Charge your phone with AA batteries!?

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More project info on Instructables:http://www.instructables.com/id/Charge-your-phone-with-AA-batteries/
Previous Video: http://youtu.be/Ya9RpvQyww4
Charge your phone with a car battery (6V-24V) || Voltage regulator:
http://youtu.be/zjvZVBa6UX0

The last function of my usb phone charger is finished. Find out how i charge my phone with AA batteries.

Music:
Killing Time, Kevin MacLeod (incompetech.com)