Does the Lyric Controller have Low Battery Detection

Yes the Honeywell Lyric controller is capable of detecting a low system battery "backup battery", the voltage threshold is 7.2vdc for the display and transmitted to central station. A battery may take up to 48 hours to fully charge so in the event your power goes out and your Lyric controller is running on its backup battery it may take some time for it to recharge once the power restores. Once the Lyric backup battery is fully recharged it will automatically clear your systems faults. 

*A low battery message will show if the battery voltage drops below 7.2VDC.