18650 HE4 Battery Specifications
| Item | Parameters | Remark |
|---|---|---|
| Model | 18650/HE4 | — |
| Rated Capacity | 2500mAh | Standard discharge (0.2C) after standard charge |
| Nominal Voltage | 3.7V | — |
| Voltage at End of Discharge | 2.75V | Discharge cut-off voltage |
| Charging at End Voltage | 4.20V | — |
| Standard Charge | CC 0.2C / CV 4.20V / Cut-off 0.02C | Charge time approx. 6.0h |
| Standard Discharge | 20A | — |
| Fast Charge | CC 1C / CV 4.20V / Cut-off 0.02C | Charge time approx. 2.5h |
| Fast Discharge | CC 1C / End Voltage 3.0V | — |
| Cycle Life | 2000 cycles (100% DOD) 4000 cycles (80% DOD) 7000 cycles (50% DOD) |
Residual capacity ≥80% of rated at 1C rate |
| Operating Temperature | Charge: 0–55°C / Discharge: -20–60°C | 60±25% R.H., bare battery |
| Storage Temperature | <1 year: -20–25°C <3 months: -20–45°C |
60±25% R.H., at shipment |
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