| Item | Specification |
|---|---|
| Model | INR18650-26E |
| Normal Capacity | 2600mAh @0.2C |
| Minimum Capacity | 2500mAh @0.2C |
| Normal Voltage | 3.65V |
| Charging Voltage | 4.2V |
| Charging Method | CC-CV (0.5C, 4.2V, 0.05C Cutoff) |
| Standard Charging Current | 0.5C |
| Discharge Cutoff Voltage | 2.75V |
| Standard Discharge Current | 1C |
| Max Discharge Current | 3C |
| Internal Resistance | ＜25mΩ(ACIR) |
| Cycle Life | +0.5C/-1C Cap(1000th)/Cap (Av10) ≥80% |
| Operating Temperature (Surface Temperature) | Charge: 0 to 50°C / Discharge: -20 to 60°C |
| Weight | ≤47g |
| Cell Dimension | D:18.25 mm±0.20 mm H: 64.95 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 1C until the cutoff voltage of 2.75V (Constant current discharge to 2.5V cutoff at -20℃). The obtained capacity data are shown below.
| Discharge Temperature | |||||
|---|---|---|---|---|---|
| Charge Temperature | -20℃ | -10℃ | 0℃ | 25℃ | 55℃ |
| Relative Capacity | ≥70% | ≥75% | ≥80% | 100% | ≥90% |
Discharge capacities of the cell at 25°C after standard charging, obtained by discharging to 2.75V with varying currents as specified in the table below:
| Current | 0.5C | 1C | 2C | 3C |
| Relative Capacity | 100% | ≥95% | ≥90% | ≥85% |
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