SunCat Batteries

Great idea are based on seeing the obvious and taking advantage of same, something 99.9% of the people of the world miss out on.

"At home I always have some batteries lying around, either rechargeable or normal ones. Usually they are empty, but I'd like them to be always fully charged. I could use a normal charger and there is a lot of solar devices that charge rechargeable batteries. I wanted it simpler; why hasn't anyone made a battery with integrated solar cells? The idea of the "SunCat" batteries where born. The batteries should just bask in the sun like a cat and left for a while, in a sunny window, they would slowly recharge."

Any questions? :)