I didn't have to look far to replace my combo CO/Smoke detector or do a ton of hard searching to find one that just took a 9-volt. The first two results on Amazon US for "smoke detector" take 9-volts.
Re:Hosting a website on a disposable vape
by Someone1234 on Monday September 15, 2025 @12:39PM
(#45251828)
> The first two results on Amazon US for "smoke detector" take 9-volts.
I did the same thing, and the first four results were Kidde and First Alert Smoke Alarms with non-replaceable 10-year lifespan batteries.
It is likely because you recently purchased one, and Amazon has targeted your results based on your purchase history.
If you go look at modern smoke detectors, many-to-most, now have a non-replaceable battery for exactly that reason.