Linked by David Adams on Tue 20th Jul 2010 18:09 UTC
Hardware, Embedded Systems Japanese printer company Brother has invented a battery that can be recharged by shaking it. It's intended for devices like remote controls that use very little power and would normally require infrequent battery charges, so unfortunately you couldn't use it to power a car that could drive forever on a bumpy road.
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RE[2]: more energy
by vasper on Fri 23rd Jul 2010 11:29 UTC in reply to "RE: more energy"
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Not really. A huge part of the energy is recycled through elasticity in our tendons and joints. That's why a human can walk using only 50 W of power, while most human-sized walking robots need something in the order of 700 W.

The human body is efficient in it's workings. That isn't the same as recycling energy. Anyhow, the energy expelled from the body in the form of kinetic energy can be harvested by piezoelctric mechanisms to create electricity.

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