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BMW Group Tests Solid-State Batteries in a BMW i7

Published January 7, 2026, 10:26
BMW Group Tests Solid-State Batteries in a BMW i7

The BMW Group is advancing solid-state battery (ASSB) technology by integrating a prototype battery from Solid Power into a BMW i7, currently undergoing testing in Germany. ASSB technology is considered promising due to its higher energy density compared to conventional batteries, without a significant increase in weight. Collaboration between BMW and Solid Power intensified in 2022, aiming to develop and implement this technology. Testing focuses on managing cell expansion, controlling operating pressure, and regulating temperature. BMW is investing in ASSB technology and plans to operate a pilot production line for cells at the CMCC in Parsdorf, leveraging Solid Power’s expertise.