Battery Size Calculator

This calculator provides an initial estimate of the battery capacity required to power a system for 24 hours or 72 hours on Standby plus 30 minutes on Alarm (see note). To begin, select the main system component from the options below:





Auxillary PSU

FAAST Detectors


Note: This calculation is valid only if the average battery operating temperature is between 15 °C and 30 °C, and if the PSU failure signal is externally monitored. Please refer to Australian Standard AS 1670.1:2015 section 3.16.6