Drypower 12SB2.9PRDrypower 12V 2.9Ah Sealed Lead Acid BatteryUsage and Composition Backup and Main Power Cyclic Use Sealed Lead Acid (SLA) Battery Specifications Voltage 12V Watt Hour 34.8Wh Nominal Capacity 2.9Ah Physical Dimensions Termination F1 (4.8mm Spade) Width 56mm Height 99mm Length / Breadth / Depth 79mm Weight 11.9Kg