According to Chinese media, Sun Huajun, CTO of BYD’s battery business, stated at a forum event on solid-state batteries that the company had already produced its first solid-state cells with 20 Ah and 60 Ah on its pilot production line in 2024. The portals CN EV Post and Car News China reported on this based on a video recording of the presentation.
According to the battery business CTO, BYD expects to start “mass demonstration” of solid-state batteries around 2027. However, he did not provide any information on the number of prototype cells produced to date. And even after the demonstration applications, there are no plans to start series production in the near future: A truly large-scale introduction of solid-state batteries could possibly only take place after 2030, Sun is quoted in the reports.