Joel Michael on Nostr: Oh, remember those USB-rechargeable 9V batteries I bought a while ago? Yeah, ...
Oh, remember those USB-rechargeable 9V batteries I bought a while ago?
Yeah, definitely DO NOT use them in a smoke alarm. They go from 9V to 0V as soon as the internal cell’s under-voltage cutoff is hit. A real 9V battery slowly loses voltage as it discharges, the smoke alarm monitors this and makes annoying beeping noises when the battery voltage goes under a threshold.
⚠️ Going from 9V straight to 0V gives you a dead smoke alarm with no warning ⚠️
Yeah, definitely DO NOT use them in a smoke alarm. They go from 9V to 0V as soon as the internal cell’s under-voltage cutoff is hit. A real 9V battery slowly loses voltage as it discharges, the smoke alarm monitors this and makes annoying beeping noises when the battery voltage goes under a threshold.
⚠️ Going from 9V straight to 0V gives you a dead smoke alarm with no warning ⚠️