- Nominal voltage: 12.8V
- Nominal capacity: 21Ah
- Internal resistance: ?100m?
- Dimensions: 210×115×72mm
- Charge voltage: 14.4V
- Charge current: 2.1A
- Charge method: CC/CV
- Discharge current: 2.1A
- Discharge cut-off voltage: 8V
- Operating temperature:
- Charging temperature: 0-45°C
- Discharging temperature: -20-60°C
- Storage temperature:
- 1 month: -20-60°C
- 3 month: -20-45°C
- 1 year: -20-25°C
- Relative humidity: 65 ±20% RH