DIY Hand-Powered USB Crank Charger

Those hand-crank LED flashlights are pretty handy, but I find myself needed some extra juice in my phone more often than I find myself in the dark. Here's how to convert one of those to a hand-crank USB charger.

Smartphones today have can have pretty disappointing battery life, but if you have a small hand-powered charger in your pocket (or glove box, or purse, or whatever), you'll never have to live with a dead phone again. DIYer Ben Heck shows us how to slightly modify an hand-powered LED flashlight to include a USB port for phone charging. Check out the video above to see how it's done.

The Ben Heck Show >> Charge! [Revision3 via Make]


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