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He'd been finding out a promising new sort of battery that used lithium ion, first made in style by Sony in its camcorders a decade earlier earlier than it spread to laptops and different shopper electronics. Lithium-­ion cells had been lighter weight and packed more energy than a lot of the rechargeable batteries then in the marketplace. Straubel knew the challenges posed by older batteries-­those lead-­acid, brick-­shaped containers had been heavy, they usually held comparatively little vitality. He may get twenty miles of driving range.... Read more