/:16 Would you want to use a hand-crank to charge your phone every single day? Definitely not. But hardware hacker Ben Heck's clever hand-crank mobile charger could certainly come in handy in those ...

If your smartphone is always running out of juice while out and about, this great DIY handcrank charging hack can keep your device juiced up whenever you need. Its a great weekend project that uses an ...

January 25, 2011 Add as a preferred source on Google Add as a preferred source on Google Click to viewThose hand-crank LED flashlights are pretty handy, but I find myself needed some extra juice in my ...

It’s not exactly free energy, but if you build your own USB hand-crank charger you can sit around watching Big Brother while absent-mindedly cranking power into your digicam or iPod. It does require a ...

A standard part of travel kit for the 2020s is now a battery pack — a hefty lithium-ion cell with onboard electronics for USB charging, that ensures all of our devices stay topped up while we’re out ...

You know those hand-crank flashlights that seemed to be all the gift-giving rage this past holiday season? Surprisingly, these hand-cranks can be modded to charge a ...