GM developing a solid-state lithium battery GM is planning to use part of a U.S. grant for the development of more fuel-efficient powertrains to work on solid-state lithium battery technology. GM developing a solid-state lithium battery2019-08-292019-08-29https://www.auto-innov.com/wp-content/uploads/2021/09/logo-a.pngAuto-Innovhttps://www.auto-innov.com/wp-content/uploads/2019/08/2020-chevrolet-boltev.jpg200px200px