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With lead acid batteries you might get lucky to have 500 to 700 recharge cycles - 2 - 3 years - the EEStor technology has been tested up to a million cycles with no material degradation. [Recharge = 5 minutes X 1,000,000 cycles = 9.5 years non-stop, 24/7/365.] If that's not impressive enough, EEStor says its energy storage technology is "not explosive, corrosive, or hazardous" like lead-acid and most lithium-ion systems, and will outlast the life of any commercial product it powers. It can also absorb energy quickly, meaning a small electric car containing a 17-kilowatt-hour system could be fully charged in four to six minutes versus hours for other battery technologies, the company claims.
According to patent documents [prepared by the inventors] obtained by the Star, the invention will do no less than "replace the electrochemical battery" where it's already used in hybrid and electric vehicles, power tools, electronic gadgets and renewable energy systems. EEStor's technology could be used in more than low-speed electric vehicles. The company envisions using it for full-speed pure electric vehicles. EEStor's claims its "electrical energy storage unit" could pack nearly 10 times the energy punch of a lead-acid battery of similar weight and, under mass production, would cost half as much. Toronto Star , March 2006 [Edited by Don W]