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usb charger Answered

hi to all ok...there are so many instructables of this argoment that i can't understand! so i have a question. what are the volt and the amp that i need for charging without destroying my usb device? thx

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Pacca

11 years ago

i know that i need 5v but how many amp? and a linear regulator+4(or more) AA(or AAA) will be less efficienty than the project of minty boost? thx

Any USB device by design will not draw more than 500mA (1/2A).