| Item | Specification |
|---|---|
| Model | INR21700-50E |
| Normal Capacity | 5000mAh @0.2C |
| Minimum Capacity | 4900mAh @0.2C |
| Normal Voltage | 3.7V |
| Charging Voltage | 4.2V |
| Standard Charging Method | CC-CV (0.5C, 4.2V, 0.05C Cut-off) |
| Standard Discharge Method | CC (0.2C, 2.5V) |
| Discharge Cut-off Voltage | 2.5V |
| Max Charge Current | 1C (Not For Cycle) |
| Maximum Continuous Discharge Current | 3C |
| Internal Resistance | ＜ 30mΩ(ACIR) |
| Cycle Life | +0.5C/-1C Cap(800th)/Cap (Av10)≥80% |
| Operating Temperature (Surface Temperature) | Charge: 0 to 50°C / Discharge: -20 to 60°C |
| Weight | ≤74g |
| Cell Dimension | D:21.50 mm±0.20 mm H: 70.75 mm±0.20 mm |
| Storage Temperature | 1 year: -20~25℃ ≤70%RH 3 months: -20~45℃ ≤70%RH 1 month: -20~60℃ ≤70%RH |
The capacity comparison under different temperatures was tested: After standard charging, the battery was discharged at a constant current of 0.2C until the cut-off voltage of 2.5V. The obtained capacity data are shown below.
| Discharge Temperature | ||||
|---|---|---|---|---|
| -20℃ | -10℃ | 0℃ | 25℃ | 60℃ |
| ≥65% | ≥75% | ≥80% | 100% | ≥98% |
Discharge capacities of the cell at 25°C after standard charging, obtained by discharging to 2.5V with varying currents as specified in the table below:
| Current | 0.2C | 0.5C | 1C | 2C | 3C |
| Relative Capacity | 100% | ≥95% | ≥93% | ≥90% | ≥88% |
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