Mercedes-Benz has secured priority access to ProLogium's Gen4 solid-state battery cells under a new agreement. The automaker will test the cells' electric, thermal, and safety performance at external institutes. The partnership between the two companies dates back to 2016.
ProLogium's Gen4 platform uses a non-flammable inorganic electrolyte and ceramic separator, offering up to 400 Wh/kg energy density and ultra-fast charging from 5% to 80% in 6.4 minutes. The company has already begun mass production of its Gen 3.5 cells in Taiwan and is building a gigafactory in Dunkirk, France, with phased capacity reaching 44 GWh once fully operational.
Mercedes expects its first production solid-state EV by 2030 and is also working with Factorial Energy on a separate solid-state battery program. ProLogium plans to list on the Nasdaq via a SPAC merger expected to close by the end of 2026. The company claims to be the only one with a publicly demonstrated solid-state mass-production line.