How To Check Smoke Alarm Battery. After the battery is installed and the smoke detector is mounted on its bracket you will hear a chirp which indicates the unit is receiving battery power. Once your battery is replaced you still have one last important step.
Step 2 Swap the Battery. The last battery you replaced in your smoke detector has lasted less than 1 year. If theres no expiry date its best to replace the alarm.
Reconnect the power and reinstall the battery.
Once you remove the cover of the detector its easy to see how to change a smoke alarm battery. The last battery you replaced in your smoke detector has lasted less than 1 year. Every alarm model has a different way of doing this but normally you either turn the alarm. If you want to test the smoke sensor purchase canned smoke and spray the smoke at the detector.
