Drypower 12SB3PDrypower 12V 3Ah Sealed Lead Acid BatteryUsage and Composition Backup and Main Power Cyclic Use Sealed Lead Acid Battery Battery Specifications Voltage 12V Watt Hour 36.0Wh Nominal Capacity 3Ah Physical Dimensions Termination F1 (4.8mm Spade) Width 67mm Height 59.5mm Length / Breadth / Depth 134mm Weight 1300g