If you're suddenly hit with a blackout, this small gadget lets you charge your phone and power a light — no outlet needed.

Discover how to transform everyday objects into useful energy devices in this exciting DIY science project. Learn step-by-step how to build mini generators from recycled DC motor components and create ...

Add Yahoo as a preferred source to see more of our stories on Google. The Joyeky rechargeable hand crank lantern. Amazon If you’ve ever sat through a power outage watching your phone battery tick down ...

If you find your mobile devices run low on battery power, making you dashing to the nearest power outlet, you may be interested in a new portable hand crank charger that has been designed by Valentin ...

Mobile phone manufacturer Motorola has teamed up with Freeplay Energy Group to create a hand-powered energy source for mobile phones. Turning the handle on the FreeCharge mobile-phone power source for ...

So... the people have spoken. You’re either happy or furious today. Either way, you’re going to need more energy for your phone soon (#firstworldproblems). This ...

I've seen lots of hand crank chargers for cellphones, either built into radios or as standalone units, but between the fine print and the customer complaints, there doesn't seem to be one that really ...