Exclusive: Tesla’s secret batteries aim to rework the math for electric cars and the grid

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(Reuters) – Electric car maker Tesla Inc (TSLA.O) plans to introduce a new low-cost, long-life battery in its Model 3 sedan in China later this year or early next that it expects will bring the cost of electric vehicles in line with gasoline models, and allow EV batteries to have second and third lives in the electric power grid.

FILE PHOTO: Tesla China-made Model 3 vehicles are seen during a delivery event at its factory in Shanghai, China January 7, 2020. REUTERS/Aly Song/File Photo

For months, Tesla Chief Executive Elon Musk has been teasing investors, and rivals, with

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