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 ⚠️
Joel Michael /
npub1nq…ujqtk
2024-08-08 04:28:34
Author Public Key
npub1nqxuqdql5vg28e624hu4p7md38yf47ssvzwadpat05ls2a8kakrsgujqtkPublished at
2024-08-08 04:28:34Event JSON
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"content": "Oh, remember those USB-rechargeable 9V batteries I bought a while ago?\n\nYeah, 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. \n\n⚠️ Going from 9V straight to 0V gives you a dead smoke alarm with no warning ⚠️",
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