Standby Battery Calculation The following formula can be used to calculate the appropriate standby battery size: C min = [(I1 x T1) +I2] x 1.25 Definitions and example of the above I1 (Standby current from the fire alarm panel) = 0.05 Amps T1 (Standby time, assume category L1) = 24 Hours I2 (Full alarm current from panel) = 0.3 Amps. All fire alarm systems must be fitted with a standby supply and this is achieved by using Sealed Lead Acid (SLA) batteries.. The standards state that in the event of a mains supply failure, the backup batteries should be able to run the system for a minimum of 24hrs, followed by 30minuites in full alarm condition (all sounders running).
Battery Size Calculator tool, available to use online. Free and accurate. info@safe-group.co.uk +44 (0) 800 0471 999; SAFE Divisions. SAFE Group Security & Fire Experts. Fire Detection and Alarm Systems Emergency Lighting Electronic Security Solutions.. Download all of Fire-Lite's battery calculators. < Back to Building Automation |. FL-PS_Battery_Calculator.zip. Download File Multiple Download been Selected. PRODUCTS. toggle view. Product Overview;. Fire-Lite Alarms One Fire Lite Place Northford, CT. 06472. Phone: 203.484.7161.