Solid State Battery Move from Mercedes-Benz
Mercedes-Benz is preparing to test the new generation solid-state battery technology in its electric vehicles by strengthening its cooperation with ProLogium.
Quick Look
- Mercedes-Benz is preparing to test the fourth generation solid-state battery technology in its electric vehicles by strengthening its cooperation with ProLogium.
- The company also continues lithium-metal battery tests with Factorial Energy.
AI-generated summary
Why It Matters
Mercedes-Benz has been working on solid-state battery technologies for a long time to increase the range and safety of electric vehicles.
Mercedes-Benz has taken its collaboration with ProLogium to the next level within the scope of solid-state battery studies that are expected to revolutionize electric vehicle technologies. The automotive giant has gained priority access to next-generation battery cells, strengthening its more than decade-long partnership with the Taiwan-based energy company.
This strategic move covers the testing processes of the fourth generation battery cells that Mercedes-Benz aims to use in future electric vehicle models. The company will carry out electrical, thermal and safety tests of these advanced batteries both at its own facilities and in independent organizations.
Advantages of Solid State Batteries
Solid-state batteries have long been considered the holy grail of battery technology. Replacement of liquid electrolytes found in traditional lithium-ion batteries with non-flammable solid materials makes this technology safer.
This new structure allows batteries to have higher energy density. In addition, faster charging support and longer lifespan are among the main advantages offered by this technology.
The fourth generation cells developed by ProLogium are equipped with ceramic separator technology. The use of non-flammable inorganic electrolyte stands out as an important technical detail that allows high power output of batteries.
Mercedes-Benz is evaluating this technology not only within its own organization, but also in a similar development process with other manufacturers such as BYD, Toyota, Nissan, Honda, VW, Stellantis and Chery. Some models are expected to be released within the next 12 months.
Huge Investment in Europe
ProLogium currently operates a large battery factory in Taiwan. The company plans to establish a new facility in Dunkirk, France, to strengthen its presence in the European market.
This new facility is aimed to reach a total capacity of 44 GWh. The factory aims to supply battery cells to customers across Europe, including Mercedes-Benz.
Tests with Factorial Energy
Mercedes-Benz is not limited to ProLogium alone in its solid-state battery studies. The German manufacturer is also actively testing lithium-metal battery cells from the American company Factorial Energy.
In a test carried out last year, a Mercedes-Benz EQS model with Factorial batteries traveled 1,205 kilometers on a single charge. At the end of the test, it is estimated that the vehicle still has a range of around 137 kilometers.
Mercedes-Benz aims to shape the future of electric mobility with such collaborations. Do you think solid-state batteries can completely eliminate the range problem, which is the biggest obstacle to the widespread use of electric vehicles?
What to Watch
AI outlook — possibilities, not facts
Some solid-state battery models will be released in the next 12 months
Likely · Within months
Open Questions
- When will the first Mercedes model with the new solid-state battery go on sale?
- When exactly will the factory in Dunkirk be operational?





