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EVE MB31 3.2V 314Ah LiFePO4 Prismatic Battery Cell (1004.8Wh)
The EVE MB31 314Ah LiFePO4 prismatic cell is a high-energy, long-cycle lithium iron phosphate battery designed for utility-scale BESS, C&I energy storage, and grid applications.
With 1004.8Wh nominal energy, 8000+ cycle life, and proven safety performance, MB31 is optimized for containerized ESS and large battery modules.
The EVE MB31 is a next-generation LFP prismatic lithium-ion cell manufactured by EVE Power Co., Ltd., engineered for high reliability, long service life, and stable performance in demanding energy storage environments.
Designed for 0.5P continuous operation, the MB31 cell delivers excellent energy efficiency, low internal resistance, and industry-leading safety characteristics.
Key Features & Benefits of EVE MB31 3.2V 314Ah LiFePO4
High Capacity: 314Ah nominal capacity
High Energy Density: 1004.8Wh per cell
Long Cycle Life: ≥ 8000 cycles @ 25°C, 70% SOH
Excellent Safety: No fire or explosion in abuse tests
Wide Operating Range: –30°C to +60°C discharge
Low Internal Resistance: ~0.18 mΩ (AC, 1kHz)
Optimized for BESS & ESS applications
Electrical Specifications for EVE MB31 3.2V 314Ah LiFePO4
| Parameter | Value |
|---|---|
| Cell Chemistry | LiFePO4 (LFP) |
| Nominal Voltage | 3.2 V |
| Nominal Capacity | 314 Ah |
| Nominal Energy | 1004.8 Wh |
| Charge Cut-off Voltage | 3.65 V |
| Discharge Cut-off Voltage | 2.5 V (>0°C) / 2.0 V (≤0°C) |
| Standard Charge/Discharge Power | 0.5P (502.4 W) |
| Max Continuous Power | 0.5P |
| Internal Resistance | 0.18 mΩ ± 0.05 mΩ |
EVE MB31 3.2V 314Ah LiFePO4 Physical Specifications
| Parameter | Value |
|---|---|
| Dimensions (H × L × T) | 207.2 × 173.7 × 71.7 mm |
| Weight | 5.6 kg ± 0.3 kg |
| Terminal Center Distance | 123 mm |
| Cell Format | Prismatic Aluminum Shell |
Operating Conditions
| Condition | Range |
|---|---|
| Charging Temperature | 0°C to 60°C |
| Discharging Temperature | –30°C to 60°C |
| Storage Temperature (1 year) | 0°C to 35°C |
| Recommended Storage SOC | 30% – 40% |
Cycle Life & Performance
≥ 8000 cycles at 25°C (0.5P charge / discharge)
Energy efficiency: ≥ 93.5% at 0.5P
High-temperature retention: ≥ 98% @ 45°C
Low-temperature performance: ≥ 80% capacity @ 5°C
Safety & Compliance
The EVE MB31 cell has passed all standard safety tests, including:
Over-charge
Over-discharge
External short circuit
Crush & drop test
Thermal runaway
Heating & low-pressure tests
Result: No fire, no explosion.
Safety compliance applies at cell level. System-level compliance depends on module and BMS design.
Typical Applications
Containerized ESS
Utility-scale grid storage
Renewable energy integration
Power peak shaving systems
Additional Information
| Chemistry | LiFePO4 (LFP) |
|---|---|
| Manufacturer | EVE Power |
| Model | MB31 |
| Nominal Voltage | 3.2V |
| Capacity | 314Ah |
| Energy | 1004.8Wh |
| Max Continuous Power | 0.5P |
| Standard Charge/Discharge Power | 0.5P (502.4 W) |
| Charge Cut-off Voltage | 3.65 V |
| Discharge Cut-off Voltage | 2.5 V (>0°C) / 2.0 V (≤0°C) |
| Internal Resistance | 0.18 mΩ ± 0.05 mΩ |
| Operating Temperature | –30°C to +60°C |
| Cycle Life | 8000+ cycles |
| Cell Type | Prismatic |
| Weight | 5.6 kg ± 0.3 kg |
| Dimensions (H × L × T) | 207.2 × 173.7 × 71.7 mm |