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Do battery operated smoke alarms expire?

Frank99 · 2022-12-23 14:14:17

I have three battery alarms operated by rechargeable 9v batteries, is it true that i should change them even if they work, i thought it was just the sealed lithium ones that needed changing. One of my alarms is going sounding in the night for no reason so could be a sign, i purchased them in 1997 so maybe i need to switch…

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Myser Posts: 1,907 Forumite

25 December 2022 at 7:50PM

Frank99 said:

I have three battery alarms operated by rechargeable 9v batteries

As others have said, it's time to replace the alarms.

Also, unless mentioned by the manufacturer you should not use rechargeable batteries in alarms as the primary power source. Lithium or Alkaline are preferred.

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