Soccer Ball That Generates Electricity?

Four Harvard students have come up with a plan to combat the use of kerosene in Africa: a soccer ball that generates and stores electricity during the course of a game, which then can be used in LED lamps or even to charge a cellphone battery. Early prototypes of the ball, called sOccket, use a technology similar to that in shake-to-charge flashlights, wherein the movement in the ball forces a magnet that creates voltage in the coil and generates electricity. The students recently tested the ball in South Africa and they hope to have the ball on the market by the end of 2010.