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Design News - Captain Hybrid - Wireless Power Pitched as Replacement for EV Batteries

Stanford University researchers believe they've found a better way to build a long-range electric car. Amazingly, their solution has nothing to do with batteries.

By using resonating metal coils to wirelessly transmit large amounts of current between roadways and vehicles, the researchers say it's now possible for an electric car to have virtually limitless range.
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Researchers say they can wirelessly transfer 10kW of power to a moving car across a distance of 6.5ft. It's not known yet how many of the coils would be needed or how far apart they would be spaced in order to power a car driving down the highway.
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"The question is, do we really need batteries that are big enough to take us 300 or 400 miles?" Bieker asked. "You end up with a very heavy battery pack that you don't use most of the time. From an efficiency standpoint, do you really need an 800lb battery pack to drive to the store to get some bagels?"
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Yes, we probably do need that battery pack. There's no estimate of cost whatsoever in the article. The infrastructure would be huge. Can you imagine how much copper this would require?

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