The NightStar “Shake” flashlight batteries are charged when you shake the light back and forth. This flashlight is waterproof and the manufacturer claims it can be stored for years with the ...

Some devices are elaborately made to appear as if they operate on Faraday’s Law, when in fact the components have as much functionality as a pet rock All the rage a few years back, shake-to-charge ...

Has anyone used one before? What quality are they, does the light get very bright? I was going to give one to my girlfriend to keep in her car if she ever needs a light, one to my parents as they like ...

As Y2K approached and the world waited for blackouts that never came, human-powered electric gadgets saw a surge of popularity. These radios, flashlights and other devices don't need batteries -- they ...