Did you notice the output amperage? 800 Milliamps is 8/10 ampere. That MIGHT recharge a cell phone battery, but that's about all. It definitely wouldn't be able to power a radio, or run a cigarette lighter like someone suggested. I don't think that amount of current could even run a GPS system.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!