@dw but also that's a 3.7V battery in the shape of a AA?!
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@missed_sla @mschulkind That one is an 18650, however they do also make the 14500, which is exactly the AA form factor, there are actually a lot of flashlights that can take both 1.5v AA's and 3.7v 14500's. |
@mschulkind That's an 18650, significantly larger than AA. Many battery packs are just a bunch of these in a plastic shell. Notably Tesla batteries are just a huge group of them in a shell.