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Chinese exercise balls for charging batteries


Shanghai designer Jiang Qian has created a kinetic charger that charges up your batteries. It harnesses energy from the ball’s motion. It converts that kinectic energy to electricity. This electricity is then used to charge a single battery within the ball. Cool huh! The device fits both AA and AAA batteries. The Roll Charger has LED indicators for when the batteries are fully charged.


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[Treehugger]