31136 LiFePO4 Battery Cell (3.2V 75Ah)

31136 Battery Cell is lightweight prismatic aluminum shell lithium battery that uses lithium iron phosphate material and is made by lamination process. This battery cell is a power battery, supports continuous 1C charging and 3C discharge. The cycle life exceeds 3,000 times. We can also customize battery packs of various sizes and performances according to your needs.

  • Model: 31136-75Ah
  • Product Dimensions: 31x136x220mm
  • Weight: 1770g
  • Cathode Material: LFP
  • Nominal Voltage: 3.2V
  • Nominal Capacity: 75Ah
  • Cut-off Discharge Voltage: 2.5V
  • Maximum Charge Voltage: 3.65V
  • Maximum Discharge Rate: 3C
  • Charging Method: CC/CV
  • Cycle Life: >3000
  • Operating Temperature: Charging 0°C to 55°C; Discharging -20°C to 60°C
  • Application Range: LEV, Golf cart, Residential ESS, AGV, Industrial applications, etc.
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Product details

  • Anode: Double rivet pressing design, patented micro-tooth copper-aluminum composite structure, stable and easy to process; High precision extrusion and cold drawing process, low cost.
  • Cathode: High efficient integrated design with patented negative pressure sealing structure; Side welding laser sealing process, high welding yield and low laser welding leakage rate;
  • Safety Valve: Ensure cells internal pressure released out to avoid extreme if needed.
  • Lamination Process: Cell foil plates with lamination process for low internal resistance and heat dispation.
    High efficient integrated design, advanced technology and low manufacturing cost.

FAQ

31136 LiFePO4 cells are suitable for energy storage systems, electric trucks, electric forklifts, ship power supplies and other applications that require high capacity and high cycle life. Its high performance characteristics make it widely used in industrial and commercial scenarios.

  • Nominal voltage: 3.2V
  • Capacity: 75Ah
  • Size: 31136 appearance design, easy to assemble
  • Discharge rate: supports 1C continuous discharge, instantaneous discharge can reach 3C
  • Cycle life: more than 2000 charge and discharge cycles
  • Operating temperature range: -20°C to 60°C

You can choose series or parallel connection according to application requirements:

  • Series connection (such as 16S) can form a 51.2V energy storage system to meet high voltage requirements
  • Parallel connection can increase capacity and meet the needs of long-term power supply
  • High-quality connection technology should be used during assembly, and an adapted BMS (battery management system) should be equipped to ensure the safety and reliability of the battery pack.

Yes, this battery supports 1C continuous discharge and 3C instantaneous discharge, which can meet the startup and operation requirements of high-power equipment such as electric forklifts and electric ships.

When assembling the battery pack, high-quality connection materials must be used, the consistency of the battery cells must be strictly controlled, and a fully functional BMS must be equipped. We recommend safety testing after assembly, including overcharge, over-discharge, over-temperature and short-circuit tests.

Yes, the 31136 battery is optimized for an operating temperature range of -20°C to 60°C. For extremely cold or hot environments, a specific formula of electrolyte can be customized, or a temperature control system can be added to ensure the performance of the battery cell.

Yes, the 31136 battery cell has passed the following certifications:

  • UN38.3: International transportation safety certification
  • CE: EU market certification
  • IEC62619: Safety certification for energy storage and industrial applications

Yes, we can provide the following customized services according to customer needs:

  • Battery capacity and voltage adjustment (such as 48V 100Ah battery pack)
  • Customized shell materials, providing waterproof, dustproof and shockproof design
  • Intelligent BMS system integration, supporting remote monitoring and real-time data transmission

This battery cell is very suitable for home energy storage, commercial energy storage and solar energy system applications. It supports deep discharge and efficient charging, which can maximize the utilization of solar energy.

Under normal use conditions, the 31136 LiFePO4 battery cell can provide more than 3000 deep charge and discharge cycles, and the battery pack life can reach more than 5 years.

Yes, 31136 cells support high-rate charging, with a maximum charge rate of 1C (75A), which can be fully charged in a short time.

31136 cells have a high consistency and standardized design, which is very suitable for modular assembly and can be expanded to higher voltages and capacities.

Absolutely. This cell supports high-rate discharge and fast charging, which is particularly suitable for the power requirements of electric vehicles, such as electric forklifts, electric ships, etc.

  • Avoid deep discharge, it is recommended to keep the power within the range of 50%-60%
  • Regularly check the BMS status of the battery pack
  • When stored for a long time, recharge once every 3 months
  • The storage environment is recommended to be controlled in a dry environment between -10°C and 30°C

The standard minimum order quantity is 50. If a customized battery pack is required, the MOQ can be adjusted according to specific needs.

31136 batteries are suitable for environments as low as -20°C. If you need to operate at lower temperatures, we can provide heating components and specific low-temperature solutions to ensure the stable performance of the battery in extremely cold conditions.

Yes, we can integrate an intelligent BMS system to monitor the battery status in real time, including voltage, current, temperature, etc., to ensure safety and extend life.

Yes, we provide comprehensive technical support, including:

  • Battery pack design and configuration consultation
  • BMS selection and commissioning services
  • Installation guidance and after-sales support

The charging time depends on the battery capacity and the charger power. When using a 100A charger, a 100Ah battery takes about 1 hour to fully charge.

The 31136 battery cell has high energy density and excellent energy storage performance. It can efficiently store and release energy, making it very suitable for home and commercial energy storage applications.

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