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 August 11, 2009 - 08:00 GMT
Sony has launched a new lithium ion secondary battery, using olivine-type lithium iron phosphate as the cathode, thereby achieving a power density of 1800W/kg and a life span of 2,000 charge cycles. The new battery can be charged to 99% of its capacity in 30 minutes, and will initially be supplied for motor driven devices such as power tools. By comparison, the Toshiba SCiB battery, introduced in March 2008 and mainly used in electric vehicles, has a life span of 3000 cycles and can be recharged to 90% capacity in five minutes...More
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