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Fire Alarm Standby Battery Sizing
Size fire alarm standby batteries to BS 5839-1: device/panel quiescent and alarm current schedule to required Ah capacity and standard battery size.
The Ensign ToolboxFire Alarm Standby Battery SizingSize fire alarm standby batteries to BS 5839-1: device/panel quiescent and alarm current schedule to required Ah capacity and standard battery size.
Standby assumptions
Category L/M/P duration matrix
h
Annex D/E; usually 1.75
Ah
Check an existing/proposed battery against the requirement
Device / panel schedule
No devices added yet
Add a device/panel row to calculate