• misophist@lemmy.world
    link
    fedilink
    arrow-up
    10
    ·
    11 months ago

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

    • Norah - She/They@lemmy.blahaj.zone
      link
      fedilink
      English
      arrow-up
      7
      ·
      11 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
        link
        fedilink
        arrow-up
        6
        ·
        11 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.

        • Norah - She/They@lemmy.blahaj.zone
          link
          fedilink
          English
          arrow-up
          2
          ·
          11 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
            link
            fedilink
            arrow-up
            1
            ·
            11 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.

              • Eheran@lemmy.world
                link
                fedilink
                arrow-up
                1
                ·
                11 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
      link
      fedilink
      arrow-up
      1
      ·
      11 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.