BMW Tests All-Solid-State Batteries in i7, Aims to Boost EV Range
BMW Group is advancing its battery technology with a new partnership. It has started testing all-solid-state battery (ASSB) cells in a BMW i7 vehicle, a result of its collaboration with US-based Solid Power. The company aims to enhance energy density and vehicle ranges.
BMW will operate a solid cell prototype line at the CMCC in Parsdorf, based on a research and development license from Solid Power. This follows years of cooperation since 2016, with BMW Group investing in Solid Power in 2021.
The BMW i7 test vehicle integrates innovative module concepts for ASSB cells from Solid Power. It is currently being operated in the Munich area. BMW Group and Solid Power are testing these cells to assess their potential for higher energy density and longer vehicle ranges compared to current battery technologies.
BMW Group's Battery Cell Competence Center (BCCC) in Munich supports this effort, covering the entire value chain of battery cell technology. The company works with around 300 partners to quickly and efficiently implement innovations in this field.
BMW Group's collaboration with Solid Power aligns with its battery strategy to develop innovative technologies with leading industry partners. The controlled expansion of ASSB production by Solid Power, following a joint development agreement, could bring significant advancements to BMW's electric vehicles. Test drives with the i7 prototype, equipped with Solid Power batteries, began in Munich in May 2025.
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