Mercedes-Benz secures access to ProLogium’s Gen4 battery cells for testing

Mercedes-Benz will test ProLogium's latest Gen4 battery cells under a new agreement that gives the carmaker priority access to the technology. The work will cover electrical, thermal and safety performance at Mercedes-Benz facilities and external testing institutes.

The agreement is a step in an established relationship between the companies, but it is a technology evaluation, not a production supply deal or a confirmed vehicle programme. Results from the tests will help Mercedes-Benz judge whether the cells could be used in future vehicles.

ProLogium describes its Gen4 design as combining a non-flammable inorganic electrolyte, ceramic separator and an active safety mechanism. It says the platform is intended to offer high energy density, fast charging, high power output and low-temperature performance. The announcement does not provide comparable independent test results or vehicle integration figures for the new cells.

ProLogium says its Taoke plant in Taiwan supports C-sample production and demo car programmes. Its planned Dunkirk factory could eventually provide European capacity, but that future facility and the Mercedes-Benz tests should be kept separate from any decision to source Gen4 cells at volume. For battery and vehicle engineering teams, the next meaningful evidence will be test results and production qualification.