I always hear that it’s bad for lithium batteries to charge over 90% or over 90% so why is there no setting to stop charging after a certain threshold on my phone, kindle, pc or e-skate?
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If you are into building drones, you can learn the hard way: letting a battery go to zero or 100% will pretty much ruin the battery. That is why they ship at 50% charge, and should be stored that way. Some battery chargers have a stop-at setting, others will gladly go to 100%. Same with discharging: unless you have a heads-up display that tells you the battery charge %age, you can easily fly down to 0% and kill your battery. Non-custom drones have more protections built into their chargers and controllers (like DJI for example).
ELI5 why this happens is if the charge is too low, there aren’t enough electrons in the battery to conduct current; if the charge is too high, there are too many electrons and current can’t flow. That’s a radical oversimplification.
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