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Recharge Your Electric Car Through Its Tires

Researchers power EVs with electricity transmitted from the road to steel belts in tires.

Given the shortcomings of vehicle batteries–their high cost, the time it takes to recharge them, and the fact that they store less energy as they age (they’re expected to lose about 20 percent over 8 years)–many researchers are looking for alternative ways to power electric cars.

Powering them from overhead lines, the way many city buses get power now, doesn’t seem practical. But some researchers are suggesting embedding wireless power transmitters into roads that could top off a battery as a car drives over them. This would make it practical to use smaller, cheaper batteries that could be replaced every few years.
More technologyreview.com

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