Mercedes-Benz Passenger car and Formula 1 engineers team up as solid-state battery road tests begin

Mercedes-Benz engineers from the road and racetrack and Factorial cell engineers have worked together on delivering an all-new solid-state battery test program, which has brought the first car powered by a lithium-metal solid-state battery to the road.

Mercedes AMG High Performance Powertrains (HPP), a 100 % subsidiary of Mercedes-Benz Group specialising in industry-leading Formula 1 technologies, and the Mercedes‑Benz Center of Competence for Battery Systems designed and developed a completely new and innovative battery system.

In addition to its prowess on the racetrack, HPP is capable of rapidly transferring F1 technologies and know-how into high-performance automotive projects.

After intensive testing on various test benches, the prototype solid-state battery was integrated into an EQS at the end of 2024.

The all-electric car from Mercedes‑Benz was slightly modified to fit the solid-state battery and was equipped with all accessories to operate it.

The first laboratory vehicle tests were already conducted in Stuttgart at the end of 2024 to prepare for the road tests that started in February 2025.