I just use this flipsync USB iphone charger keychain: http://lx.tc/flipsync http://lx.tc/flipsync Under $10 and always with me, solves my problem easily and in

I just use this flipsync USB iphone charger keychain: http://lx.tc/flipsync http://lx.tc/flipsync Under $10 and always with me, solves my problem easily and inexpensively! (disclaimer: amazon affiliate link)