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 ...

Our smartphones are, for the most part, really nice. They help us find information quickly and stay connected around-the-clock. The battery, however, is another issue. With all the apps sucking the ...

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 ...

Hurricane Sandy has many people thinking about what they would do without power for days on end, particularly when it comes to the need to keep essential items like cell phones charged, ready and ...