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Aukey 20000mAh Quick Charge 2.0 Power Bank w/ Apple Lighting Port & 2 USB Ports EXPIRED
$13.10
$22.99
Aukey Direct via Amazon has Aukey 20000mAh Quick Charge 2.0 Power Bank w/ Apple Lighting Port & 2 USB Ports on sale for $22.99 - $9.89 w/ promo code 3GI8OI6W = $13.10. Shipping is free with Prime or on orders $25+. Thanks iconian
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Original Post
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Edited June 24, 2020
at 08:32 AM
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Chargers & Power Banks
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I.e. how much of the power going into a decent wall adapter ends up my my phone's battery when the two are directly connecting using a decent USB cable, versus how much of the power going into the same wall adapter ends up my my phone's battery if the wall adapter is used to charge a decent power bank, which in turn charges my phone?
Mostly I'm just curious, but I'm also thinking of charging all my devices from power banks instead of from wall adapters (actually, in my case it's not a wall adapter but a solar panel with a USB output, and it's just a lot more convenient to charge power banks from it than devices).
Also, while we're at it, why so cheap for a 20Ah power bank?
And do any of these come with wireless charging, either to be charged or to charge other devices--or both?