How Often Should Smoke Alarm Batteries Be Changed. Ad Affordable Prices Broad Selection Freshness Guaranteed. Fast Shipping Unbeatable Service.
Smoke alarm powered by a 10-year lithium or long-life battery. Also alarms have labels showing when they were made. Because alarm sensors wear out replace each alarm at least every 10 years.
There is an exception to the every-year rule.
How Often To Replace Battery In Hard Wired Smoke Detector. You can often determine the date your smoke alarm was manufactured by checking the back of the alarm where manufacturers often print the. Many smoke and carbon monoxide detectors use a 9v battery. In the past when smoke detectors ran solely on batteries it was advised to change out the batteries in the smoke alarms twice a year.
