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| Parameter | Specification | Parameter | Specification |
|---|---|---|---|
| Manufacturer | misenpower | Model | 40140LFP-MP20Ah |
| Chemistry | Lithium Iron Phosphate (LiFePO4) | Cell Type | 40140 power-type cylindrical cell |
| Nominal Voltage | 3.2V | Nominal Capacity | 20Ah at 25±2°C, 0.5C/0.5C |
| Nominal Energy | Approx. 64Wh, calculated | Energy Density | 156Wh/kg |
| Dimensions | Ø40.5±0.2mm top, Ø40.2±0.2mm body × 140±0.5mm height, with PET sleeve | Cell Weight | 410±5g including packaging |
| Operating Voltage | 2.0–3.65V | AC Internal Resistance | 1.0mΩ ≤ IR < 3.0mΩ at 1kHz and 30% SOC; batch SD ≤0.2mΩ |
| Standard Charge | 0.5C CC/CV to 3.65V, 0.05C cut-off | Maximum Continuous Charge | Up to 1C / 20A at 20–45°C; reduced current outside this range |
| Fast-Charge Time | 30 minutes from 30% to 80% SOC at 25°C | Charge Temperature | 0–60°C; optimum 15–40°C |
| Standard Discharge | 0.5C constant current to 2.0V | Continuous Discharge | 2C / 40A at 15–45°C |
| Pulse Discharge | 5C / 100A for 10 seconds at 15–45°C | Discharge Temperature | -30–60°C |
| Standard Cycle Life | ≥2500 cycles to 80% SOH at 25±2°C, 0.5C/0.5C | Fast-Charge Cycle Life | ≥3000 cycles to 70% SOH at 25±2°C, specified fast charge / 1C discharge |
| Storage Temperature | -20–45°C up to 3 months; 10–25°C up to 6 months | Shipping SOC | 20–30% SOC or customer-agreed condition |
The Funeng 40140LFP-MP20Ah is a power-oriented 40140 cylindrical LiFePO4 cell rated at 3.2V and 20Ah, providing approximately 64Wh of nominal energy. Its verified 40A continuous output, 100A 10-second pulse capability, controlled fast-charge window and long cycle targets support demanding pack designs. The cell is intended for engineered battery systems with appropriate current limits, thermal monitoring, mechanical protection and manufacturer-approved applications.
Rated at 3.2V and 20Ah, the cell stores approximately 64Wh based on nominal values. A specified energy density of 156Wh/kg and 410±5g packaged weight provide a clear basis for pack capacity, mass and parallel-string calculations. Nominal capacity is measured at 25±2°C using 0.5C charging and discharging conditions.
A verified 2C maximum continuous discharge rating enables up to 40A per cell between 15°C and 45°C. This power capability helps reduce the number of parallel cells required in current-demanding designs while supporting predictable electrical and thermal calculations. Pack engineering must keep each cell within its voltage, current and surface-temperature limits.
For short power demands, the cell supports a specified 5C pulse discharge of 100A for up to 10 seconds at 15–45°C. This makes the 40140LFP-MP20Ah suitable for professionally controlled acceleration, starting or transient-load events. The rating must not be treated as continuous, and the BMS should enforce both duration and recovery limits.
The specification records a 30-minute fast-charge interval from 30% to 80% SOC at 25°C. Standard charging uses 0.5C CC/CV to 3.65V with a 0.05C cut-off, while temperature-dependent continuous charging reaches 1C at 20–45°C. The complete proprietary fast-charge current profile should be confirmed before charger or BMS programming.
The permitted discharge temperature range extends from -30°C to 60°C. At 0°C, specified capacity is at least 85% of the 25°C result; at -10°C, it is at least 75% under the stated test conditions. AC internal resistance is specified below 3.0mΩ at 1kHz and 30% SOC for controlled batch integration.
Under standard 0.5C charge and discharge testing at 25±2°C, cycle life is specified at no fewer than 2,500 cycles to 80% SOH. A separate manufacturer-defined fast-charge program is specified for at least 3,000 cycles to 70% SOH with 1C discharge. Actual pack life depends on temperature, SOC window, current and balancing quality.
Custom battery pack applications: The Funeng 40140LFP-MP20Ah can support manufacturer-approved mobility, robotics, industrial-equipment and stationary energy-storage systems. Misenpower supplies cells and supports custom pack integration with a matched BMS, fuse protection, welded interconnects, voltage and temperature sensing, electrical insulation, cell spacing, and suitable thermal and mechanical design. Supporting CE, UN38.3, RoHS and UL documentation can be provided for the applicable product and shipment; scope and validity should be confirmed before ordering.
