From the designer Qian Jiang comes these rechargeable batteries. With charge times taking 5min for 40% capacity to 20min for 100% capacity, they also can be used as a traditional rechargeable battery and can be charged in classic AA chargers. I’m sorry but these don’t seem to have a price point or production date, but look and sound amazing…
Article Link: www.yankodesign.com
QianJiangWindUpBattery
QianJiangWindUpBattery2