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Magic fix for smart devices Rule (media.kbin.social)

submitted 7 months ago by static@kbin.social to c/196@lemmy.blahaj.zone

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[-] misophist@lemmy.world 10 points 7 months ago

Wait, constant charge/discharge cycling is better for phone batteries than smart phone trickle charge circuitry?

[-] princessnorah@lemmy.blahaj.zone 7 points 7 months ago

I don’t think it’s so much the charge circuitry as keeping the battery at 100% all of the time. keeping it plugged, but software limited to 80% capacity is probably better than letting it discharge.

[-] misophist@lemmy.world 6 points 7 months ago

I know keeping a battery at 100% is worse than 80% for li-ion batteries. That is not the discussion. OP specifically suggested a constant full charge/discharge cycle as an improvement over leaving the device plugged in, and I can't imagine that being better for the battery.

[-] princessnorah@lemmy.blahaj.zone 2 points 7 months ago

I guess what I was trying to say is that yeah, it probably would be better than keeping it fully charged. I wouldn’t let it dip below 20% though.

[-] Eheran@lemmy.world 1 points 7 months ago

Lower is no problem. The damage is done by the high voltages and also temperature. Don't go below something like 2 V and you will be just fine.

[-] princessnorah@lemmy.blahaj.zone 1 points 7 months ago

Whilst going below 20% is definitely a lot less bad than going over 80%, it will have the longest life if you stick between those two.

[-] Eheran@lemmy.world 1 points 7 months ago

No. Going as low as possible and staying as low as possible is the best for any lithium battery. Here a good source: Accubattery. Note how "battery University" is not a credible source, despite their name. Maybe they made people believe this in the first place.

And here a primary source for the most fragile LiPo cells. Look at figure 7. Even down to 1.2 V and the cells still reached 50 cycles until they were at 80 % remaining capacity. Not going below 2 V and it will be just fine.

[-] Aasikki@sopuli.xyz 1 points 7 months ago

Should be better better than just cooking it at 100%, but still not ideal in the long run. Ideally you'd bypass the battery entirely.

It's recommended to keep batteries at around 40-60% for storage while not in use. Not sure if keeping it around there would help when it's in use, but that could be worth looking into if bypassing isn't an option.