When Should Smoke Detector Batteries Be Replaced. Look on the back of the device for the date of manufacture. If you have a of the classic smoke detector make sure to change the battery every year.
Fire Administration USFA smoke detectors should be tested at least once a month and batteries should be replaced at least once or twice a year. For 10-year lithium-powered fire detectors you wont need to replace the battery. You have installed those smoke alarms in order to.
If you have a newer alarm your battery may be good for ten years thanks to the use of newer lithium batteries.
You may be able to get a free smoke detector and. Smoke detector batteries should all be replaced at the same time every 6 months. If your smoke alarm uses a lithium battery it is inbuilt into the alarm and cannot be replaced. They are hard-wired into our electrical system but that doesnt mean.
