this post was submitted on 02 Dec 2023
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Unfortunately, yes.
I've had multipe experiences with seeing a flashlight battery which, according to labels, ought to have the capacity of an electric vehicle cell. And of course they don't - on EBay or AliExpress, there's a 100% chance that they're just deceptively labeled. :)
If one needs high current, measuring the current with a known and low resistance (e.g. car headlight bulb) helps.