12V 400Ah LiFePo4 Battery
12.8V 400Ah Lithium Iron Phosphate Battery (LiFePO4) is an efficient, safe and long-life lithium ion battery. It is used in various energy storage devices. Except the basic function, the lithium battery pack allows to add bluetooth, LCD screen and self heating functions.
12.8V 400Ah Battery Specs
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Work Voltage Range 10.8~14.6V
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Nominal Voltage 12.8V
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Nominal Capacity 400Ah
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Rated Energy 5120Wh
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Max Discharge Power 640W
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Standard Charge Current 20A
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Recommend Charge Current ≤50A
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Max Charge Current 50A
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Recommend Discharge Current ≤50A
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Max Continue Discharge Current 50A
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Peak Discharge Current (10S) 100A
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Resistance ≤12mΩ
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Lifespan (25℃,0.5C,80%DOD) >6000
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Waterproof IP65
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Weight 40Kg
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Size (Length * Width * Thick) 522*240*218mm
Hongyitai Batery Perofrmance Curve
12V 400Ah Lifepo4 Battery Charge & Discharge Curve
Left images are 12.8V 400Ah battery open circuit voltage & SOC.
Different temperature discharge chart.
Different discharge rate chart.
Different DOD cycle life curve.
Charging characters at 0.2C & 0.5C.
Charge characteristics.
12V 400Ah lifepo4 battery applications
Off-Grid and Solar Systems: Provides reliable energy storage for residential or commercial solar systems.
Recreational Vehicles (RV): Self-heating capabilities allow these batteries to operate effectively in cold weather. They can power appliances, lighting, and entertainment systems.
Industrial Use: In industrial settings, these batteries can support forklifts and AGVs, providing powerful power support.
How we manfuacture 12V 400Ah lifepo4 lithium battery
- Matching set of high quality LiFePO4 cells. For a 12V 400Ah battery, you will need 4 cells in series, each with a nominal voltage of 3.2V and a capacity of 400Ah.
- Series the cells in series positively to each other to achieve a nominal voltage of 12.8V. Connect the batteries using nickel strips and a spot welder.
- Install a battery management system (PCM) to prevent overcharging, over-discharging and short circuit protection. Select a BMS with a nominal voltage of 12V and a continuous current of at least 100A.
- Solder the protection plate in the P+,P- position.
- Sheet metal enclosure to house the battery and BMS. cells and batteries need to be insulated.
- Install terminal connectors, fuses and any monitoring displays.
- Perform initial charge/discharge and testing to verify proper operation and capacity.
FAQs for 12V 400Ah deep cycle battery
The total energy of a 12.8V 400Ah battery is: 12.8V * 400Ah = 5,120Wh.
Assuming the power of the air conditioner is 1600 watts, the power supply duration is: 5120Wh / 1600W = 3.2H.
You need to consider several factors, including battery power, charging efficiency, and sunshine hours.
12.8V 400Ah battery total energy: 12.8V * 400Ah = 5120Wh.
Assuming the overall conversion efficiency is 80%, 5120Wh / 80% = 6400Wh.
If there are 5 hours of effective sunshine per day, the required solar panel power is: 6400Wh / 5H = 1280W.
If you choose a 200W solar panel, the number of panels required is: 1280W / 200W = 6.4. So it is recommended to install 7 solar panels.
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We will get back to you within 1 working day. Each batteries can be provided 5 year warranty.
