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Hand crank usb charger

  1. Aug 14, 2012 #1

    ffp

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    Hi, i have one of these chinese hand crank flashlight and i wanted to turn it into a usb charge to charge my smartphone.
    my flashlight is like this:

    http://www.google.com/imgres?q=hand...mosquito killer racket, would this be enough?
     
  2. jcsd
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