BYD says its solid-state EV battery will debut in 2027

In a recent interview, BYD executive vice president Stella Li said the Chinese automaker will introduce its first vehicle with a solid-state battery in 2027, asserting the company’s leading position in commercializing the technology. Her comments echo those of FinDreams chief technology officer Sun Huajun, who earlier outlined a 2027 demonstration and a target of mass production by 2030. BYD chief scientist Lian Yubo clarified that solid-state cells, based on sulfide electrolytes, will first be used in high-end models and will complement, not replace, the firm’s existing lithium-iron-phosphate batteries across its lineup.

The move follows similar plans by Toyota, Mercedes-Benz, Stellantis and Honda, all of which expect to ship solid-state-powered cars within the next decade. While the new batteries promise higher energy density, faster charging and improved safety, their current cost means they will debut on premium vehicles such as a potential future Denza Z. The industry views solid-state technology as a key step toward longer range and safer electric vehicles.