Replacing the smoke detector battery could give you the seconds you need to survive a house fire. You may only have seconds to escape, which is why it is so important. It is recommended that you replace the batteries in your smoke detectors once a year or sooner. I usually replace them in October because that is when Fire Prevention Week occurs in the USA. But you choose a time that you can reliably remember to replace them.
Before you purchase a battery check the type of battery or batteries that it needs. Some use Lithium Ion, others use AA or AAA batteries. And some even have a non-replaceable battery and you must replace the entire smoke detector.
In this video, I’m replacing the battery with a 9V Duracell from a pack that I bought. I keep spare 9V batteries on hand as I need them for my electronic devices like my digital multimeters and stud finders. I also keep them on hand so that at 3AM in the morning when it starts chirping I can replace it. Otherwise, I would have to disconnect the smoke detector.
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