Specifications: Number of cells: 6 Voltage: 12 V Nominal capacity: 7.2 Ah at 20 hour discharge to 1.75 V per cell at 25 ° C Weight: 2.035 kg (Tolerance ± 5.0%) Internal resistance: 25 mΩ Terminal type: F2 Maximum discharge current: 72 A (5 seconds) Short-circuit current 260 A Shelf life: 7 years Maximum charging current: 2.1 A Float charging voltage: 13.7 V ~ 13.9 V at 25 ° C Temperature compensation: -3 mV / ° C / cell Cyclic charging voltage: 14.6 V ~ 14.8 V at 25 ° C Temperature compensation: -4 mV / ° C / Element Operating Temperature Range: Discharge: 10°C~60°C Charge: 10°C~50°C Storage: 10°C~60°C Normal Operating Temperature Range: 25±5°C Case Material: A.B.S. UL94-HB, UL94-V0 Self-Discharge: Rechargeable Agm lead acid (VRLA) battery can be stored for up to 6 months at 25°C, and then recharging is recommended. The monthly self-discharge rate is less than 3% at 25°C. Please charge the batteries before use.