Nominal voltage: 12V Nominal capacity: 260Ah Overall height: 226mm Height: 218mm Width: 268mm Length: 522mm Weight: 64.0kg (141.1lbs) ± 3% Capacity (at 25 ° C) 20h (10.5V): 260Ah Capacity (at 25 ° C) 10h (10.5V): 251Ah Capacity (at 25 ° C) 3h (10.2V): 189Ah Capacity (at 25 ° C) 1h (9.6V): 150Ah Internal resistance (at 25 ° C): 2.1mΩ Capacity: (40 ° C): 102% Capacity (25 ° C): 100% Capacity (0 ° C): 85% Capacity (-15 ° C): 65% Self discharge (25 ° C) 3msc: 91% of nominal capacity Self discharge (25 ° C) 6msc: 82% of nominal capacity Self discharge (25 ° C) 12msc: 64% of nominal capacity Recommended operating temperature: 25 ° C ± 3 ° C Operating temperature range - discharge: -15 ° C to 50 ° C Operating Temperature Range - Charging: -10 ° C to 50 ° C Working temperature range - storage: -20 ° C to 50 ° C Buffer charging voltage (25 ° C): 13.5VDC-13.8VDC Cyclic charging voltage (25 ° C): 14.4VDC-14.7VDC Maximum charging current: 65A Maximum discharge current: 2500A Design life (25 ° C): 12 years