Technical characteristics: Number of elements: 6 Voltage: 12 V Nominal capacity: 9 A / h at 20 year discharge up to 1.75 V per element at 25 ° C Weight: 2.1 kg (Tolerance ± 5.0%) Internal support: 18 mOhm Terminal type: F2 Maximum discharge current: 90 A (5 seconds) Short-circuit current: 450 A Attachment term: 7 years Recommendations maximum charging current: 2.7 A Charge voltage in buffer mode: 13.7 V ~ 13.9 V at 25 ° C Temperature compensation: -3 mV / ° C / element Charge voltage in cyclic mode: 14.6 V ~ 14.8 V at 25 ° C elementOperating temperature range: Discharge: 10°C ~ 60°C Charge: 10°C ~ 50°C Charge: 10°C ~ 50°C Normal operating range: 10°C ~ 60°C temperatures: 25 ± 5 °C Housing material: A.B.S. UL94-HB, UL94-V0 self-charging: AGM regulated lead acid (VRLA) battery can be stored for up to 6 months at 25°C, after which recharging is recommended. The seven-month self-discharge coefficient becomes less than 3% at 25 ° C. Please, charge the batteries before using the batteries.'