Mercedes-Benz has secured priority access to ProLogium’s latest Gen4 lithium-ceramic battery cells under a joint testing agreement.
The cells will undergo electrical, thermal and safety testing at Mercedes-Benz facilities and specialist external institutes. The results will be used to assess their suitability for future electric vehicles.
No timetable for vehicle integration, testing volumes or associated production programme was disclosed.
ProLogium said its Gen4 platform combines a non-flammable inorganic electrolyte, ceramic separator and proprietary active-safety mechanism. The company is targeting high energy density, fast charging, high power output and low-temperature performance, alongside scalable manufacturing and a competitive cost structure.
Jörg Burzer, Mercedes-Benz Group chief technology officer for development and procurement, said the agreement meant the companies were “taking the next step in exploring advanced battery technologies for future electric vehicles”.
Mercedes-Benz is a strategic investor in ProLogium
The deal extends a relationship dating from 2016. Mercedes-Benz is a strategic investor in ProLogium and has a representative on its board. The companies have previously tested pouch and prismatic lithium-ceramic cells, as well as bipolar battery technology.
ProLogium’s Taoke gigafactory in Taiwan is supporting C-sample production and vehicle demonstration programmes after completing GWh-scale manufacturing validation, according to the company.
The battery manufacturer is also developing a gigafactory in Dunkirk, France. Construction of the first phase began in February 2026 and is intended to provide 4GWh of annual capacity by 2030. The site has a planned maximum capacity of 44GWh.
The testing agreement remains an evaluation project rather than a production or cell-supply contract.
Photo: The new Mercedes-Benz C 300 4MATIC electric. Mercedes-Benz’s ProLogium agreement covers cell testing for potential future vehicles and is not associated with a named model.
Credit: Mercedes-Benz
