Shake to Recharge

Shake, shake, shake, simply shake the battery and you will charge it in quite an easy way. It is composed of a rechargeable Ni-mH battery, a shaft, a coiled bobbin, a permanent magnet and a rubber shock-absorber. When it is shaken, the permanent part of the battery will move up and down through the shaft to produce electricity effectively.

Source: inewidea.comAdded: 10 November 2009