The rechargeable solar taken

  More and more designers and engineers seeking alternatives capable
  to preserve our planet. Kyuho Song and Boa Oh mark a further step in
  this direction with this concept of portable and rechargeable power outlet
  Solar.
Inexpensive (think your electricity bills) and extremely practical
  tick, it takes just a single window, which still receives
  enough sun to be able to recharge it easily.
  Transportable, you are guaranteed to always have current where you
  go and therefore will not have an excuse for not having your battery
  phone, at least if the project comes one day to open to the public.