Drypower 6SB5PDrypower 6V 5Ah Sealed Lead Acid BatteryUsage and Composition Backup and Main Power Cyclic Use Sealed Lead Acid (SLA) Battery Specifications Voltage 6V Watt Hour 30.0Wh Nominal Capacity 5Ah Physical Dimensions Termination F1 (4.8mm Spade) Width 47mm Height 102mm Length / Breadth / Depth 70mm Weight 820g