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  • robyr1 commented on rodski's instructable PowerBanks "How it Works"1 week ago
    PowerBanks  "How it Works"

    Can you please help me to understand the function of the power switch on some power banks? On some products works, so when i plug my smartphone it charge only when i press the switch, and i get 5v out, on some other products, i get 5v automatically when i plug a usb cable, and it doesn't matter if i press the power switch or not!

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