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Six years ago, I attended the Electric Vehicle Symposium in Long Beach, California, and at the conclusion of a riveting presentation by a major advanced-tech battery manufacturer, a questioner asked about the prospects of lithium-ion batteries for automobiles. The presenter was stony-faced for a few seconds -- and then responded with a cocked head. "What do you mean by lithium batteries in cars?" Nickel metal hydride was then considered the cutting-edge in battery tech for hybrids, and this question about lithium-ion -- provoked by its chief advocate, the late Dr. Paul MacCready, who was elsewhere in the hall -- seemed beyond the presenter's grasp. The questioner might as well have asked when worm holes in the fabric of space and time were going to let cars blink from one place to another.
Well, I've just driven the world's first mass-production automobile that employs a lithium-ion battery (the lithium-ion-using Tesla Roadster being a low-production affair). No, it isn't a full electric vehicle as Dr. MacCready would have preferred. But there, tucked in the corner of the Mercedes-Benz S400 Hybrid's engine bay, was a 32-cell, 120 volt, 0.9 amp-hour, lithium-ion battery about the size of shoebox...Continued
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