Lithium Battery-school EV Engineering
Understanding Why Limiting Charging Rates Extends the Lifespan of Lithium Iron Phosphate (LFP) Batteries

Understanding Why Limiting Charging Rates Extends the Lifespan of Lithium Iron Phosphate (LFP) Batteries

As electric vehicle (EV) and energy storage enthusiasts continue exploring the best lithium-ion battery technologies, Lithium Iron Phosphate (LFP) has emerged as one of the most reliable choices. Known for its stability, high safety profile, and impressive cycle life, LFP has become the preferred option for many EV manufacturers, including Tesla, and is widely used in off-grid energy storage solutions. However, while LFP cells excel in durability, there’s a key factor to keep in mind for achieving optimal performance and longevity: limiting the charging rate.

Recent research on the LFP battery cells from a Tesla Model 3 has shed light on the importance of controlled charging. The study revealed that even high-quality LFP batteries experience significant wear and reduced lifespan when charged at rates exceeding 0.5C. By limiting the charging rate to 0.5C or less, these batteries can last significantly longer, providing multiple times the lifespan of those charged at higher rates. This article delves into these findings, explaining why lower charging rates are crucial for extending the life of your LFP batteries.

https://ars.els-cdn.com/content/image/1-s2.0-S001346862301513X-gr1.jpg

Cell shows is a 161.5 Ah prismatic flat wound hardcase cell from a state-of-the-art Tesla Model 3 in 2021-2023+ Chinese made Long Range version. Australian Long range RWD.

What Does “0.5C Charging Rate” Mean?

Before diving into the research findings, let’s clarify what the term “0.5C” means in the context of battery charging. The “C-rate” refers to the rate at which a battery is charged or discharged relative to its capacity. A 1C rate would mean charging a battery at a current that would fully charge it in one hour. A 0.5C rate, in turn, means charging it at half that current, or over two hours. Therefore, for a 100Ah battery, a 0.5C rate would be a 50A current.

The Study’s Findings: Why 0.5C is the Ideal Limit for LFP Batteries

The in-depth study of Tesla’s prismatic LFP battery cells showed that the battery’s performance and lifespan were significantly influenced by charging rates. Here’s a summary of the key findings:

  1. Increased Degradation at Higher C-Rates: The study found that at charging rates higher than 0.5C, lithium plating—a process where lithium ions accumulate unevenly on the anode—was more likely to occur. This plating can result in a range of performance issues, including reduced capacity, increased internal resistance, and even the risk of short circuits.
  2. Extended Lifespan with Lower Rates: When the battery was charged at 0.5C or lower, there was a noticeable reduction in wear and tear, significantly extending the overall lifespan of the cell. For users in the EV and solar storage markets, this insight underscores the value of slower, steady charging cycles. Slower charging reduces strain on the battery’s materials, preventing chemical and mechanical degradation that shortens its life.
  3. Why Lower Charging Rates Matter: Lower rates help avoid lithium plating, which tends to happen when the anode can’t absorb lithium ions quickly enough, leading to uneven distribution and increased risk of failure. By charging at a rate that allows for a uniform distribution of lithium ions, the battery retains its capacity and efficiency for longer.

The Case for Lower Charging Rates in Everyday Applications

For EV owners, energy storage users, and anyone relying on LFP batteries, these findings emphasize the importance of charging at a controlled rate. Charging at 0.5C or less not only maximizes battery lifespan but also enhances long-term energy efficiency. Let’s look at how this plays out in practical scenarios:

  • EV Charging: While some high-end EVs are capable of ultra-fast charging, LFP batteries used in these vehicles often limit charging speeds to avoid accelerated wear. Tesla, for example, carefully controls the charging rates in its vehicles equipped with LFP packs, balancing quick charging with long-term durability. For individual users, this means that opting for slower home-charging setups can actually help extend the life of their vehicle’s battery.
  • Solar and Off-Grid Energy Storage: In solar storage applications, battery health is critical for reliability and long-term cost savings. Charging at rates below 0.5C not only optimizes the lifespan of LFP cells but also ensures consistent performance over years, allowing off-grid users to get the most out of their investment. Since off-grid storage systems are typically designed to cycle batteries daily, maximizing the number of cycles through careful charging can make a significant difference.

How Lower Charging Rates Affect Battery Lifespan

The benefits of lower charging rates are especially apparent when considering the relationship between charging rate and battery cycle life. Studies have shown that LFP batteries can achieve thousands of cycles—up to 10,000 or more—when charged and discharged at a 0.5C rate or lower. In contrast, higher charging rates significantly reduce the number of cycles before the battery’s capacity begins to degrade. For example, charging at a rate of 1C or more can lead to premature aging, resulting in a battery that may last only a few thousand cycles.

A simplified way to look at this is that reducing the charging rate reduces stress on the battery, which keeps it in a healthier state longer. Each charge cycle at a controlled rate is a gentler cycle, allowing the battery materials to hold up over time. This means less frequent replacements, lower maintenance costs, and better long-term performance.

Understanding the Trade-Offs: Speed vs. Longevity

While faster charging can be convenient, especially in situations where quick turnaround is needed, it comes at the cost of lifespan. Here’s a quick comparison of the trade-offs:

Charging Rate
Lifespan Impact
Best Use Cases
>1C
Significantly Reduced
Quick charging needs, emergency situations
0.5C
Optimal Longevity
Routine EV charging, solar energy storage, daily cycling
Maximum Lifespan
Off-grid storage, backup power systems where longevity is prioritized

Conclusion: Extending Your LFP Battery’s Lifespan Through Controlled Charging

For those seeking reliable, long-lasting LFP battery performance, charging at or below 0.5C is essential. Whether for an EV, solar storage system, or other energy solution, following this guideline can dramatically extend the lifespan and overall efficiency of your batteries.

In today’s fast-paced world, it’s tempting to charge everything as quickly as possible, but with LFP batteries, patience truly pays off. Taking a steady approach to charging can mean the difference between a battery that lasts years and one that requires early replacement. By embracing lower charging rates, we can get the most out of these resilient LFP batteries—optimizing performance, reducing environmental impact, and ultimately saving on costs in the long run.

Sources


https://www.sciencedirect.com/science/article/pii/S001346862301513X

https://www.linkedin.com/pulse/battery-disassembly-characterization-power-square-case-lfp-link-sun-cnx4c?trk=public_post_feed-article-content

News Manufacturers
Comprehensive Guide to Battery Management Systems (BMS): Comparing JBD, JK, PACE, Daly, and More

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.

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.

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.

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.

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.


Pros and Cons Comparison Table

BMS Brand
Key Features
Pros
Cons
Best For
JBD
Smart BMS, Bluetooth, balancing, overcharge/over-temp protection
Cost-effective, smart features, reliable performance
Complex setup, low balance currents
DIY and professional setups for solar, EVs, and large battery packs
JK
Active balancing, high current, customizable parameters
High current Active balancing, touchscreen, Bluetooth
Expensive, steep learning curve, software issues
Small-scale energy storage, EVs, commercial energy applications
Daly
Basic protection, passive balancing, over-voltage/under-voltage
Easy to buy, easy to use, basic protection
Lacks advanced features, limited balancing capabilities
Small DIY projects, basic solar setups, electric bikes
PACE
Bluetooth, passive balancing, over-temperature protection
High price, difficult setup, Bluetooth monitoring
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!

News Blog
Large Lithium Battery cell sizes potentially coming in 2025

Based on the report from Intersolar Europe 2024, here are the energy storage cells announced to be coming in the near future.

  1. 300Ah+ Cells:
    • Various manufacturers are focusing on 300Ah+ cells, including capacities like 305Ah, 306Ah, 314Ah, 315Ah, 320Ah, 345Ah, and 350Ah.
    • Prominent manufacturers like EVE Energy, REPT and Hithium displayed 306Ah and 314Ah cells, with many already certified for non-China markets.
  2. 500Ah+ Cells:
    • Most major LFP manufacturers have exhibited large-capacity cells, with capacities ranging from 580Ah-1130ah respectively.
    • These 500Ah+ cells are expected to enter non-China markets by the first half of 2025.
  3. 1100ah Mega Cells – Hithium 1130ah, more to follow
  4. 5 MWh- 7MWh+ Energy Storage Systems (BESS): 20FT Containers
  5. Companies like CATL and BYD are developing 5, 6 and 7 MWh+ energy storage containers and systems, with 5 MWh+ systems likely to expand into non-China markets in 2025.

These cells and systems showcase the trend towards higher capacity and energy-efficient solutions in the energy storage industry. The article emphasizes the growth of larger-capacity cells (300Ah+ and 500Ah+), which will play a significant role in upcoming storage solutions across the globe.

500AH+ Cells being manufactured in the near future

Company Name
References
Capacity (Ah)
Weight Energy Density (Wh/hg)
Volume Energy Density (Wh/L)
Claimed
Cycle Life (Times)
Dimensions (mm)
HiTHIUM
1130
180+
400
15,000
(25Years)
75x580x208
SVOLT
730
185
420
11,000+
52x500x215
NARADA
690
/
380-440
15,000
TBC
ETC
630
185
390
10,000+
TBC
REPT
625
12000
(25Years)
REPT
587
12000
(25Years)
EVE
628
185+
/
12,000+
(20Years)
71x352x207
CATL
TBC
587 (TBC)
185+
430
18000
(25-30Years)
TBC
VISION
580
/
/
/
352x71x205
CORNEX
625
185+
430+
18000
(25-30Years)
SUNWODA
625AH
625AH
430+
15000 (25Years)

All of these cells Lifespans are claimed in laboratory, and Container level, thermally managed installations.
The core temperatures are maintained at 25°C ± 2°C

The Growing Importance of Energy Storage

In the next 30 years, the energy storage industry is expected to experience explosive growth. Industry leaders predict that in 2024 alone, new energy storage capacities will exceed 180GWh. However, with this growth comes increased competition and industry consolidation, as companies with advanced technologies, robust supply chains, and strong brands are better positioned to thrive.

For REPT, which was the first to mass-produce 320Ah energy storage cells in 2023, maintaining technological leadership is key. The release of its new 587Ah and 625Ah cells marks the next step in its efforts to stay ahead in the competitive market.

As all of these manufacturers jostle, they must strive for longer lifespans, better energy efficiency and lighter batteries. All of these factors are important to the future of the World and its Energy needs as it moves away from fossil fuel and into the renewables age.

CATL
In December of last year, CATL began constructing a new production line for its 530Ah energy storage cells. According to industry experts, while the length of these 530Ah cells is extended, their width and thickness remain unchanged, enabling the reuse of the 280Ah production line equipment. The L-series battery cells in CATL’s Tianhang energy storage system boast an energy density of 430Wh/L, with single-cell capacities estimated to be at least 587Ah based on current data.

NARADA
On April 11, NARADA introduced a 690Ah high-capacity energy storage battery with an impressive lifespan of 20 years. Its volume energy density ranges from 380-440Wh/L, with a cycle life reaching up to 15,000 cycles. Each battery delivers more than 2kWh of energy, operating with over 96% efficiency. This battery is compatible with capacities ranging from 650Ah to 750Ah. A 20-foot energy storage system outfitted with this battery can achieve a capacity of 6MWh.

VISION
In May 2023, VISION launched its 580Ah energy storage battery, offering 1.856kWh of energy per cell with a weight of 11kg and a cycle life of 10,000 cycles. The company is planning to establish a 5GWh production base for these cells in Hubei.

ETC
Targeting the long-duration energy storage market (4-8 hours), ETC has developed a 630Ah energy storage battery capable of storing 2016Wh of energy per cell. These batteries offer a cycle life of over 10,000 cycles and an energy efficiency of more than 96%.

EVE
EVE became the first company in China to release 500+Ah battery cells back in October 2022 with its 560Ah LF560K energy storage battery. In August 2023, they introduced a new large laminated smart cell, the LF560K “Mr. Big,” with a capacity of 628Ah, delivering 2.009kWh per cell and a cycle life of 12,000 cycles. Earlier this year, the company announced its 628Ah “Mr. Big” technical route and the 5MWh “Mr. Giant” energy storage system. Production of the LF560K is planned at EVE’s Jingmen base, with an expected capacity of 60GWh. The first phase of the factory is anticipated to be operational by Q2, with full production starting by the end of the year.

TrinaStorage
TrinaStorage recently revealed the successful development of its 500Ah+ high-capacity batteries. According to the company’s director, the 500Ah+ battery represents a major innovation, striking a balance between performance and cost. This design, based on accumulated years of research in battery electrochemistry, optimizes the volume-specific energy density of the standard 20-foot battery compartment, resulting in a well-balanced solution.

HiTHIUM
HiTHIUM set a new industry benchmark with the world’s first long-term energy storage battery featuring a 1130Ah MIC capacity. This battery maintains over 60% SOH (State of Health), ensuring the energy storage system’s service life extends beyond 20 years.

SVOLT
SVOLT has released a 710Ah fly-stack short knife energy storage cell alongside a 660Ah long-life system cell. Recently, the company launched a 730Ah large-capacity short-knife battery, built upon the foundation of its L500-350Ah energy storage cell. This battery offers an energy density of 420Wh/L and a cycle life exceeding 11,000 cycles.

SUNWODA
SUNWODA has announced plans to release a 600+Ah battery program aimed at improving cell integration. This initiative will reduce PACK components by 40%, reinforce the cell structure, and make PACK platforms more adaptable and easier to modify.

News Lithium Battery-school Manufacturers
CATL’s 18000 Cycle Life LFP Battery Cell: Technological Innovations

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:

  1. 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.
  2. 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
  3. 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
  4. 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
  5. 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
  6. 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:

  1. 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)​.
  2. 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)​.
  3. 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.

More sources in relation to this topic

  1. Winding vs Stacking
  2. ALD (Atomic Layer Deposition) Coating
  3. Trends in modern Lithium manufacturing cells
  4. Winding and Z Stacking link
  5. Winding vs Z Stacking pt2
  6. Electrolyte Additives

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.

News Manufacturers
EVE Lithium LFP Cells List 3.2v

A list of cells manufactured by EVE in July 2024.
It details the capacity, energy density, estimated cycle life, weight, and Internal resistance of each cell.

Using this information you might be able to decide what cells suit your application best.
For example the LF50k cell is rated for 7000 cycles at 1C charge and discharge. But its energy density is very low. The main reason it gets such a good rating is because it can be actively cooled or heated in the right application, which can help tremendously with lifespan.
However you will also note that cycle life is now mostly spoken about at 0.5C or P. Meaning much of the information previously released has been further corrected over time.
All of these numbers are best case scenario, and usually at 25 degrees Celsius. So these numbers are basically unattainable in most cases.

Model
Capacity (Ah)
Voltage (V)
Cycle(time) 25°C
Internal Resistance (1KHz)
Weight (g)
Length × Width × Height (mm)
Energy Density (Wh/kg)
LF22K
22
3.22
4500 (3C/3C)
≤0.4mΩ
628±10
148.7×17.7×131.8
112
LF32
32
3.20
3500 (1C/1C)
≤1.5mΩ
730±50
148.3×26.8×94.3
140
LF50F
50
3.20
1500 (0.5C/0.5C)
≤2.0mΩ
1035±100
148.3×26.7×129.8
154
LF50L
50
3.20
5000 (0.5C/0.5C)
≤0.6mΩ
1090±50
148.6×39.7×100.2
154
LF50K
50
3.20
7000 (1C/1C)
≤0.7mΩ
1395±50
135.3×29.3×185.3
114
LF80
82
3.20
4000 (0.5C/0.5C)
≤0.5mΩ
1680±50
130.3×36.3×170.5
156
LF90K
90
3.20
6000 (1C/1C)
≤0.5mΩ
1994±100
130.3×36.3×200.5
144
LF100MA
101
3.20
2000 (0.5C/0.5C)
≤0.5mΩ
1920±100
160.0×50.1×118.5
168
LF100LA
102
3.20
5000 (0.5C/0.5C)
≤0.5mΩ
1985±100
160.0×50.1×118.5
164
LF105
105
3.20
4000 (0.5C/0.5C)
≤0.32mΩ
1980±60
130.3×36.3×200.5
169
LF125
125
3.22
4000 (0.5C/0.5C)
≤0.40mΩ
2390±71
200.7×33.2×172.0
168
LF150
150
3.22
4000 (0.5C/0.5C)
≤0.4mΩ
2830±84
200.7×33.2×207.0
170
LF160
160
3.22
4000 (0.5C/0.5C)
≤0.21mΩ
3000±100
173.9×53.8×153.5
171
LF173
173
3.22
4000 (0.5C/0.5C)
≤0.25mΩ
3190±96
173.9×41.06×207.5
174
LF230
230
3.20
4000 (0.5C/0.5C)
≤0.25mΩ
4140±124
173.9×53.8×207.2
177
LF280K
280
3.20
8000 (0.5C/0.5P)
≤0.25mΩ
5490±300
173.7×71.7×207.2
163
LF304
304
3.20
4000 (0.5C/0.5C)
≤0.16mΩ
5450±164
173.7×71.7×207.2
178
LF560K
560
3.20
8000 (0.5P/0.5P)
≤0.25mΩ
10700±300
352.3×71.7×207.2
167
MB30
306
3.20
10000 (0.5P/0.5P)
≤0.18mΩ
5600±300
173.7×71.7×207.2
174
MB31
314
3.20
8000 (0.5P/0.5P)
≤0.18mΩ
5600±300
173.7×71.7×207.2
179
V21
154
3.22
2000 (0.5C/0.5C)
≤0.5mΩ
2755±30
110.0×35.7×346.4
182
A22
178.1
3.22
2000 (0.33C/0.33C)
≤0.3mΩ
3170±230
280.7×31.0×88.6
180
A24
172.1
3.22
2000 (0.33C/0.33C)
≤0.45mΩ
3160±240
301.0×36.7×132.5
175
A31-V1
132.5
3.22
2000 (0.33C/0.33C)
≤0.45mΩ
2370±230
194.3×50.7×112.7
180
A31-V2
141
3.22
2000 (Fch/1C)
≤0.45mΩ
2450±230
194.3×50.7×112.7
185
A27
127.2
3.21
2000 (Fch/1C)
≤0.45mΩ
2220±330
88.0×37.2×309.5
183
A28
87.5
3.22
2500 (0.33C/0.33C)
≤0.57mΩ
1645±30
301.8×26.7×94.9
171
News Lithium Battery-school
The Lifepo4 QR code B to A Grade problem

Q. What is a QR Code?
A. Its a 3D barcode

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.
1200px .xlsx icon.svg1
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.

image

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

How to Quickly Identify Fake Batteries Part 3 QR code parsing

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)

H95df8f324b3a4959bece3fdc98ad34dbm1How to Quickly Identify Fake Batteries Part 3 QR code parsing
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:

  1. Balanced Performance: Matched batteries ensure consistent performance, as each battery will charge and discharge at the same rate.
  2. Safety: High-quality batteries reduce the risk of failures, such as overheating, leaks, or explosions.
  3. 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.
  4. 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:

  1. 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.
  2. 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.
  3. Safety Risks: A single faulty cell can overheat or fail, potentially causing damage to adjacent cells and posing safety hazards like fires or explosions.
  4. 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 loose 55% 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

News Home Manufacturers

The Yixiang DIY Battery Box is a customizable battery enclosure designed for DIY battery builders. It is sometimes promoted among those who assemble their own battery packs for various applications, including solar energy storage and backup power systems.

BE CAREFUL! these companies start off cheap, but end up expensive!

Make sure you have calculated ALL THE COSTS and never agree to a sale until you have had
1. TIME TO THINK about your purchase
2. Checked the competitors
3. Asked a business in your own Country for a quote for a similar or better item

YIXIANG DIY

  1. Modular Design: The battery box is modular, allowing users to configure it to fit different battery cell sizes and quantities. This flexibility makes it suitable for a range of battery pack designs.
  2. Durability: Made from high-quality materials, the box is designed to be durable and provide good protection for the battery cells inside. It is often constructed from fire-resistant and impact-resistant materials to ensure safety.
  3. Ease of Assembly: The design of the Yixiang DIY Battery Box emphasizes ease of assembly, with clearly marked components and straightforward instructions. This makes it accessible even for those with limited technical expertise.
  4. Ventilation and Cooling: Many models include features for ventilation and cooling, which help to maintain optimal operating temperatures for the battery cells, thereby enhancing performance and longevity.
  5. Compatibility: The battery box is compatible with various battery chemistries, including LiFePO4, NCM, and others. This versatility allows users to choose the best battery type for their specific needs.
  6. Customization Options: Users can customize the box with additional features such as BMS (Battery Management System) integration, LCD screens for monitoring, and various connectors and terminals to suit their application.
  7. Safety Features: The Yixiang DIY Battery Box often includes multiple safety features such as short circuit protection, overcharge and over-discharge protection, and temperature sensors to ensure the safe operation of the battery pack.
  8. Portability: Designed with portability in mind, many models include handles or wheels, making it easy to transport the assembled battery pack.

If you need more detailed specifications or information about a particular model, please let me know!

51.2V 314Ah 16kwh EVE 8000 cycles LiFePo4 Battery

Low Stock Stock is arriving soon

$6,999.00

51.2V 314Ah 16kwh EVE 8000 cycles LiFePo4 Battery Introducing the 51.2V battery featuring advanced 314AH (330+AH actual) MB31 cells from EVE, engineered for exceptional performance and durability. Ideal for off-grid setups use this battery sets a high standard in energy storage. OUR MOST POPULAR BATTERY in 2024 This Battery is now replaced by the even longer lasting EVE MB30 Version, You may order this battery, you will be supplied with the 306AH version with 10000 cycle cells, not the 8000 cycle MB31 314AH cells.  Features Superior Cell Technology: Utilizes the highest grade A+ LFP cells available globally, ensuring unmatched quality…

18 left in stock
SKU: LIFEPRO314Ah
Category: ,
Tags: , , , , , ,

    News Lithium Battery-school
    Understanding Lithium Battery Cell Purchasing from China: Navigating Quality and Shipping Challenges

    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

    1. 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)
    2. Alibaba sellers buy B grade cells from anywhere between 50-75% of the A+ grade price.
      This means $34-56 USD
    3. 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.
    4. The price is not that important, BUT! they are also making profits on the shipping because its not DG shipping. Its illegal.
    5. They do not declare the Batteries as DG in Australia either, so they pay $100’s of dollars less for this shipping pathway.
    6. 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
    7. 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.

    Lithium Battery-school News
    Key Aspects of IEC 62619:2022

    The IEC 62619:2022 standard specifies requirements and tests for the safe operation of secondary lithium cells and batteries used in industrial applications. This includes stationary applications like energy storage systems and mobile applications such as electric vehicles. The standard is crucial for manufacturers, integrators, and end-users who rely on lithium battery technology, as it addresses several critical aspects of safety and performance.

    Key Aspects of IEC 62619:2022

    Scope and Application:

    • The IEC 62619:2022 standard is specifically designed for secondary lithium cells and batteries for industrial applications. It does not cover batteries for consumer electronics or those used in electrically propelled road vehicles.
    • It is applicable to cells and batteries regardless of the lithium-ion chemical composition.

    Safety Requirements:

    • The standard includes stringent safety requirements for lithium-ion batteries to minimize risks such as thermal runaway, fire, and electric shock. These requirements are designed to protect users, technicians, and nearby equipment from potential hazards.
    • It mandates measures for the protection against mechanical abuses, electrical abuses (like overcharge and deep discharge), and thermal abuses, ensuring the batteries can withstand harsh conditions without failing.

    Testing Procedures:

    • IEC 62619:2022 outlines comprehensive testing procedures to verify compliance with its safety requirements. These tests assess the battery’s ability to safely charge and discharge, its resistance to mechanical stress, and its thermal stability, among other factors.
    • The tests include, but are not limited to, short circuit conditions, overcharge, forced discharge, thermal abuse, and mechanical shock tests.

    Performance Metrics:

    • While the primary focus of IEC 62619:2022 is on safety, it also considers performance aspects such as cycle life, capacity, and efficiency under various conditions, ensuring that the batteries not only are safe but also perform reliably over their intended lifespan.

    Documentation and Marking:

    • The standard requires clear documentation for the safe handling, operation, and maintenance of lithium-ion batteries. This includes data sheets, instructions for use, and safety warnings.
    • Batteries must be marked with specific information, including manufacturer details, type, electrical characteristics, and safety symbols, as applicable.

    Environmental Considerations:

    • Although IEC 62619:2022 focuses on safety and performance, manufacturers and users are encouraged to consider environmental impacts, including recycling and disposal of lithium-ion batteries in accordance with local regulations and best practices.

    Importance of IEC 62619:2022

    Compliance with IEC 62619:2022 is crucial for manufacturers and suppliers of lithium-ion batteries for several reasons:

    • Safety: It ensures that products are designed and tested to minimize risks of injury or damage.
    • Market Access: Many countries and industries require compliance with international standards like IEC 62619:2022 for market entry.
    • Quality Assurance: Adherence to the standard reassures customers and end-users about the quality and reliability of the batteries.
    • Regulatory Compliance: It helps manufacturers navigate the complex landscape of global regulations concerning lithium-ion batteries.

    For the most current and detailed information, including any amendments or interpretations, directly consulting the IEC 62619:2022 standard document and associated regulatory bodies is recommended.

    Lithium Battery-school
    JBD vs JK BMS : Comparing BMS Giants

    Comparing BMS Giants: JBD vs JK BMS

    In the world of Battery Management Systems (BMS), two names often come up as leading the pack: JBD and JK BMS. Both brands have carved significant niches for themselves in the energy storage and management industry, catering to a wide array of applications from electric vehicles (EVs) to stationary energy storage systems. This article aims to shed light on the similarities and differences between JBD and JK BMS, helping you to make an informed decision on which BMS brand might be the best fit for your specific needs.

    JiaBaida Logo
    JK BMS logo

    Background and Reputation

    JBD, short for Jiabaida, has earned a reputation for its high-performance, smart BMS solutions. The company focuses on the integration of advanced technology to ensure the safety, efficiency, and longevity of lithium batteries. JBD’s innovative approach towards battery management has made it a favorite among high-tech applications, including aerospace, electric vehicles, and high-capacity energy storage systems.

    JK BMS, on the other hand, is known for its robust and reliable battery management solutions that cater to a wide range of lithium battery applications. With a strong emphasis on research and development, JK BMS prides itself on delivering products that are not only cutting-edge but also customizable to fit the specific needs of their clients. Their BMS solutions are popular in EVs, portable electronics, and renewable energy storage systems.

    Product Range and Capabilities

    JBD

    JBD’s product lineup is impressive, focusing on smart BMS solutions that are adaptable to various battery types, including LiFePO4, NMC, and LTO chemistries. Their BMS products often come with features such as:

    • High precision measurements for voltage, current, and temperature
    • Advanced algorithms for state of charge (SOC) and state of health (SOH) estimations
    • Wireless communication capabilities for monitoring and control
    • Enhanced safety features, including short circuit, overcharge, and deep discharge protection

    JK BMS

    JK BMS offers a wide variety of BMS solutions designed to meet the demands of different battery applications. Their products stand out for:

    • Flexible configuration options for series and parallel connections of battery cells
    • Comprehensive data monitoring and logging features
    • Strong emphasis on safety with multiple protection layers against overvoltage, undervoltage, overcurrent, and overheating
    • Compatibility with various communication protocols for easy integration into existing systems

    Technology and Innovation

    JBD tends to emphasize the integration of AI and smart technologies into their BMS to enhance performance and safety. Their approach includes predictive analytics for maintenance and fault detection, which can significantly extend the lifespan of battery systems.

    JK BMS, while also innovative, focuses more on the robustness and reliability of their systems. Their BMS are built to withstand harsh environments and conditions, ensuring consistent performance and safety across a broad range of applications.

    Customer Support and Customization

    Both JBD and JK BMS provide extensive customer support and offer customization options to meet specific client needs. However, JBD takes a slightly more bespoke approach, working closely with clients to develop custom solutions that integrate seamlessly with their existing technology and applications.

    JK BMS, while offering customization, tends to have a more standardized product line, making it easier for clients to select and integrate BMS solutions without the need for extensive customization.

    Conclusion

    Choosing between JBD and JK BMS ultimately depends on your specific needs, application requirements, and preferences. If you prioritize cutting-edge technology, smart features, and customization, JBD might be the right choice for you. On the other hand, if you’re looking for robustness, reliability, and a product that’s easy to integrate into a variety of applications, JK BMS could be the better fit.

    Regardless of your choice, both brands offer high-quality BMS solutions that can enhance the performance and safety of your battery systems. The key is to carefully consider your requirements and make an informed decision based on the strengths of each brand.

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