alt Hacker NewsLithium batteries age even just sitting on the shelf. I fly RC planes and we store our batteries at 3.8V to lengthen their life, but they still deteriorate even when not used. Like anything else, I guess.
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nubinetwork • today at 8:34 AM
Can confirm, I bought some Panasonic cells roughly 10 years ago for a battery pack, and have ~12 cells that didn't make it into the pack.
They've been sitting unused, in their original packaging, never opened... They're still sitting at the charge they shipped at, but the capacity is so diminished that one can't even run an esp32 for a day. I've tried cycling them to see if I can get the capacity back up, but I think they're toast already.
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avidiax • today at 8:11 AM
Put them in the vegetable bin in the fridge, too. Should make them last much longer.
The article specifically talks about how this has changed with the evolution of chemistry in Li based car batteries.
I suspect the RC plane batteries you've been using for five years are not the same chemically as the EV car batteries in use in the UK for five years.