No one wants to realize once the inspector arrives or after their business has a fire that their panel is malfunctioning due to low or no battery life.
Fire alarm battery replacement.
Using simplex fire alarm replacement batteries for your fire alarm system panel is paramount to its operation during an emergency and can even lead you to trouble with code enforcement if overlooked.
If you have an ac hardwired interconnected alarm you will need to remove the quick connect wire harness from the back.
Replace the backup battery in a hard wire unit yearly whether it beeps or not.
Mark the date you changed your battery on the inside of the smoke alarm.
A good rule of thumb is to change.
Fire safety experts recommend you replace your smoke alarm battery two times a year.