Hey I just picked this up on Amazon, it is a new solar battery array, it charges in the sunlight and then you can plug it into your dead cell phone and it will charge it. It is pretty slick, will charge to 60% within 20 minutes. It could save my life if I am ever stranded somewhere with a dead cell! It has 18 Watts of power which is a massive amount for such a small device. It is pretty well built, it weights a few pounds and is waterproof, drop proof, and dust proof, also it has 4 solar arrays that fold out. Pic is below: