GP645 
| Cells Per Unit | 6 |
| Voltage Per Unit | 12 V |
| Capacity | 24.5W @15Min-rate to 1.67V per cell @ 25°C (77°F) |
| Weight (kg) | Approx. 1.84 Kg (4.06 lbs) |
| Maximum Discharge current (A) | 100/130A (5 Sec) |
| Internal Resistance Approx. | Approx. 25.8 mΩ |
| Operating Temperature Range | Discharge：-15℃~50℃(5°F~122°F) Charge：-15℃~40℃(5°F~104°F) Storage：-15℃~40℃(5°F~104°F) |
| Nominal Operating Temperature Range | 25℃±3℃(77°F±5°F) |
| Float charging voltage | 13.5 to 13.8 VDC/Unit Average at 25℃ (77°F) |
| Recommended Maximum Charging current limit | 2.5A |
| Equalization and Cycle Service | 14.4 to 15.0 VDC/Unit Average at 25℃(77°F) |
| Self Discharge | It should be more than 75% of the capacity that before storage after stocked for 6 months at ambient temp. 25℃ |
| Terminal | F1/F2-Faston Tab187/250 |
| Container Material | ABS(UL94-HB) & Flam retardant(UL94-V0) available upon request. |