In the field of energy storage batteries, large-capacity lithium iron phosphate(LiFePO4) batteries are popular in the market because of their safety, cost, cycle life and other advantages.
In recent years, the hot sales of 280ah LiFePO4 batteries from battery manufacturers such as CATL, CALB, and EVE are the best proof. After that, in order to reduce costs and increase efficiency, these battery manufacturers launched 314ah LiFePO4 batteries with the same size as 280ah.
So what is the difference between the 314ah LiFePO4 batteries of these manufacturers? What is the difference between the 314ah LiFePO4 battery and the previous generation 280ah LiFePO4 battery? Let’s learn about it together today!
Table of Contents
CATL
CATL is one of the top ten lithium-ion battery manufacturers in China and one of the largest lithium-ion battery manufacturers in the world. It focuses on the research and development, production and sales of lithium-ion power battery and energy storage battery. CATL not only occupies a leading position in the domestic Chinese market, but also actively expands its overseas business and has established close cooperative relations with many internationally renowned automobile manufacturers, including Tesla, Volkswagen, BMW, etc.
As the industry leader, CATL was the first to reveal the news of mass production of 314ah battery cells in August 2023. At that time, CATL announced its new containerized energy storage product: the 5MWh EnerD series liquid-cooled energy storage cabinet. Compared with the previous generation of products, this containerized energy storage cabinet saves more than 20% of floor space, reduces construction work by 15%, and reduces commissioning and operation costs by 10%. And this product is loaded with 314Ah LiFePO4 battery cells.
Below is the datasheet of CATL 314ah LiFePO4 battery:
Parameter | Specification | Condition | |
Typical capacity | 314 Ah | The average temperature of cell is maintained at 25±2°C，0.5P constant power charge to 3.65 V, rest 30min，0.5P constant power discharge to 2.5 V, rest 30min，cycle 4 times，the average capacity of last 3 times | |
Typical Energy | 1004.8 Wh | Fresh cell | |
Operating voltage | 2.5~3.65V 2.0~3.65V | Cell temperature T>0°C Cell temperature T≤0°C | |
Impedance (1KHz) | 0.18±0.05mΩ | Fresh cell （~30%SOC） | |
Shipping capacity | 94.2±1Ah |
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Residual capacity loss | Per month ≤3.5%, First Month Per month ≤3.0%, After First Month | Full cell, 30%SOC, 25±2°C storage | |
Operating temperature (charging) | 0~60°C |
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Operating temperature (discharging) | -20~60°C |
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Cell Weight | 5.49±0.3Kg |
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Storage Temp. | -35~60°C | Storage ambient humidity < 85% ROH, no condensation | |
Typical dimension （W*H*T） | (Width)：174.26±0.8mm (Height)：204.44±0.8mm (Thickness)：71.65±0.8mm | Thickness with compression force (300±20 Kgf), Height with Terminal | |
Rest SOC | ≥8% | SOC interval without load or charging | |
Altitude | ＜5000m |
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Cycle performance | 7000 Cycles@70%SOH | The temperature is maintained at 25± 2°C, cycle test by the standard charge and discharge method under 300±20Kgf preload, Fading to 70% of standard capacity. | |
Standard charge power | 0.5P | 25±2°C | |
Maximum sustainable charging power | 0.5P | 25±2°C | |
Standard charge voltage | Cell max voltage 3.65V |
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Standard charge method | The average temperature of cell is maintained at 25±2°C,0.5P constant power charge to 3.65 V, rest 30min | ||
Standard charge temperature | 25±2°C | Cell Temperature | |
Charging temperature （Cell Temperature） | 0~60°C | No matter what charge mode the battery is in, stop charging once the cell temperature exceeds absolute charge temperature range. | |
Upper limit charging voltage | Max 3.65V | No matter what charge mode the battery is in, stop charging once the cell voltage exceeds absolute charge voltage. | |
Standard discharge power | 0.5P |
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Standard discharge method | The average temperature of cell is maintained at 25±2°C,0.5P constant power charge to 3.65 V, rest 30min | ||
Maximum discharge power (continuous) | 0.5P | ||
Discharge cut-off voltage | 2.5V 2.0V | （Temp.）T>0°C （Temp.）T≤0°C | |
Standard discharge temperature | 25±2°C | Initial temperature of cell and Ambient Temperature | |
Absolute discharge temperature | -20~60°C | Stop discharging once cell temperature is outside this range regardless of whether continuous or pulse current is adopted. | |
EVE
EVE was founded in 2001 and initially focused on the research and development and production of lithium primary batteries. It has established a strong market position in consumer electronics and IoT applications. With the rise of the electric vehicle industry, EVE decisively entered the power battery and energy storage battery market. After more than 20 years of development, EVE has grown into a global leading lithium battery manufacturer, with product lines covering consumer batteries, power batteries, energy storage batteries and other fields.
EVE said that its Mr. Giant 5MWh energy storage system using 314ah LiFePO4 battery cells reduced system losses by 1%, achieved system energy efficiency of up to 95.5%, and increased operating income by 3.6 million yuan over its entire life cycle.
Before the launch of MB31 314ah battery cells, LF280k 280ah battery cells and LF304 304ah battery cells were the most popular among EVE’s large-capacity battery cells. It is reported that 314ah battery cells, as an upgraded version of 280ah battery cells, are currently rapidly increasing their share in China’s large-scale energy storage market. It is expected that large-scale energy storage will fully switch to 314ah battery cells in 2025. For overseas markets, due to product cycles and customer recognition of the stability of 280Ah products, it is expected that 280Ah and 314Ah will coexist for a period of time.
Below is the data sheet for the MB31 314AH battery cell:
Item | Parameter | Remark | ||
Nominal Capacity | 314Ah | 0.5P / 0.5P, 25℃ ± 2℃, 2.5 V ~ 3.65 V Fresh cell | ||
Nominal Energy | 1004.8Wh | |||
Nominal Voltage | 3.2v |
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End-of-charge Voltage (Umax) | 3.65v |
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End-of-discharge Voltage (Umin) | 2.5 V T >0℃ 2.0 V T ≤0℃ |
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Initial Internal Resistance | 0.18 mΩ ±0.05 mΩ | AC, 1 kHz, Delivery SOC, Fresh cell | ||
Standard Charging Power | 0.5P | 25℃ ± 2℃ | ||
Max. Continuous Charging Power | 0.5P | 25℃ ± 2℃ | ||
Standard Discharging Power | 0.5P | 25℃ ± 2℃ | ||
Max. Continuous Discharging Power | 0.5P | 25℃ ± 2℃ | ||
Operation Temperature | Charging Temperature | 0℃ ~ 60℃ |
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Discharging Temperature | -30℃ ~ 60℃ | |||
Standard charging voltage | Single cell ≤ 3.65 V | |||
Standard charging mode | Charge to 3.65 V with a constant power of 502.4 W | |||
Absolute charging temperature (cell temperature) | 0℃ ~ 60℃ | No matter what charging mode the cell is in, once the cell temperature exceeds the absolute charging temperature range, stop charging. | ||
Absolute charging voltage | Max 3.8 V | No matter what charging mode the cell is in, once the cell voltage exceeds the absolute charging voltage, stop charging. | ||
Standard discharge mode | Discharge to 2.5 V with a constant power of 502.4 W | |||
Absolute discharging temperature (cell temperature) | -35℃ ~ 65℃ | No matter what discharging mode the cell is on, once the cell temperature exceeds the absolute discharge temperature range, stop discharging. | ||
Absolute discharging voltage | Min 1.8 V | No matter what kind of discharging mode the cell is on, once the cell voltage is less than the absolute discharge voltage, stop discharging. | ||
Storage temperature | 1 month | -20℃～45℃ | Delivery SOC status | |
1 year | 0℃～35℃ | |||
Self-discharge | First Month | ≤3.5% / M | Delivery SOC status, 25°C ± 2°C storage | |
After First Month | ≤3% / M | |||
Dimension | Height1(H1) | 207.2 mm ± 0.5 mm | With Terminal | |
Height2(H2) | 204.6 mm ± 0.5 mm | Without Terminal | ||
Length(L) | 173.7 mm ± 0.5 mm |
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Thickness(T) | 71.7 mm ± 0.8 mm | (300 kgf ± 20 kgf compression force, Delivery SOC) | ||
Center distance between the poles | 123.0 mm ± 0.3 mm |
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Weight | 5600±300 g |
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Cycle Life | 25℃ Cycle | 8000 cycles, 70% SOH |
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Swelling Force | 70% SOH | ≤ 50000 N |
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60% SOH | ≤ 60000 N |
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Customers often ask what is the difference between MB31 314AH and LF280K 280AH. Below is a comparison chart of the two battery cells, which lists the similarities and differences between them for your reference.
From the picture we can see that the size and nominal voltage of MB31 314AH and LF280K 280AH are the same. MB31 314AH has higher capacity and lower internal resistance than LF280K 280AH, can store more electricity, and has higher energy density.
CALB
CALB was founded in Luoyang, Henan, and later moved its headquarters to Changzhou, Jiangsu. With its military background, CALB has rapidly grown into one of the most important lithium-ion battery manufacturers in China and even the world with its strong technical strength and efficient business strategy.
At about the same time as CATL, CALB first released its 314Ah LiFePO4 battery cell product at CIBF in May 2023. On September 16, 2023, CALB officially announced “the world’s first mass-produced and delivered 314Ah high-energy density, long-life energy storage battery cell and supporting solutions” at the RE+ exhibition in the United States. It is said that the upgraded 314Ah battery cell uses a breakthrough lithium replenishment technology, and the cycle life has been greatly increased to 15,000 times.
There is no doubt that CALB’s 314Ah is also used in its 5MWh liquid-cooled energy storage system products. According to CALB’s official announcement in October 2023, it will “develop a 20-foot liquid-cooled 5.016MWh product for power station-level energy storage systems.”
As we all know, SUNGROW won a large energy storage order of 7.8GWh from Saudi Arabia in July. SUNGROW will provide more than 1,500 PowerTitan2.0 liquid-cooled energy storage systems, which use 314Ah LiFePO4 battery cells from CALB.
The following are the specific data sheet of CALB 314AH LiFePO4 battery cell:
Item | Parameter | Remarks |
Rated Capacity | 314Ah | Standard Discharge |
Rated Voltage | 3.2v | Standard Discharge |
Rated Energy | 1004.8 Wh | Standard Discharge |
Cell Weight | 5.56±0.15 kg |
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Mass Energy Density | 180.7Wh/kg | Standard Discharge |
Cell Volume | 2.55L(without terminal) |
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Volume Energy Density | 394.0 Wh/L | Standard Discharge |
ACR | ≤0.23 mΩ | 40%SOC, Room Temperature, AC Impedance, 1000 Hz |
Charging Temperature | 0~55°C |
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Discharging Temperature | -30~55°C |
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Storage Temperature | -40℃~60℃ |
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Dimension | Width: 174.7±0.8mm |
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Thickness: 71.47±0.5mm | 40%SOC,300±20Kgf | |
Height: 207.2±0.5mm (with terminal) |
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Height: 204.57±0.8mm (without terminal) |
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Voltage Range | 2.5~3.65 V | 0℃＜T≤60℃ |
2.0~3.65 V | -30℃≤T≤0℃ | |
Operation limit | Charging voltage | 3.65 V |
Discharging voltage | 2.5 V (T＞0℃) 2.0 V (≤0℃) | |
Can Material | Al3003 H14 |
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Insulation tape Material | PET (Color: 110um Blue) | U-type horizontal sticking |
Positive terminal Material | Al 1060 H14 |
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Negative terminal Material | Al 1060 H112&Cu T2 |
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Top insulation film Material | PET, Thickness: 0.3 mm black |
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REPT
REPT was invested and founded by China’s private enterprise giant Tsingshan Holding Group. With strong financial support and innovative technological capabilities, it has quickly become one of the main competitors in China’s lithium ion battery industry. REPT has not only achieved a significant market position in the Chinese market, but has also actively expanded its overseas business, established partnerships with a number of internationally renowned energy companies, and is committed to providing high-quality lithium-ion batteries to global customers.
Through its original top-to-bottom technology, REPT has achieved an increase in the utilization of battery internal space and a decrease in DC internal resistance, thereby significantly improving the energy efficiency and safety of the battery. Taking the REPT 314Ah LiFePO4 battery cell product as an example, at an efficiency of 96.4%, a single battery can reduce 31.4kg CO₂e emissions.
In the Japanese market, 314Ah LiFePO4 battery cells and 5MWh energy storage systems have penetrated rapidly. REPT has signed a 2GWh energy storage system contract with a Japanese developer, involving a 2MW/8MWh system configuration using 314Ah LiFePO4 battery cells. It is understood that the 2MW/8MWh energy storage system has a high adaptability in various market areas in Japan, and is expected to achieve stable growth in economic benefits in the next year.
Below are the specific data sheet of REPT 314ah LiFePO4 battery cell:
Item | Specification | Comment |
Nominal Capacity | 314Ah | 25±2℃,0.5P/0.5P |
Nominal Voltage | 3.2v |
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Nominal Energy | 1004.8Wh | 25±2℃,0.5P/0.5P |
Operating Voltage | 2.5~3.65V | T>0°C |
2.0~3.65V | T≤0°C | |
Standard Charging Power | 502.4W | 25±2℃,0.5P |
Standard Discharging Power | 502.4W | 25±2℃,0.5P |
Working Temperature | Charge: 0℃~60℃ |
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Discharge: -20℃~60℃ |
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Storage Temperature | -30℃~60℃ |
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Dimension | Thickness: 71.7±0.8mm Width: 174.00±0.8mm Shoulder Height : 204.40±0.8mm Total Height : 206.80±0.8mm |
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Cathode Material | Lithium iron phosphate |
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Cell Weight | 5.78±0.2kg |
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Energy Density | 174Wh/kg |
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394Wh/L |
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Energy Efficiency | ≥94.0% | 25±2℃,0.5P |
IMP(1KHz) | 0.17±0.05mΩ | 40%SOC |
Shipping Capacity | 125.6±3Ah | 40%SOC |
Cycle Life | ≥8,000 cycles | The temperature is maintained at 25±2°C,cycle test by the standard charge and discharge method under 300±20Kgf preload,Fadingto70% of standard capacity. |
Maximum Continuous Charge Power | 0.5P | 25±2℃ |
Standard Charge Voltage | 3.65 |
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Standard Charge Mode | 0.5P constant power charge to 3.65V | |
Maximum Continuous Discharge Power | 0.5P |
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314Ah vs. 280Ah LiFePO4 Battery, what`s the Difference?
Simply put, the 314ah LiFePO4 battery is an upgraded version of the 280ah LiFePO4 battery. They are both lithium iron phosphate battery cells with the same nominal voltage and size, and are both used in energy storage systems. However, the 314ah battery has a larger capacity, a higher energy density, and can store more electricity. Each manufacturer’s battery products are slightly different, and some manufacturers have also upgraded the cycle life, making the 314ah battery have a higher cycle life.
Since 314ah battery cell and 280ah battery cell are the same size, this means that manufacturers do not need to readjust production lines and redevelop related energy storage products. They can directly use the original mature solution of 280ah battery cells for standardized large-scale production.
The two types of battery cells can use the same production line, which reduces the manufacturer’s production input and reduces costs. This makes the cost per kilowatt-hour of the 314ah battery slightly lower than that of the 280ah battery. At the same time, the 314ah battery cell can perfectly adapt to the 20-foot container energy storage system, upgrading it from the original 3 MWH of the 280ah battery cell to 5MWH. The system capacity is increased by about 35%, and the volume energy density is significantly improved, while the land area and construction costs can be greatly reduced.
From the perspective of market selection, 280Ah battery and 314Ah battery are currently in a very balanced stage. Some projects willing to make breakthroughs will choose 314Ah battery, while more conservative ones will choose 280Ah battery and reject new products.
Summary
The above is a comparison of 314ah batteries from battery manufacturers such as CATL, EVE, CALB, and REPT. We can compare the data and understand the product prices to choose the most suitable product for ourselves. However, please note that the above specifications are provided by the manufacturer for brand new A-grade batteries, so please distinguish them when choosing.
The latest data shows that by 2024, the global penetration of 300Ah+ energy storage battery cells, mainly 314Ah, will exceed 40%. It is understood that as of the first half of this year, CATL’s 314Ah battery cell shipments have reached several GWh; REPT is also increasing its 314Ah cell production capacity, and its production capacity will increase significantly in July and August; CALB’s monthly shipments of 314Ah cells are close to 3GWh, and the shipments in June will even exceed 3GWh.
With market verification and customer recognition, it is expected that 314ah LiFePO4 battery will be increasingly used in the energy storage market in the future!
