Dialogos

BMW Tests Solid-State Batteries in a BMW i7

Published January 7, 2026, 10:05
BMW Tests Solid-State Batteries in a BMW i7

BMW Group is advancing the development of all-solid-state batteries (ASSB) by integrating a prototype battery from Solid Power into a BMW i7 for testing in Germany. ASSB offers higher energy density in a smaller volume compared to conventional batteries, promising greater range without a significant increase in weight. Collaboration between BMW and Solid Power has intensified since 2022, with BMW investing in Solid Power and planning to operate a pilot production line for ASSB cells at the CMCC in Parsdorf. The tests will focus on managing cell expansion, controlling operating pressure, and regulating temperature. BMW has invested heavily in battery technology, with a Battery Cell Excellence Center (BCCC) in Munich.