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Why Charging Your Gadgets Over 80% Is Such a Bad Idea | iFixit News (www.ifixit.com)
submitted 2 years ago by to c/technology@lemmy.world
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[–] 34 points 2 years ago (6 children)

I live in earthquake, volcano, and tsunami territory, so I think I'll keep charging to 100% for now.

When I lived in the US and went through a hurricane, we had no power for almost 2 weeks and that stuck with me.

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  • [–] 19 points 2 years ago (4 children)

    Long term, keeping your phone at 80% and having battery backups charged is going to be your best bet, assuming having having said battery backups is reasonable for you. It won't take long for your 100% to suddenly be what 80% was when the phone was new.

    If/when a situation happens where you need it, you can charge up to 100% no problem off the backups.

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  • [–] 6 points 2 years ago (2 children)

    Well this applies to anything with a lipo/ion battery. If you charge your backup battery pack to 100% then store it, it's very probably you'll end up having a drained and fully dead battery when you need it.

    Wonder if there are any battery packs designed for long term storage. They could hold 100%(4.2v or whatever) but would internally discharge slowly down to 80% then stop. I bet those huge batteries YouTubers use don't even have that level of BMS. It's trivial software but planned obsolescence that eco friendly capitalist companies would never do.

    Here I am with 5 year old RC 5k cycle lipos that still have at least 80% of their manufacturing capacity.

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  • [–] 7 points 2 years ago* (1 child)

    Obviously that'll be true with battery packs too. They're also significantly cheaper, so it's usually fairly reasonable to have multiple and them being at 50% capacity doesn't matter nearly as much.

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  • [–] 1 point 2 years ago

    That's correct, I agree with you.

    That requires this knowledge of how batteries work. Saying keep a battery pack and your phone at 100% could leave people in a situation worse than if they just used the battery manager to stop their phone at 85%. 99% of people will plug their battery pack in until it's full, stash it wherever they decide for emergencies, and will find a dead pack when they need it.

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