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Joined 3 years ago
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Cake day: June 29th, 2023

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  • True. There’s lots of pretty dodgy cells floating around these days, and they are often marked as being from more reputable manufacturers… I’m speaking mostly of packaging batteries 18650 and larger (probably smaller too) rolled type batteries, though I assume there’s shitty prismatic/pouch types as well.

    I didn’t see anything like that in OP’s image, which is why I wasn’t advising undue caution. Personally I try very hard to stick with reputable brands and establish manufacturers when playing around with bare cells, power banks, weird Amazon gadgets, etc.

    I’m certainly not a proper expert either. I do try to exercise an abundance of caution with unknown or questionable products, damaged cells, etc.

    Years ago when getting into quadcopters/drones I read some good advice; high powered batteries should be treated more like fuel than traditional NiCad/NiMh batteries. That advice has always served me well.



  • It’s fine. Even if they were lithium batteries —still fine. See battery manufacturers actually design batteries specifically so that they don’t fail catastrophically (🤯 crazy right?) but it’s true. Turns out they have whole-ass warehouses full of them.

    Obviously it’s possible for lithium batteries to fail catastrophically, but this isn’t a typical failure mode. Generally catastrophic failures happen when a battery is damaged and or under load.

    Typical household batteries are not as energy dense as EV batteries. And are not packed as densely such that a single cell puffing won’t cause a cascading failure.

    I do recommend keeping them in bags to contain leaks, coin cells are generally already well packed, but it can’t hurt. It’s also not a terrible idea to write the date you bought them on the bags and properly dispose of them after ~5 years.