Eco Factor: Backpacks harness solar energy for charging mobile phones.
For the hikers and vacationers of the future, here is a green backpack that should add an element of solar to your explorations. Allowing you to charge your dying cell phone batteries anytime from anywhere, the Max Solar backpacks from Sun-Plugged will help you keep in touch with your kinfolks always.
The solar backpacks produce about 4.5 watts on 1 hour of sunlight, which is just enough to provide your cell phone with 1.5 hours of talk time. Another version generates 2.1 watts of power, so 1 hour of sunlight means 1 hour of cell phone talk time. Each backpack retails at around $160. Quite affordable, aren’t these?
Via: Treehugger
