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November 26, 2017 12:00 am

Is Elon Musk Greatly Exaggerating Tesla's Battery Technology?

"Tesla's newest promises break the laws of batteries," writes Bloomberg. Long-time Slashdot reader rudy_wayne summarizes their report. "Elon Musk knows how to make promises. Even by his own standards, the promises made last week while introducing two new Tesla vehicles...are monuments of envelope pushing. To deliver, according to close observers of battery technology, Tesla would have to far exceed what is currently thought possible." The Tesla Semi, which Musk claims can haul 80,000 pounds at highway speeds for 500 miles, then recharge 400 miles of range in 30 minutes, would require "a charging system that's 10 times more powerful than one of the fastest battery-charging networks on the road today -- Tesla's own Superchargers." The Tesla Roadster is promised to be the quickest production car ever built. But that achievement would mean squeezing into its tiny frame a battery twice as powerful as the largest battery currently available in any electric car. These claims are so far beyond current industry standards for electric vehicles that they would require either advances in battery technology or a new understanding of how batteries are put to use, said Sam Jaffe, battery analyst for Cairn Energy Research in Boulder, Colorado. But Jaffe reaches an interesting conclusion. "I don't think they're lying. I just think they left something out of the public reveal that would have explained how these numbers work."

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