The cost of the batteries to be installed on the electric RAV4 crossover that Toyota is developing with Tesla Motors could be as little as one-third of the electric car batteries that conventional automakers are developing, according to Toyota’s top engineer. Tesla is using thousands of lithium-ion batteries typically used in laptops to power its zero-emission Roadster sports car. Meanwhile, other carmakers with electric models such as Mitsubishi Motors Corp. and Nissan Motor Co. are using expensive batteries intended specifically for EV use
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