Whats the most efficient; Using a fully charged SD when plugged into a 20,000 mah battery bank, or depleting the SD battery then plugging into the bank to continue play?
I have an Anker Powercore that has enough output to charge the SD while playing, so just wondering what is the most efficient method to get the most out of both power sources for long haul flights.
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Also, you should never discharge a battery to 0, or do it regularly, as it will damage the battery and make it keep less charge.
This is dependent on battery chemistry. True for common LI-ION.
Any good battery management system should avoid that.
Well actually no, the battery health is counted in charge circles, so if you charge from 0 to 100 it is one charge, if you charge from 50 to 100, then again from 50 to 100 it is again one charge.
Other than that when you use the battery and let daily to reach 0% it may be over discharged and start creating crystals damaging the battery, the battery would never actually be under 2-5%, but why stress that battery? I'm charging my devices at 20% and it helps with the battery life.
Also if you want long, healthy batteries you shouldn't charge to 100 as not to overcharge but who does that?
Apples battery management stops charging at 80%, according to your behavior. If you use the laptop with power connected a lot, it will stop charging and resume later.