• Avatar_of_Self@lemmy.world
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    5 months ago

    a stack of 18650s

    (you probably already know) but this is common in a lot of battery packs. Batteries for power tools are good sources for the 18650s too. I never checked but I saw someone open a Tesla car battery and they look like a bunch of 18650s inside too.

    I refurbish my power tool batteries instead of buying new ones because it is so easy.