Useful Information about Recharging

 

Hats off to Ken Shirriff, for his extraordinarily comprehensive web page.  Darn nearly anything you could ask about USB charging.

chargers

Also read what Wikipedia has to say about alternating current (AC).

http://www.righto.com/2012/10/a-dozen-usb-chargers-in-lab-apple-is.html
https://en.wikipedia.org/wiki/Mains_electricity
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