Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Hand crank usb charger

  1. Aug 14, 2012 #1


    User Avatar

    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
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted

Similar Discussions: Hand crank usb charger
  1. Usb charger (Replies: 2)

  2. Solar charger (Replies: 10)