Years back XD Design introduced us to a concept to charge our mobile devices using solar energy, recently XD Design released a  retail version  Port Solar Charger that gives you the ability to harness the sun’s power allowing you to pretty much charge anything that uses a USB cable charge by connecting to your  device using the integrated USB charging cable, The Port Solar Charger device easily sticks to any window whether your in a plane or car  simply stick charger to whichever window gets the most sun and harness the power of free energy! [Get it]