"I'm trying to remember life before . I used to misplace a lot of stuff, and I've accumulated more than a few gray hairs after frantically tearing my couch apart looking for keys. That's now a thing of the past, and I have AirTags on anything important that can get lost: keys, wallets, suitcases -- even my bike. Also: I extended my AirTag's battery life to 10 years with this $15 accessory - how it works"
"After all, cells are the same size as CR2032 cells, and they'll fit into the same battery slot. Surely they're the same, right? Wrong. Regular, disposable CR2032 cells have a nominal voltage of 3V and a power capacity of 240mAh. LIR2032 might look the same, but these have a higher nominal voltage of 3.6V and a much lower 40mAh capacity -- that's six times less. There are higher capacity rechargeable cells called , but these still only have about 70mAh."
AirTags commonly use CR2032 disposable button cells with nominal voltage 3V and capacity about 240mAh. LIR2032 Li-ion rechargeable cells physically match CR2032 size but have nominal voltage 3.6V and much lower capacity around 40mAh. Some higher-capacity rechargeable alternatives reach about 70mAh, still far below CR2032 capacity. Replacing CR2032 with LIR2032 leads to substantially more frequent battery replacements — roughly every two to three months instead of annually. The higher voltage and chemistry differences can damage devices such as AirTags. Businesses using AirTags to track keys experienced cost and waste concerns when switching to rechargeables.
Read at ZDNET
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