-No batteries needed; powered by a capacitor, which stores electrical charge.
"When I designed LJUSA handdriven torch I wanted to give it a unique, fun look and a form that fits comfortably in a child's hand. I also thought about how children often forget to switch off the light when they use torches. And parents have to change batteries, all the time. The good thing about LJUSA is that it doesn't need batteries! It's easy for children to charge on their own by just winding the handle - and the energy is stored inside. What I like most about it is that it inspires children to think about where energy comes from - and how important it is we save it."
No batteries needed; powered by a capacitor, which stores electrical charge. http://www.ikea.com/th/en/images/products/ljusa-led-torch-hand-driven__0134717_PE291243_S4.JPGLJUSA LED torch, hand-drivenhttp://www.ikea.com/th/en/catalog/products/70193533/701.935.33199 THB