4 ms·

That’s interesting, do you have any source?

• ggm 3y ago
  No. I just believed (wrongly) the chips on the cells said 100 and 0 at the set points which avoided killing the chemistry.
  • mrzool 3y ago
    Oh I see, I misread :)
  • jcparkyn 3y ago
    Disclaimer: I'm not an expert, so take this with a grain of salt. There's always going to be some trade-off between how full you charge the battery and how much it degrades, so of course manufacturers choose a threshold that isn't going to destroy the battery too quickly. The problem is that this isn't exposed to the user (e.g., there's no way to temporarily override it to a higher threshold when you actually need it). This means the threshold needs to be set quite high (to avoid wasting usable capacity), and manufacturers don't have much incentive to make the battery last more than a couple of years. Limiting to 80% in software is a way around this, because users (and reviewers) can use the full "100%" (still an arbitrary threshold) when they need it, and choose for themselves how long they want the battery to last.