Off the grid: 10 awesome solar chargers for smartphones and tablets
Raise your hand if you've ever been stuck with a dead cell phone and no charger for it within a 10-mile radius. Okay, chances are you've never been in such a situation, but in case you were, we know what could have helped you get your handset up and running – a solar-powered charger with a convenient USB output.
10 portable solar chargers for smartphones and tablets
