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Sony’s new LiFePO4 (olivine-type lithium iron phosphate) batteries have a high power density (1800W/kg), a life span of around 2,000 charge-discharge cycles, an “excellent” shelf life, and can charge to 99% capacity in 30 minutes. Sony first supplied the new batteries in June 2009 for use in power tools, but their capabilities open up many other applications, including electric vehicles.

Patented by the University of Texas’ Dr. John Goodenough in 1996, LiFePO4 has a cell structure that remains stable in temperatures as high as 300°-500° Celsius. The batteries have a nominal cell voltage of 3.2V, a 1.1Ah capacity, and a 20A maximum continuous discharge current — so you don’t want to accidentally short these, or things might get hot in a hurry.

Sony [Manufacturer’s Site]
EE Times [Source]

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