Batteries die, and when your phone has a WiMAX antenna plus dual cameras and a gigantic screen, well, those batteries tend to meet their maker sooner than later. Enter hacker extraordinaire Ben Heck
with a simple and cheap solution: a hand-powered charger. Ben took an inexpensive flashlight with a crank on it, disassembled it, and ran the leads from the internal motor to his HTC EVO 4G
. The exciting (or at least excited) video below is proof that it works, but we're wondering which would die first: the 4G's battery, or your arm after cranking on this thing for an hour or two.