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 9 months ago (1 children)

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 9 months ago (1 children)

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 9 months ago (1 children)

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 9 months ago (1 children)

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 9 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.