Drypower 6SB12PDrypower 6V 12Ah Sealed Lead Acid BatteryUsage and Composition Backup and Main Power Cyclic Use Sealed Lead Acid (SLA) Battery Specifications Voltage 6V Watt Hour 72.0Wh Nominal Capacity 12Ah Physical Dimensions Termination F1 (4.8mm Spade) Width 50mm Height 94mm Length / Breadth / Depth 151mm Weight 1840g