We've all been there: at the most inopportune time, your cell phone battery dies. And with your charger sitting at home, you're effectively severed from your virtual network. No calls, no texts, no tweets, emails or updates.

Stranded in that cold, dark place, your savior may well be the YoGen Mobile Charger, a mini generator. The small device charges your phone, camera, iPod, and more with a few tugs on a ripcord.  Check out Paul Eng's demonstration of the YoGen in the video at right.

For more Consumer Reports videos from CES 2010, check out our video hub.