Green battery runs for years.

NON-STOP ENERGY
Green battery runs for years
November 2 2009 | Times of India Bangalore

 
Washington: Scientists at the Technion-Israel Institute of Technology have developed a new, environmentally friendly silicon-air battery capable of supplying non-stop power for thousands of hours without needing to be replaced.
 

Created from oxygen and silicon, such batteries would be lightweight, have an unlimited shelf life, and have a high tolerance for both humid and extremely dry conditions. 

Potential uses include medical applications (example, powering diabetic pumps), sensors and microelectronics structured from silicon. Silicon-air batteries will be used like the ones already in use today , said lead researcher Yair Ein-Eli . But by using silicon a safe, non-toxic , stable and more common material we can create batteries with infinite shelf life and high energy capacity, he added.
Silicon-air batteries would be able to provide savings in cost, weight as they lack the built-in cathode used in conventional batteries. ANI