When recharging our batteries we normally use another device to complete it. However, Knut Karlsen had an idea of recharging it without using another device and the electricity in the form of his creation called the solar cell. The solar cell is a battery that can be re-charged using the solar power. The batteries have a solar panels integrated into it that recharges continuously if placed outdoor. The prototype cells do not have a definite charging time yet, but if ever it will already be available in the market, people will definitely patronize it especially those who want to give some share in saving our nature.
Source: Crowded