With last year's Ivy Bridge chips, though, the 52Wh battery is expected to last a little over six hours on a charge.

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Todashev was arrested this month on a charge of aggravated battery after getting into a fight over a parking spot with a man and his son outside an Orlando mall.

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He was arrested this month on a charge of aggravated battery after getting into a fight over a parking spot with a father and son at an Orlando shopping mall.

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Khare's device, a black, rectangular type of supercapacitor just over an inch long, can charge a cell phone battery in 20 to 30 seconds, she said.

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Leonhardt said it would be more practical to use solar power to help charge a car's battery and use the more efficient panels mounted on a roof or over a parking area to supply the rest of the electricity needed to drive the engine.

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