Recently spotted my old PSP’s battery case had almost popped off due to the expanding battery. Threw it into a bucket filled with sand and hauled it to the nearest recycling place.

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[–] fuckwit_mcbumcrumble@lemmy.dbzer0.com 12 points 1 month ago

~40% state of charge is where batteries are the happiest. But things rapidly get worse for them when they dip lower. I charge mine up to 60 then try to remember to check on them periodically.

A dead battery is much less of a threat than a fully charged ones. But a dead battery is much more likely to expand when you charge them up again.