How Often Should You Change The Batteries In Smoke Detectors. I have two homes equipped with hard-wired smoke alarms original equipment now about 17 years oldThe alarms respond appropriately to the test buttons. Reset the Smoke Detector.
Simply remove the old battery and install the new one. If youre using a typical nine-volt battery youll need to change the smoke alarm batteries at leastonce every year although many experts recommend changing them twice a year. But the instructions on a battery.
Pick a date like a birthday or the change to daylight-savings time and make sure all of the smoke detector batteries in the home are replaced.
Just press the test button and if you hear an alarm youre protected. You may have to remove the entire device from the wall to get the cover off. Turn off the power to the smoke detector at your circuit breaker. Lithium batteries are better for use in smoke detectors.
