Chinese Exercise Balls That Kinetically Charge Your Batteries
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.Photo credit: Coroflot
In traditional Chinese medical theory, baoding balls work much like acupuncture or shiatsu massage. They stimulate acupuncture points in the fingers which are connected to organs like the heart, liver, spleen, lungs, kidneys, gallbladder, stomach and intestines.
And now they can charge the batteries to your remote control too!
Photo credit: EcoFriend
The device fits both AA and AAA batteries. Since two balls are required for stimulating all acupuncture points, you can easily charge two batteries at once. The Roll Charger has LED indicators for when the batteries are fully charged.
Let's pray no one creates a ben wa version!
Photo credit: Coroflot