Specifications: Number of cells: 6 Voltage: 12 V Nominal capacity: 7.5 Ah at 20 hour discharge to 1.75 V per cell at 25 ° C Weight: 2.075 kg (Tolerance ± 5.0%) Internal resistance: 25 mΩ Terminal type: F2 Maximum discharge current: 75 A (5 seconds) Short-circuit current 260 A Shelf life: 7 years Maximum charging current: 2.25 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 Shell material: A.B.S. UL94-HB, UL94-V0