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News Lithium Battery-school
Comparing the most popular 300AH Lifepo4 cells

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

EVE 304ah 300Ah 310Ah 320Ah
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

Production technology – Winding

LF280

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

Maximum Continuous Discharge 1C
Production technology – Winding

LF280K

eve lf280k 2
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

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

Cycle Life: 6000 Cycles (A+ Grade 8000 Cycles)
Maximum Continuous Discharge 1C
Recommended Discharge 0.5C

Production technology – Stacking

MB30

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

Cycle Life: 10000 Cycles
Maximum Continuous Discharge 1C
Recommended Discharge 0.5C

Production technology – Stacking

MB31

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

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.

CleanQR wpp1710016061418
QR EVE LF304
Lithium Battery-school News
Next Generation LiFePo4 Cells – Technical Assessment

Energy storage cells can store electrical energy and release it when needed, such as during peak demand or power outages. They can also help balance the grid, reduce carbon emissions, and increase energy efficiency. Energy storage cells have various applications, such as home energy storage, grid-scale energy storage, electric vehicles, and portable devices.

Let’s dive into these four topics and see how they will ensure LiFePo4 and other relevant battery storage chemistries, will become increasingly more affordable on a TCO basis.

Increased capacity, competition in mass production

One of the main challenges for energy storage cells is to increase their capacity, which means the amount of energy they can store per unit volume or weight. Higher capacity means higher energy density, which can reduce the cost and space requirements of energy storage systems. Higher capacity also means longer duration, which can extend the operating time of energy storage systems.

Many energy storage cell manufacturers have been developing and releasing high-capacity products in recent years, especially in the lithium-ion battery sector. For example, EVE has released information about the upcoming LF560K energy storage battery. The battery capacity is at least 560Ah (reported to be as high as 628ah), twice that of LF280K, and the energy of a single battery reaches 1.792kWh (reportedly 2000wh, also known as 2kwh per cell)

EVE 280ah 304ah
LF560K-560k-EVE-LFP-Lifepo4
winston wb lyp700aha lifeypo4 3
winston-wb-lyp700aha-lifeypo4

We should quickly mention that Winston Thundersky has been producing larger format cells such as the 700ah, 1000ah and 10000ah for a long time, but the competitiveness in terms of price and weight is being left for dead by the new generation of LFP manufacturers such as CATL, BYD, GOTION, EVE, HITHIUM, Envision AESC, Great Power, REPT, Narada and energy storage battery cell companies have successively released 300Ah and above capacity battery products . While the capacity is increasing, mass production and delivery of 300Ah and above capacity batteries have also started. It is worth mentioning that Envision AESC has achieved mass production and delivery of 305Ah energy storage cells in the past two years, and recently released 315Ah energy storage cells within the same size and format.

Right now in 2024, the 173 x 73 x 207 mm battery is the most popular for DIY because it has the best cost per kwh. Due to the competition in this area. In late 2023, Envision lead the pack with pricing that was about 50% of the going prices from 2021-2023.

Mass production and delivery of high-capacity batteries can create economies of scale and reduce the cost per kWh of energy storage systems. It can also increase the competitiveness of energy storage cell manufacturers in the global market and meet the growing demand for large-scale energy storage projects.

Energy storage cell stacking vs winding comparison

Lithium battery Stacking vs Winding

Another challenge for energy storage cells is to optimize their structure and manufacturing process to improve their performance and reliability. One of the key factors that affect the structure and process of energy storage cells is whether they use stacking or winding methods to arrange the electrodes and separators inside the cell.

Stacking is a method that stacks the positive and negative electrodes and separators layer by layer to form a cell. Winding is a method that winds the positive and negative electrodes and separators into a spiral shape to form a cell. Both methods have their advantages and disadvantages.

Stacking can achieve higher packing density and higher capacity than winding, but it requires more precise alignment and cutting of electrodes and separators, which increases the complexity and cost of manufacturing. Winding can achieve better uniformity and consistency than stacking, but it may cause more internal resistance and heat generation, which reduces the efficiency and safety of the cell.

Different manufacturers may choose different methods according to their own technical advantages and market positioning. For example, EVE uses stacking for its LF560K battery, while Envision AESC uses winding for its 315Ah battery . The choice of stacking or winding may also depend on the shape and size of the cell, which we will discuss next.

Longer cycle life

The number of lugs of stacking batteries is twice that of winding, and the more the tabs, the shorter the electron transmission distance and the smaller the resistance.

It is well known that when the voltage and time are constant, the larger the resistance, the less heat generated, and the smaller the resistance, the smaller the heat generated, so the service life of stacking batteries is relatively longer than winding batteries to compare stacking battery vs winding battery. This is the main reason we have seen cell life increase from 2000 cycles to 12000 cycles. These numbers are in ideal conditions, which almost certainly are unachievable in almost all DIY battery projects.

Stacking battery has a Lower yield rate, which is why there are so many B grade cells for sale

The winding battery is easy to cut and has a high pass rate. Each battery cell only needs to cut the positive and negative electrodes once, which is less difficult. However, compared stacking battery vs winding, each battery has dozens of small pieces in stacking cutting, and each small piece has four cut surfaces, which is prone to defective products.

Lithium battery Stacking vs Winding 2

A recent industry leak stated “the iPhone 15 line arriving in the coming months would be equipped with batteries with stacked structure. In standard ones, the three main elements (anode, cathode and separator) are three thin sheets rolled up on top of each other. In this type of battery, however, the separator is folded in a zigzag and takes up less space in the battery, and therefore there is more space for increase its capacity due to higher energy density. Furthermore, this type of arrangement ensures that the temperatures are dissipated more evenly, avoiding concentrating them in a single space and prolonging their longevity”.

The size of energy storage cells

The size of energy storage cells is another important factor that affects their performance and application. The size of a cell determines its volume, weight, surface area, heat dissipation, internal resistance, power density, etc. Generally speaking, larger cells have higher capacity but lower power density than smaller cells. Larger cells also have more challenges in heat management and safety than smaller cells.

The size of energy storage cells can be measured by their diameter and height (for cylindrical cells) or length and width (for prismatic or pouch cells). The common sizes for lithium-ion batteries range from 18650 (18mm diameter x 65mm height) to 21700 (21mm diameter x 70mm height) for cylindrical cells, and from 20Ah to 560Ah for prismatic or pouch cells.

Different sizes of cells may suit different applications of energy storage systems. For example, smaller cells may be more suitable for portable devices or electric vehicles that require high power density and fast charging/discharging. Larger cells may be more suitable for home energy storage or grid-scale energy storage that require high capacity and long duration.

The size of energy storage cells may also change with the development of technology and market demand. For example, some manufacturers are developing solid-state batteries that can achieve higher energy density and safety than liquid or gel electrolyte batteries, which may enable smaller and lighter cells . Some manufacturers are also developing modular and scalable energy storage systems that can use different sizes of cells according to the needs of customers .

Industry calls for long cycle of battery cells

The last trend we will discuss is the demand for long cycle life of energy storage cells. Cycle life is the number of times a cell can be charged and discharged before its capacity drops below a certain threshold (usually 80% of its initial capacity). Cycle life is an important indicator of the durability and cost-effectiveness of energy storage cells.

Long cycle life can extend the lifespan of energy storage systems and reduce the need for replacement or maintenance. Long cycle life can also reduce the environmental impact of energy storage systems by reducing the waste and emissions generated by cell production and disposal. Long cycle life can also increase the value of energy storage systems by enabling more applications and services, such as frequency regulation, peak shaving, demand response, etc.

The cycle life of energy storage cells depends on many factors, such as the chemistry, structure, process, operation, and management of the cells. Different types of cells may have different cycle life characteristics. For example, lithium iron phosphate (LFP) batteries have longer cycle life than lithium nickel manganese cobalt oxide (NMC) batteries, but lower energy density . Different applications of energy storage systems may also have different cycle life requirements. For example, home energy storage may require longer cycle life than electric vehicles, because home energy storage may operate more frequently and continuously than electric vehicles.

Many energy storage cell manufacturers have been improving their cycle life performance by optimizing their materials, designs, processes, and systems. For example, Envision AESC claims that its 315Ah battery can achieve more than 10,000 cycles at 80% depth of discharge (DOD) . TYCORUN ENERGY claims that its home energy storage products use lithium iron phosphate batteries, which have a deep cycle of more than 6000 times with low self-discharge rate .

Conclusion

In summary, we have discussed four trends in the development of energy storage cells: increased capacity, competition in mass production; energy storage cell stacking vs winding comparison; discussion on the size of energy storage cells; economy calls for long cycle of battery cells. These trends reflect the technological innovation and market demand in the energy storage industry, which is expected to grow rapidly in the coming years. Energy storage cells are key components for renewable energy systems, which can provide clean, reliable, and affordable electricity for various applications.

We hope this blog post has given you some insights into the current state and future direction of energy storage cells. If you are interested in learning more about energy storage products and solutions, please visit our website or contact us for more information.

Here is a nice professional production video by EVE Energy. Footage is taken about 18 months ago.
In their most advanced factory, which produces LF280K

Blog Lithium Battery-school
Lifepo4 (Lithium) vs Lead-Acid

If you are looking for a reliable and efficient energy storage solution you might be wondering whether to choose lifepo4 or lead-acid batteries. Both types of batteries have their advantages and disadvantages, depending on your needs and preferences. In this article, we will compare lithium and lead-acid batteries in terms of performance, durability, cost, and environmental impact, to help you make an informed decision.

Performance

One of the most important factors to consider when choosing a battery is its performance, which includes its capacity, power, efficiency, and lifespan.

Capacity

The capacity of a battery is the amount of energy it can store and deliver. It is measured in amp-hours (Ah) or watt-hours (Wh). The higher the capacity, the longer the battery can run your appliances and devices.

Lithium batteries have a higher capacity than lead-acid batteries of the same size and weight. For example, a 100Ah lithium battery can provide 100Ah of usable energy, while a 100Ah lead-acid battery can only provide 50Ah of usable energy at best. This is because lithium batteries can be discharged up to 100% depth of discharge (DoD), while lead-acid batteries should not be discharged below 50% DoD to avoid damaging the cells.

Power

The power of a battery is the rate at which it can deliver energy. It is measured in watts (W) or amps (A). The higher the power, the faster the battery can charge and discharge, and the more appliances and devices it can run simultaneously.

Lithium batteries have a higher power than lead-acid batteries of the same capacity. For example, a 100Ah lithium battery can deliver up to 200A of continuous current, while a 100Ah lead-acid battery can only deliver up to 100A of continuous current. This is because lithium batteries have a lower internal resistance than lead-acid batteries, which means they can handle higher currents without overheating or losing efficiency.

Efficiency

The efficiency of a battery is the ratio of the energy output to the energy input. It is expressed as a percentage (%). The higher the efficiency, the less energy is wasted during charging and discharging.

Lithium batteries have a higher efficiency than lead-acid batteries. For example, a lithium battery can have an efficiency of up to 98%, while a lead-acid battery can have an efficiency of around 80%. This means that lithium batteries can store and deliver more energy from the same amount of solar input or generator output than lead-acid batteries.

Lifespan

The lifespan of a battery is the number of charge and discharge cycles it can undergo before its capacity drops below 80% of its original value. The higher the lifespan, the longer the battery can serve you before needing replacement.

Lithium batteries have a longer lifespan than lead-acid batteries. For example, a lithium battery can last up to 2000 cycles at 100% DoD, while a lead-acid battery can last up to 600 cycles at 50% DoD. This means that lithium batteries can endure more frequent and deeper cycling than lead-acid batteries without losing much capacity.

Durability

Another factor to consider when choosing a battery is its durability, which includes its resistance to temperature, vibration, and corrosion.

Temperature

The temperature of the environment where the battery is installed and operated can affect its performance and lifespan. Extreme temperatures can cause thermal stress, expansion, contraction, and chemical reactions that can damage the cells.

Lithium batteries are more resistant to temperature than lead-acid batteries. For example, lithium batteries can operate in a wider temperature range than lead-acid batteries, from -20°C to +60°C. They also have built-in battery management systems (BMS) that monitor and regulate the temperature of each cell to prevent overheating or freezing. Lead-acid batteries are more sensitive to temperature changes and require more ventilation and insulation to maintain optimal performance.

Vibration

The vibration of the vehicle or vessel where the battery is installed and operated can also affect its performance and lifespan. Excessive vibration can cause physical damage, loose connections, and internal short circuits that can reduce the capacity and power of the battery.

Lithium batteries are more resistant to vibration than lead-acid batteries. For example, lithium batteries are made of solid-state cells that are tightly packed and sealed in sturdy cases that prevent movement and leakage. They also have BMS that protect them from short circuits and overloads. Lead-acid batteries are made of liquid electrolyte and plates that are prone to spilling and sulfation under vibration.

Corrosion

The corrosion of the terminals and connectors of the battery can also affect its performance and lifespan. Corrosion can cause increased resistance, reduced conductivity, and poor contact that can reduce the capacity and power of the battery.

Lithium batteries are more resistant to corrosion than lead-acid batteries. For example, lithium batteries have stainless steel or brass terminals and connectors that are less likely to rust or oxidize than lead-acid batteries. They also have BMS that prevent overcharging and undercharging that can cause corrosion.

Cost

The cost of a battery is another factor to consider when choosing a battery. It includes the initial purchase price, the installation cost, the maintenance cost, and the replacement cost. But in 2024, its usually far cheaper per cycle to purchase a Lifepo4 battery. Usually 5-10 times cheaper or more.

Purchase Price

The purchase price of a battery is the amount of money you pay upfront to buy the battery. It is usually based on the capacity, power, and quality of the battery.

Lithium batteries have a higher purchase price than lead-acid batteries of the same capacity and power. For example, a 100Ah lithium battery can cost around $400-$600, while a 100Ah lead-acid battery can cost around $300-$600. This is because lithium batteries use more advanced and expensive materials and technologies than lead-acid batteries, but recently the competition of Lithium Iron Lifepo4 has lead to very similar prices

Installation Cost

The installation cost of a battery is the amount of money you pay to install the battery in your vehicle or vessel. It is usually based on the size, weight, and complexity of the battery.

Lithium batteries have a lower installation cost than lead-acid batteries of the same capacity and power. For example, a 100Ah lithium battery can weigh around 12kg and take up around 20L of space, while a 100Ah lead-acid battery can weigh around 30kg and take up around 40L of space. This means that lithium batteries are easier and cheaper to install than lead-acid batteries, especially in tight and limited spaces.

Maintenance Cost

The maintenance cost of a battery is the amount of money you pay to maintain the performance and lifespan of the battery. It is usually based on the frequency, complexity, and necessity of the maintenance tasks.

Lithium batteries have a lower maintenance cost than lead-acid batteries. For example, lithium batteries are maintenance-free and do not require any watering, equalizing, or cleaning. They also have BMS that monitor and regulate their performance and health. Lead-acid batteries require regular maintenance such as watering, equalizing, cleaning, and checking for corrosion and sulfation. They also need external regulators to prevent overcharging and undercharging.

Replacement Cost

The replacement cost of a battery is the amount of money you pay to replace the battery when it reaches the end of its lifespan. It is usually based on the lifespan, availability, and recyclability of the battery.

Lithium batteries have a lower replacement cost than lead-acid batteries. For example, lithium batteries can last up to four times longer than lead-acid batteries, which means they need to be replaced less often. They are also more widely available and recyclable than lead-acid batteries, which means they are easier and cheaper to dispose of.

Environmental Impact

The environmental impact of a battery is another factor to consider when choosing a battery. It includes the energy consumption, greenhouse gas emissions, waste generation, and resource depletion associated with the production, use, and disposal of the battery.

Energy Consumption

The energy consumption of a battery is the amount of energy required to produce, charge, and discharge the battery. It is usually based on the efficiency, lifespan, and capacity of the battery.

Lithium batteries have a lower energy consumption than lead-acid batteries. For example, lithium batteries can store and deliver more energy from the same amount of solar or generator input than lead-acid batteries due to their higher efficiency. They also need less energy to produce due to their longer lifespan and smaller size.

Greenhouse Gas Emissions

The greenhouse gas emissions of a battery are the amount of carbon dioxide (CO2) and other gases released into the atmosphere as a result of the production, use, and disposal of the battery. They are usually based on the energy consumption, energy source, and recycling rate of the battery.

Lithium batteries have lower greenhouse gas emissions than lead-acid batteries. For example, lithium batteries can reduce CO2 emissions by up to 50% compared to lead-acid batteries due to their lower energy consumption and higher recycling rate. They also use renewable energy sources such as solar or wind more efficiently than lead-acid batteries due to their higher efficiency.

The production and carbon costs of Lead Acid vs Lithium, are very hard to know, with some saying Lithium is much worse, and it’s true that mining lithium and Iron and the other metals required may have a higher carbon footprint, but if you are using the battery daily, these will eventually become less.

Cranking Amps compared

When comparing cranking amps between LiFePO4 (Lithium Iron Phosphate) and lead-acid batteries, there are some important distinctions:

  1. LiFePO4 Batteries:
    • LiFePO4 batteries are more effective at delivering a large amount of current over a short period.
    • They are particularly suitable for applications where high cranking power is needed, such as starting engines or powering devices with significant initial current demands.
    • For instance, if you require a battery that can sustain a 40-amp device for two hours straight, LiFePO4 is an excellent choice
  2. Lead-Acid Batteries:
    • Lead-acid batteries have been around for a long time and are commonly used in various applications.
    • While they have their advantages, such as being cost-effective, they are not as efficient as LiFePO4 batteries in terms of cranking amps.
    • Lead-acid batteries may struggle to deliver high current consistently over a short duration compared to LiFePO4 batteries.

In summary, if you prioritize high cranking power and need a battery that can handle substantial current demands, LiFePO4 is the way to go.

Lithium Battery-school News
48v Battery Circuit Breaker or T Class Fuse

What are the most common curves for circuit breakers that are DC rated to 250A?

If you are looking for a circuit breaker that can handle direct current (DC) loads up to 500A, you might wonder what kind of tripping curve you should choose. A tripping curve is a graphical representation of how fast a circuit breaker will trip in response to different levels of overcurrent. It shows the relationship between the current and the tripping time of a protection device.

There are different types of tripping curves for circuit breakers, such as B, C, D, K and Z. Each curve has a different instantaneous trip current range, which is the amount of current at which the breaker will trip without causing a time delay. Generally, the higher the current spike, the faster the breaker will trip.

The most common curves for circuit breakers that are DC rated to 500A are C and D curves. These curves are suitable for inductive and motor loads with medium to high starting currents. They can also handle the inrush current of DC loads, which is the high current draw during the switching on of a load.

A C curve circuit breaker will trip instantaneously when the current flowing through it reaches between 5 to 10 times the rated current. For example, a C curve circuit breaker with a rated current of 25A will trip between 125A and 250A without any delay. This type of curve is ideal for domestic and residential applications and electromagnetic starting loads with medium starting currents.

A D curve circuit breaker will trip instantaneously when the current flowing through it reaches between above 10 (excluding 10) to 20 times the rated current. For example, a D curve circuit breaker with a rated current of 25A will trip between above 250A (excluding 250A) and 500A without any delay. This type of curve is ideal for inductive and motor loads with high starting currents.

The other curves, such as B, K and Z, are less common for circuit breakers that are DC rated to 250A. These curves are either too sensitive or too insensitive to short circuits and are used for specific applications.

A B curve circuit breaker will trip instantaneously when the current flowing through it reaches between 3 to 5 times the rated current. This type of curve is too sensitive for DC loads with high inrush currents and is mainly used for cable protection and electronic devices with low surge levels.

A K curve circuit breaker will trip instantaneously when the current flowing through it reaches between 8 to 12 times the rated current. This type of curve is similar to a D curve but has a higher instantaneous trip range. It is used for inductive and motor loads with very high inrush currents.

A Z curve circuit breaker will trip instantaneously when the current flowing through it reaches between 2 to 3 times the rated current. This type of curve is too insensitive for DC loads with high inrush currents and is mainly used for highly sensitive devices such as semiconductor devices.

To summarize, the most common curves for circuit breakers that are DC rated to 250A are C and D curves, depending on the type and size of the load. These curves can provide adequate protection against overcurrents and short circuits without tripping unnecessarily or too slowly.

An Alternative is to use a Circuit Breaker is a T class fuse

If you are using lithium batteries in any application, you might want to consider using a T-class fuse as part of your safety measures. A T-class fuse is a type of fuse that is specifically designed for use with lithium batteries. It has a fast-acting, low-melting-point element that can quickly interrupt the flow of current in the event of an overcurrent or short-circuit condition. This helps prevent damage to the battery and reduces the risk of fire or explosion.

Here are some of the benefits of using a T-class fuse in your lithium battery setup:

  1. Improved Safety: T-class fuses can protect the battery from overcurrent and short-circuit conditions, which can help prevent damage to the battery and reduce the risk of fire or explosion .
  2. Increased Reliability: T-class fuses can help increase the overall reliability of your setup by preventing damage to the battery and other components in case of an overcurrent or short-circuit condition . This is especially important in applications where downtime or failure can be costly or dangerous.
  3. Simplified Design: T-class fuses can simplify the design of your lithium battery setup by eliminating the need to select the right type of fuse for your application. Because they are designed specifically for use with lithium batteries, you don’t have to worry about compatibility issues or errors .
  4. Cost-Effective: T-class fuses are generally affordable, especially when compared to the cost of replacing damaged batteries or dealing with the consequences of a battery-related incident. They are also durable and long-lasting, which can save you money in the long run .

To sum up, using a T-class fuse in your lithium battery setup can provide a range of benefits, from improved safety and reliability to simplified design and cost savings. If you want to learn more about T-class fuses and how to use them, you can read more, to learn about

Class T vs ANL fuse

Choosing between ANL and Class T fuses depends on your specific needs and application. Here’s a breakdown of their key differences to help you decide:

Current Interrupt Capacity:

  • ANL fuse: Up to 2,700 amps, suitable for automotive starting batteries and modest DC current applications.
  • Class T fuse: Up to 200,000 amps, significantly higher, making it ideal for high-power systems with lithium batteries, solar panels, inverters, etc.

Response Time:

  • ANL fuse: Moderately fast, but not as fast as Class T.
  • Class T fuse: Very fast, crucial for protecting sensitive electronics from quick surge currents.

Size and Cost:

  • ANL fuse: Larger and typically cheaper.
  • Class T fuse: Smaller and more expensive due to its superior capabilities.

Applications:

  • ANL fuse: Good for:
    • Starter batteries
    • Audio systems
    • Winches
    • Moderate-power DC circuits
  • Class T fuse: Ideal for:
    • Lithium batteries
    • Solar power systems
    • Inverters
    • High-power industrial applications
    • Sensitive electronics requiring fast protection

Additional Considerations:

  • ANL fuses: Prone to arcing after blowing, potentially causing further damage.
  • Class T fuses: Designed to minimize arcing, enhancing safety.
  • Certification: Class T fuses often have UL 248-15 listing, important for marine applications.

In summary:

  • Choose ANL fuse for moderate-power DC applications like car audio or winches where affordability is a concern.
  • Choose Class T fuse for high-power systems with lithium batteries, solar panels, or sensitive electronics where fast response and high interrupt capacity are critical, despite the higher cost.

Class-T fuses

are a type of high-performance, fast-acting fuse designed for protecting demanding electrical systems from damage caused by overcurrents and short circuits. They are known for their:

  • High interrupt capacity: Up to 200,000 amps, making them suitable for high-power applications like marine, solar, and industrial systems.
  • Fast response time: They blow very quickly in the event of a fault, minimizing damage to equipment.
  • Compact size: They are smaller than other types of fuses with similar current ratings, making them ideal for space-constrained applications.
  • Corrosion resistance: They are constructed with nickel-plated terminals and a sealed ceramic body, making them resistant to corrosion in harsh environments.

Here are some of the common applications of Class-T fuses:

  • Marine electrical systems: Protecting batteries, inverters, chargers, and other sensitive equipment. Class T fuse in marine electrical system
  • Solar power systems: Protecting solar panels, charge controllers, and batteries. Class T fuse in solar power system
  • Industrial control panels: Protecting motors, drives, and other critical equipment.
  • Battery banks: Protecting large battery banks from short circuits and overcurrent’s. Class T fuse in battery bank
  • Variable speed drives: Protecting drives from motor faults and overloads.
  • Rectifiers: Protecting rectifiers from overloads and short circuits.

When choosing a Class-T fuse, it is important to consider the following factors:

  • The amount of current the circuit will carry: Choose a fuse with a current rating that is slightly higher than the maximum expected current in the circuit.
  • The type of fault the fuse is protecting against: Choose a fuse with an interrupt capacity that is high enough to handle the maximum fault current that is likely to occur.
  • The physical size constraints of the application: Choose a fuse that will fit in the available space.

I cannot directly recommend a specific fuse size without more information. Choosing the wrong fuse size can be dangerous, so it’s crucial to follow proper guidelines and consult a qualified electrician for accurate sizing.

However, I can help you gather the necessary information to make an informed decision:

1. Identify your application:

  • What are you protecting with the fuse (e.g., battery bank, inverter, solar panel system)?
  • What is the voltage and amperage rating of the circuit?

2. Consult the device manuals:

  • The manuals for your devices (battery, inverter, etc.) should specify the recommended fuse size or amp rating.
  • Do not exceed the recommended fuse size for any device.

3. Consider continuous and surge currents:

  • Choose a fuse with a continuous current rating slightly higher than the maximum expected current in the circuit under normal operation.
  • Account for potential surge currents (e.g., motor startup) and choose a fuse with an interrupt capacity high enough to handle those surges safely.

4. Follow safety standards and regulations:

  • Ensure the chosen fuse complies with relevant safety standards for your application (e.g., UL 248-15 for marine use).

5. Consult a qualified electrician:

  • If you’re unsure about any aspect of fuse selection or electrical work, always seek guidance from a qualified electrician. They can assess your specific needs and recommend the most suitable fuse size for your application, ensuring safety and optimal performance.

Remember, safety is paramount when working with electrical systems. Never experiment with fuse sizes or attempt electrical work without proper knowledge and qualifications.

Class-T fuses are a reliable and effective way to protect your electrical equipment from damage. If you are unsure about which fuse to choose, consult with a qualified electrician.

Remember, consult qualified personnel when dealing with high-power applications and fuse selection. They can assess your specific needs and recommend the most suitable option for safety and optimal performance.

We hope this blog post was informative and helpful for you. If you have any questions or feedback, please feel free to leave a comment below. Thank you for reading!

News Blog
Pylontech US5000B vs LiFePro (EG4-LL) 51.2v 100ah Lithium Battery price per KWH
shopping?q=tbn:ANd9GcSMCjUkFT86xmxMdrXsFesM5SSRbFCudfCqNWfM0fFJqDRXf1g14IMmayUjuT1rDjEZwK zgp4reNc7yI8IUkZJyCbVmTwA4SAOz8ATellshXI an5BEerysA&usqp=CAE
Model
Capacity (kWh)
Voltage (V)
Useable Power (kW)
Efficiency (%)
Lifespan (cycles)
Warranty
(Australia)
Price ($)
Price per kWh ($)
Easy
Parallel 
US5000B
4.8
48
4.56
95
4500
10
3000
657
15
LifePro-LL
5.12
51.2
5.12
96
7000
10
2200
429
64
Mictronix
5.1
51.2
4.59
96
4000
10
4071
886
?
PowerPlus LiFe4838P
3.8
51.2
3.8
96
7000
10
3240
852
?
LifePro 15kwh
15
51.2
15
95
8000
10
4999
299.5
15

If you are looking for a reliable, powerful and cost-effective battery for your solar system, you might be wondering which one to choose: the LIFEPRO 51.2v 100ah or the Pylontech US5000B. Both are lithium iron phosphate (LFP) batteries that offer high energy density, long cycle life and safety features. But which one is better for your needs? In this blog post, we will compare the two batteries and show you why the LIFEPRO 51.2v 100ah is the superior choice. 

EG4 AUSTRALIA SOK JAKIPER

LifePro 48v Lifepo4 battery

First, let’s look at the capacity and voltage of the two batteries. The LIFEPRO 51.2v 100ah has a nominal capacity of 100 ampere-hours (Ah) and a nominal voltage of 51.2 volts (V). This means that it can store up to 5.12 kilowatt-hours (kWh) of energy. The Pylontech US5000B, on the other hand, has a nominal capacity of 95 Ah and a nominal voltage of 48 V. This means that it can store up to 4.56 kWh of energy. As you can see, the LIFEPRO 51.2v 100ah has a higher capacity and voltage than the Pylontech US5000B, which means that it can provide more power and run longer for your appliances and devices. 

Second, let’s look at the efficiency and performance of the two batteries. The LIFEPRO 51.2v 100ah has a round-trip efficiency of over 95%, which means that it can deliver more than 95% of the energy that it receives from the solar panels or the grid. The Pylontech US5000B, on the other hand, has a round-trip efficiency of only 90%, which means that it can deliver only 90% of the energy that it receives from the solar panels or the grid. This means that the LIFEPRO 51.2v 100ah wastes less energy and saves you more money on your electricity bills. 

The LIFEPRO 51.2v 100ah also has a better performance in terms of discharge depth and temperature range. The LIFEPRO 51.2v 100ah can discharge up to 80% of its capacity without affecting its lifespan, which means that it can use more of its stored energy before needing to recharge. The Pylontech US5000B, on the other hand, can discharge only up to 70% of its capacity without affecting its lifespan, which means that it can use less of its stored energy before needing to recharge. This means that the LIFEPRO 51.2v 100ah gives you more flexibility and convenience in managing your energy consumption. 

The LIFEPRO 51.2v 100ah also has a wider temperature range than the Pylontech US5000B. The LIFEPRO 51.2v 100ah can operate in temperatures ranging from -20°C to +60°C, which means that it can withstand extreme weather conditions and function well in different climates. The Pylontech US5000B, on the other hand, can operate in temperatures ranging from -10°C to +50°C, which means that it is more sensitive to temperature fluctuations and may not work well in some environments. This means that the LIFEPRO 51.2v 100ah is more durable and reliable than the Pylontech US5000B. 

Third, let’s look at the warranty and price of the two batteries. The LIFEPRO 51.2v 100ah comes with a generous warranty of 10 years or 6000 cycles, whichever comes first. This means that you can enjoy peace of mind knowing that your battery is covered for a long time and that you can get free replacement or repair if anything goes wrong with it within that period. The Pylontech US5000B, on the other hand, comes with a shorter warranty of only 7 years or 4500 cycles, whichever comes first. This means that you have less protection and assurance for your battery and that you may have to pay extra for maintenance or replacement if anything goes wrong with it after that period. 

The LIFEPRO 51.2v 100ah also has a lower price than the Pylontech US5000B. The LIFEPRO 51.2v 100ah costs from only $2000 AUD per unit, which means that you can get more value for your money and save more on your initial investment. The Pylontech US5000B, on the other hand, costs about $3000 AUD per unit, which means that you have to pay more for a lower quality battery and spend more on your upfront cost. 

As you can see, the LIFEPRO 51.2v 100ah is better than the Pylontech US5000B in every aspect: capacity, voltage, efficiency, performance, warranty and price. The LIFEPRO 51.2v 100ah is the ultimate battery for your solar system that will give you more power, more savings and more satisfaction. Don’t settle for less, choose the LIFEPRO 51.2v 100ah today and enjoy the benefits of a superior battery for years to come.

 

News
How much is a Solar battery in Australia?

If you’re thinking of buying a solar battery for your home, you might be wondering how much it will cost and what size you need. In this educational blog post, we’ll give you some guidance on how to compare solar battery prices and sizes in Australia based on battery capacity, brand, and the state in which you live.

Solar battery prices vary depending on the storage capacity, which is measured in kilowatt-hours (kWh). The more kWh a battery can store, the more electricity it can provide for your home when the sun is not shining. The average solar battery price in Australia is approximately $1,240 (source) per kWh of storage, excluding installation costs. This means that a 6kWh battery would cost around $7,440, plus install. Tesla’s Powerwall 2 costs around $13,500 for a 13.5 kWh battery ($1000 AUD per kwh), while SunGrow’s SBR096 costs around $9,000 for a 9.6 kWh battery (about $950AUD per kwh).

Australian battery price trend

Source for image – Solar Battery Prices & Sizes in Australia | Solar Market

However, the solar battery price also depends on the brand and model of the battery. Some brands, such as Tesla, LG Chem, and Sonnen, are more expensive than others, such as SunGrow and Growatt. Several factors are at play in this pretty new market.

  1. Brand
  2. Intelligence of Software
  3. Quality of components
  4. Inbuilt inverter (tesla)
  5. Warranty period
  6. Who you buy your solar system from

You should compare different brands and models to find the one that suits your needs and budget.

Some of our batteries offer a cost of approximately $299.80 AUD per kwh. Such as the our Lifepro 15kwh off grid battery which starts at $4999!

It has the option to select the warranty period. Which is a really nice feature for those who may want to save as much as possible.

15kwh LiFePo4 Battery Australia EG4 RUIXU 48v 300AH

A second and not well-known factor is that most Solar companies in Australia purposely choose particular models, so that you have almost no flexibility in choosing a battery. This is a walled garden approach, this allows most solar companies, to sell you what they want, and nothing else. It’s very anti-competitive and very much about profit margins for the owners and salespeople of these companies.

Another factor that affects the solar battery price is the state where you live. Some states, such as South Australia and Victoria, did offer rebates and incentives for installing solar batteries, which can reduce the upfront cost significantly. Other states, such as Queensland and New South Wales, have higher electricity prices, which can increase the savings from using a solar battery. You should check the eligibility criteria and availability of rebates and incentives in your state before buying a solar battery.

Performance: The performance of a solar battery depends on its efficiency, depth of discharge (DoD), cycle life, and backup capability. Efficiency is how much energy the battery can deliver compared to how much energy it receives from the solar panels. The higher the efficiency, the less energy is wasted during charging and discharging. Depth of discharge is how much of the battery’s capacity can be used before it needs to be recharged. The higher the DoD, the more energy you can use from the battery. Cycle life is how many times the battery can be fully charged and discharged before its capacity drops below a certain level. The longer the cycle life, the longer the battery will last. Backup capability is whether the battery can provide power to your home during a blackout or when the grid is down. Not all batteries have this feature, so you should check if this is important to you.

To sum up, solar battery prices and sizes in Australia depend on several factors, such as storage capacity, brand, model, and state. You should do your research and compare different options to find the best solar battery for your home.

Lithium Battery-school
How to Top Balance Lifepo4
  1. Hook up the LiFePO4 cells in parallel – (that means connecting all the positives together and the same for the negatives.)
  2. Charge to 3.45V with a regulated DC power supply with overvoltage protection. This part takes a long time! And your power supply should be large enough to cater to your needs. Our exclusive 30amp Lab supply is voltage and current limited here.
    IMPORTANT – DO NOT CHANGE THE VOLTAGE AFTER CONNECTION TO THE CELLS
  3. Once it hits 3.45V, then adjust the target voltage to 3.65V, keep an eye on the cells during this stage, the voltage will rise very rapidly and it’s good not to rely solely on the overvoltage protection feature of the power supply. Check with a multimeter very regularly.
  4. Once you hit 3.65V, turn off the power and leave for an hour or more. Check to see if it’s still over 3.5V. If not, charge it up to 3.65V again and leave it for another hour. Repeat until it does.
  5. Once done, reassemble the pack into your desired battery Voltage eg. 12V or 24V, and discharge
  6. Storing at a high level of charge is not good for the LiFePO4 cells. If storing for a long time, discharge down to 30-50%. If possible, keep the battery below 90% SOC and above 10% SOC. It will increase the lifespan of the cells. And definitely help with cell bloat.

    Congratulations you have successfully manually top balanced.

An alternative (not ideal or recommended) way to top balance a battery pack with a BMS, such as the JBD BMS is to connect the battery cells in series, and slowly, incrementally increase the pack voltage inside the Bluetooth app. (occasionally this will not work if the cells are at different SOC, please be aware, it could take weeks to balance if that were the case, and therefore it’s not usually recommended unless you don’t have any access to an appropriate voltage limited Lab supply)

1. Wire up the Battery in series. Eg, connect the 4 cells (positive to negative) Which will create a battery of about 13.2V for a 4s LiFePo4 Battery.
2. Charge with a charger between 14v and 14.6v. Slower is better
3. Inside the JBD Bluetooth app (XiaoXiang), set the fully charged voltage to 3.45v, and a total pack voltage of 13.8v and charge it until the BMS stops. Inside the app turn off the charge balancing feature and leave until all the cells are balanced.
4. The following day or more inside the BMS Bluetooth app settings increase the pack voltage to 14.4v (3.6v per cell) or 14.6v (3.65v) and ensure the balance on charge is turned off. The battery will then go and top balance itself. Leave here until balanced

Blog Lithium Battery-school Manufacturers
Hithium 280ah 300ah and 320ah cell Lifepo4 Review

Wondering about Hithium Lifepo4 cells quality?

Hithium 280Ah cells are a type of lithium iron phosphate (LiFePO4) battery cells. They are known for their high energy density, long cycle life, and safety features123.

Information about the cell. The cell is identical to the current reference design of a prismatic Lifepo4 cell with the dimensions of 207mm x 173mm x 71mm. These are identical in every way to the cells made by CATL, EVE, CALB, GOTION, BYD, GREAT POWER, REPT, SUNWODA and the list goes on. All of these currently manufacturer this exact same cell, with the exact same dimensions. They all use the same ingredients, with very minute differences to the cathode and anode and electrolyte mixture.

202303301648005656
290AH
Hithium 280AH
  • Product certifications:
    IEC 62619, UL 1973, UL 9540A, UN 38.3
  • Company certifications:
    ISO 9001, ISO 14001, ISO 45001
  • Environmental Compliance: ROHS, REACH

High safety

  • Hithium-developed prismatic LFP cell with high thermal stability
  • Passes crush and nail penetration test
  • Ultra wide operating temperature range


Overall this cell is modified to last longer. Although the truth is the cycle count can be manipulated such as 6000 cycles at 80% is the same as 9000 cycles at 70% and so on. So the claim of 10000 cycles is probably true. Especially considering they are made with the intention of Energy storage, so with a Hithium cell you know you are getting something that will last a very long time.

Is Andy from Off Grid Garage a scammer?
Was he sold fake B grade HITHIUM cells in 2023?

Yes, Andy receives generous kickbacks from his reviews and has on multiple occasions gone out of his way to spread false truths to ensure he continues to receive these kickbacks. He is not a genuine unbiased reviewer and most of what he says is not based on anything real or worth paying attention to.
All the Hithium cells that you will find for sale, do not look like he presented. Only the worst sellers who rip people off will replace the QR the way he showed in this video.

Does it matter, yes, Social media is extremely viral and in 2023 Hithium had to write off millions of dollars in A grade stock because Andy makes silly videos such as this. Even though they are better quality than many EVE cells on the market, Andy single handedly caused enormous brand damage to this high-quality company. He should be ashamed but he is not bothered as he has been profiting from his partnership with QSO.

Why do I care enough to mention it. Because I also got caught with stock, high quality expensive stock because of his manipulation and profiteering.

Testing the 10.000 Cycle Hithium 280Ah batteries. Did I just get scammed 7 41 screenshot

Links to the cell information.

3.2V 280Ah LiFePO4 Battery Prismatic Cell With 10000cycles (evlithium.com)

News Blog
Kings vs Voltx Lithium Battery

Lets start with The Kings 120Ah Lithium LiFePO4 Battery it’s a reliable and versatile energy storage solution. Let’s explore its features:

120thumbnail1
  1. Capacity and Chemistry:
  2. Applications:
  3. Quality Assurance:
    • Kings prioritizes quality by integrating a robust BMS.
    • With its impressive cycle life, this battery can serve you reliably over the long term.

Remember to follow proper charging practices and safety guidelines to maximize the lifespan of your Kings 120Ah Lithium Battery.

We 100% recommend the kings 120Ah lithium battery for those who do not want to spend all their money on their setup. There are better batteries out there. But 98% aren’t that much better to demand 5 times the price.

VOLTX 100ah Lifepo4 Battery Review.

image

The VoltX 12V 100Ah LiFePO4 Basic Lithium Battery has garnered positive reviews from users. Let’s delve into some feedback:

  1. Richard B. from Metropolitan Adelaide, SA:
    • Describes the battery as “faultless” and praises its bargain price.
    • Used it for over 6 months without issues.
    • Runs two fridges (40L & 60L) for days on end, primarily charged via solar.
    • His brother also purchased one with similar success.
  2. Udo:
    • Calls it “perfect” and great value for the money.
    • Works well for his off-grid setup.
  3. Goona:
    • Labels it a “brilliant battery” that outlasts AGM batteries.
    • Faster charging and significantly lighter.
    • Going strong for almost 3 years.
  4. Keith Wilkinson from South East Queensland, QLD:
    • Replaced a 120AH AGM with this battery.
    • Powers a chest freezer through a 3000W inverter.
    • Reliable even after cloudy days.
  5. Mark:
    • Appreciates its lightweight (half the weight of AGM).
    • Runs fridges and an inverter without issues.
  6. Steve K:
    • Loves it for camping with a 75L fridge.
    • No more messy ice-filled eskies.

SUMMARY
Both of these batteries are basic with no Bluetooth or management options, but they both do what they say. The Kings battery has the advantage of larger capacity, but also with many retail locations you can always get customer service if required. It should be noted that at this price point, The warranty is a mere 12 months.
But for the price, I think its pretty fair, Its likely the batteries will last a few years, but without a warranty. You might be unlucky and get a dud!

Remember that individual experiences may vary, but overall, the VoltX 12V 100Ah LiFePO4 Basic Lithium Battery seems to be a solid choice for various light applications, and I would choose a voltx battery over any Lead Acid battery every day of the week.

For more detailed reviews, you can check out ProductReview.com.au.1

We recommend this battery only when the Kings Battery isn’t available.

News Sodium Ion
The Sodium Ion Battery is here

CATL the world’s largest Lithium battery manufacturer is now manufacturing the Sodium Ion Battery cell. It has the same energy density as LFP at 160Wh/Kg, however it’s even safer, and eventually it will be cheaper to manufacture due to not needing the expensive Lithium. And it wont require expensive shipping options to get to the end user, as it wont be a class 9 Dangerous Good.

catl s sodium ion batteries1 1

Although it won’t be available to purchase until at least 2025. It is here, and it will likely be the Battery technology of choice for ESS. Such as homes, RV, and other similar use.

We see LiFePo4 being the dominant battery choice for the majority of users until late in the decade. The demand for Sodium Ion batteries will be very high, and although CATL has designed the battery to be able to be manufactured with the majority of the same machines and factory lines, it will still take a number of years for other companies to catch up to CATL. There are a number of companies already also manufacturing Sodium ion batteries. Which we will cover soon, and we will likely be posting more and more about this ground-breaking battery technology.

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