
A common tactic among Alibaba sellers is falsely representing B grade cells as A+ grade. This misrepresentation is facilitated by the structure of the supply chain, where cells are warehoused en masse and drop-shipped by vendors who often operate merely as call centers. The consequence is a market flooded with inferior cells sold under the guise of top-tier quality.
Conclusion: Navigating the Lithium Cell Landscape
The challenges of purchasing lithium battery cells from China revolve around navigating through a murky landscape riddled with deceptive practices and regulatory challenges. My expertise and commitment to quality and safety have allowed me to overcome these barriers, ensuring that I can provide genuinely high-grade lithium cells.
This situation underscores the importance of rigorous due diligence and understanding the intricate dynamics of international shipping and quality control. By sharing my experience, I aim to enlighten potential buyers and DIY enthusiasts on the pitfalls of the market and the critical importance of sourcing from reliable and ethical suppliers.
In simpler terms, buying lithium battery cells from China can be tricky. Many buyers (importers) get tempted by lower prices on platforms like Alibaba, but often end up with lower-quality, “B grade” cells due to shady shipping practices where sellers don’t declare dangerous goods properly to cut costs. This is risky and against the law.
On the other hand, reputable companies like EVE Energy follow strict shipping rules, which makes their cells more expensive but ensures they are of high quality. I’ve gone the extra mile to organize my own shipping and make sure everything is above board, which means I only provide top-quality, “A+ grade” cells.
To put it plainly, if you’re looking to buy lithium cells, it’s crucial to understand that the cheapest option might end up costing you more in the long run due to poor quality. It’s better to pay a bit more for cells that are safely and legally shipped, ensuring you get what you pay for—reliable and effective batteries.
To clearly highlight our approach: we manage our own shipping and customs processes entirely within legal frameworks. This commitment to legality and ethical practices sets us apart from many sellers around the world who often resort to shortcuts like purchasing from Alibaba to save on shipping costs.
By purchasing in bulk and overseeing every step from customs clearance to delivery, we ensure that we provide only A+ grade cells. This direct involvement allows us to maintain high standards of quality and safety, unlike many other sellers who compromise on these aspects to reduce expenses. This unique approach ensures that our customers receive the best possible product without the common risks associated with improperly handled imports.
Probably the best information we can give you is to outline the actual practices
EVE might sell a battery for $68-78 USD A+ grade Shipping might be $500-800 AUD for 16 cells (Its always more expensive because its legal shipping)
Alibaba sellers buy B grade cells from anywhere between 50-75% of the A+ grade price. This means $34-56 USD
The Alibaba seller will then quote you $63-$78 for that same cell But not only that there shipping quote to you might be $300-600.
The price is not that important, BUT! they are also making profits on the shipping because its not DG shipping. Its illegal.
They do not declare the Batteries as DG in Australia either, so they pay $100’s of dollars less for this shipping pathway.
This is all profit. The process has been improved over a few years. So its now down to only a couple of shipping companies who handle all of the deliveries in Australia
In many cases, they do not pay GST either or only a tiny fraction of what should be paid. This is our money, our countries money, that is supposed to go back into, schools and hospitals and such for the benefit of our country. No in the pockets of overseas companies who are also selling bad cells to us.
The total price is always lower through Alibaba sellers. The Alibaba seller makes $20-35 USD more per cell. This means they can put signinificant effort into replacing a QR code with valid data.
The Laser etching technique which is used to replace a QR code, machine is a very cheap investement when we are talking about replacing the QR code of thousands of cells a day. The investement into this machinery and process is now extremely profitable.
The cells are purhased in lots of thousand and hundreds of thousands. They are transported to a warehouse/ processing centre. where they are graded again and then relabelled with a new QR code. The QR code is from genuine A+ grade cells. A QR code is just letters and numbers. So this data is taken from a genuine batch of A+ grade cells. The spreadsheets from EVE A+ grade cells are used to create what appears to be A+ grade cells. This process costs about $1.50 USD per cell.
Comparing the EVE LF304 to the LF280, LF280K, and LF280k v3, MB30, MB31 we can analyze the key differences and similarities among these popular Lifepo4 cells.
You can also find out why the next generation of MB (Mr Big) cells is better than the last, mostly due to the new stacking technique being employed by just a small number of LFP manufacturers. At this stage CATL, EVE have next generation cells, not yet freely available. But in the near future, you will be able to purchase these cells if you don’t buy them from the grey markets.
EVE LF304
LF304 EVE
The EVE LF304 has a cycle life of 4000 at 0.5C/0.5C. Giving it an estimated lifespan of up to 11 years. The EVE LF304 is EVE’s high power cell, with thicker coatings,
Capacity: 304Ah Nominal Voltage: 3.2V
LIFEPO4 AUSTRALIA OPINION Cycle Life @ 1C : 2000 Cycles Cycle Life @ 0.5C : 4000 Cycles
Claimed Cycle Life @ 1C : 4000 Cycles
Production technology – Winding
LF280
The EVE LF280 has a cycle life of 4000 cycles at 0.5C/0.5C. Giving it an estimated lifespan of up to 11 years Capacity: 280Ah Nominal Voltage: 3.2V
LIFEPO4 AUSTRALIA OPINION Cycle Life @ 1C : 2000 Cycles Cycle Life @ 0.5C : 4000 Cycles
Maximum Continuous Discharge 1C Production technology – Winding
LF280K
EVE LF280K
The EVE LF280K has a cycle life of 6000 cycles at 0.5C/0.5C. Giving it an estimated lifespan of up to 16 years Capacity: 280Ah Nominal Voltage: 3.2V
LIFEPO4 AUSTRALIA OPINION Cycle Life @ 1C : 3000 Cycles
Cycle Life @ 0.5C : 6000 Cycles Production technology – Winding
LF280k v3
The EVE LF280K has a cycle life of 6000 cycles (A+ Grade 8000 Cycles) at 0.5C/0.5C. Giving it an estimated lifespan of up to 16 years Capacity: 280Ah Nominal Voltage: 3.2V
LIFEPO4 AUSTRALIA OPINION Cycle Life @ 1C : 4000 Cycles Cycle Life @ 0.5C : 8000 Cycles
The EVE MB30 has a cycle life of 10000 cycles at 0.5C/0.5C. Giving it an estimated lifespan of up to 20-25 years Capacity: 306Ah Expected Real measured capacity when new 320+AH Nominal Voltage: 3.2V
LIFEPO4 AUSTRALIA OPINION @ Thermally controlled environment Cycle Life @ 1C : 5000 Cycles Cycle Life @ 0.5C : 10000 Cycles
The EVE MB31 has a cycle life of 8000 cycles at 0.5C/0.5C. Giving it an estimated lifespan of up to 20-25 years Capacity: 314Ah Expected Real measured capacity when new 330+AH Nominal Voltage: 3.2V Advertised Cycle Life: 8000 Cycles
LIFEPO4 AUSTRALIA OPINION @ Thermally controlled environment Cycle Life @ 1C : 4000 Cycles Cycle Life @ 0.5C : 8000 cycles
Maximum Continuous Discharge 1C Recommended Discharge 0.5C
Production technology – Stacking
Stacking vs Winding
Longer life span The stacked battery cell has more tabs, the shorter the electron transmission distance, and the smaller the resistance, so the internal resistance of the stacked battery cell can be reduced, and the heat generated by the battery cell is small. The winding is prone to deformation, expansion and other problems, which affect the attenuation performance of the battery.
Comparing process of stacking battery vs winding
Stacking
Winding
Energy density
Higher. Higher space utilization.
Lower. There is a C angle, and the larger the capacity, the lower the utilization rate.
Structural stability
Higher. The internal structure is uniform and the reaction rate is relatively low.
Lower. There is a C angle, which leads to uneven rate of internal reaction of charging and discharging.
Fast charging adaptation
Better. The multi-pole plates are connected in parallel, the internal resistance is low, and the charge and discharge of large current can be completed in a short time, and the rate performance of the battery is high.
Poor. During the charge and discharge process, the degradation rate of the active material at the high temperature position is accelerated, and the other positions are rapidly attenuated.
Safety
The risk is low. Stress distribution is more consistent, which keeps the interface flat and more stable.
Lower. Potential problems such as powder shedding, burrs, pole piece expansion, and separator stretching are easy to occur at the bend.
Cycle life
Longer. Low internal resistance, relieve battery heating during fast charging, improve battery chemical system stability and prolong service life.
Shorter. It is easy to deform in the later stage, which in turn affects the cycle life of the battery.
Productivity
Large-capacity batteries are generally low, mainly 6-8PPM.
Higher, generally at 12-13PPM.
Yield
Low, the glitch problem is prominent.
Higher automation, higher yield rate, higher number of pole pieces.
Process maturity
Low, the number of pole pieces is large, and the investment in equipment is large.
Higher, fewer pole pieces, mature equipment and low investment cost.
Summary of new technology
Technologies such as low-expansion anode materials, full tab design, electrode surface treatment, and flexible electrode forming help resolve liquid infiltration challenges for large cells, enabling comprehensive safety protection and high cycle life through heat insulation, diffusion prevention, pressure relief
What to choose for a battery with the longest lifespan.
EVE MB30 Automotive A+ verified cells directly supplied from EVE, not via a third party, not via Alibaba, and not from most resellers and battery pack manufacturers including almost all battery builders in Australia and China, unless they can provide you with a) the official eve delivery report for the cell purchase, and b) evidence that the QR code is genuine and not re-lasered. The B grade to A grade problem is going to be larger with the new models the LF280K v3 which is actually the MB30
A genuine QR code should be shiny behind the data that has been printed.
QR EVE LF304
X
Your amount to pay has been updated
The previous conversion quote has expired. Here is your new quote:
