Tuesday June 27, 2017

Balls That Charge Your Batteries
  Posted by: Digg on May 5th, 2009 10:10 AM
The aptly named Roll Charger harnesses energy from the ball's motion. It converts that kinetic energy into electricity. That electricity is then used to charge a single battery within the ball.<img src="http://feeds2.feedburner.com/~r/digg/news/container/technology/popular/~4/ZxgzowRRhY8" height="1" width="1"/>

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