The Wind-Up Battery concept comes from the minds of Yeon Kyeong Hwang & Mieong Ho Kang. These two have developed a rechargeable battery that doesn't require any electricity to charge.
The Wind-Up Battery concept is eco-conscious and shouldn't break a sweat. To recharge the batteries, all you have to do is twist the battery consecutively until it's full. Though I'm not sure how many twists it would take, I'm sure it's worth it instead of going out and buying another pair.
Stats for Twisted Rechargables
Trending: Older & Chilly
Research: 2,212 clicks in 272 w
Interest: 2.8 minutes
Concept: Wind-Up Battery Concept
Related: 52 examples / 40 photos
Segment: Neutral, 18-55
Comparison Set: 19 similar articles, including: rechargable knapsacks, gadget-charging jacks, and sunny eco chargers.
More Stats +/-
Sunny Eco Chargers
Enhanced Eco Batteries
Interchangeable Battery Packs