Goal Zero brings the Yeti 150 solar generator back from the wilderness
 

It's not the first gadget to be named after the abominable snowman, but at least this one might save your neck in a tight spot. Goal Zero's Yeti 150 solar charger is designed for use in the great outdoors, packing a 15W photovoltaic panel hooked up to a 150 watt hour battery. It'll be available to buy this Spring, just in time for camping season, and will cost you a not-too-abominable $400.

http://www.engadget.com/2013/01/06/goal-zero-yeti-150/