Mercedes-Benz and Factorial boost the electric vehicle range of solid-state batteries by 25%
Mercedes-Benz Begins Road Tests of Solid-State Battery Electric Vehicle
In a groundbreaking development, Mercedes-Benz has commenced road testing a prototype electric vehicle (EV) powered by a lithium-metal solid-state battery. This cutting-edge technology promises to revolutionize EV performance, offering up to 40% more driving range compared to current lithium-ion batteries [1][2].
The prototype, based on a modified Mercedes EQS sedan, is the result of a collaboration between Mercedes AMG High-Performance Powertrains and solid-state battery specialist Factorial Energy [1][2]. The new battery technology features lithium-metal anodes and a unique floating cell carrier that expands and contracts during charging and discharging, enhancing durability and energy efficiency. Mercedes-Benz uses pneumatic actuators from its Formula 1 experience to manage the battery's physical changes, effectively giving the battery “lungs” for better performance and longevity [2].
Mercedes-Benz Chief Technology Officer Markus Schäfer has confirmed that this development underscores the brand’s commitment to innovation and sustainability. The company plans to bring solid-state batteries into series production before the end of the decade, with initial applications likely in high-end vehicles due to early high production costs [1][2][3].
The solid-state battery offers several potential benefits for EVs, including:
- Significantly extended driving range (up to 40% more than current technologies, with prototypes achieving over 600 miles or 1,000 kilometers on a charge) [1][2][3].
- Faster charging capabilities.
- Improved safety due to the solid electrolyte replacing flammable liquid electrolytes.
- Cost reductions anticipated over time as new chemistry and production scale mature, although early versions may be expensive [1][3].
- Enhanced battery longevity and stability due to new mechanical designs managing cell expansion and contraction [2].
These advancements mark a major step forward in EV battery technology, positioning Mercedes-Benz at the forefront of solid-state battery development. With pilot production and further refinement expected throughout the mid-to-late 2020s [1][2][4], this technology could set new standards for the automotive industry if its performance proves satisfactory.
[1] Mercedes-Benz Media Centre. (2025). Mercedes-Benz begins road testing of a pioneering lithium-metal solid-state battery. Retrieved from https://media.mercedes-benz.com/marsmedia/en/article/2025/mercedes-benz-begins-road-testing-of-a-pioneering-lithium-metal-solid-state-battery-1526633_1203554.html
[2] Factorial Energy. (2025). Mercedes-Benz and Factorial Energy collaborate to develop solid-state battery technology. Retrieved from https://factorialenergy.com/news/mercedes-benz-and-factorial-energy-collaborate-to-develop-solid-state-battery-technology/
[3] The Verge. (2025). Mercedes-Benz is testing a solid-state battery that could double the range of its electric cars. Retrieved from https://www.theverge.com/2025/2/1/22922648/mercedes-benz-solid-state-battery-electric-car-range-factorial-energy
[4] Green Car Reports. (2025). Mercedes-Benz begins testing solid-state batteries in EQS sedans. Retrieved from https://www.greencarreports.com/news/1133383_mercedes-benz-begins-testing-solid-state-batteries-in-eqs-sedans
- The automotive industry is set to experience a significant transformation with Mercedes-Benz leading the way, as they have begun road testing a prototype electric vehicle powered by a groundbreaking solid-state battery.
- The collaboration between Mercedes AMG High-Performance Powertrains and solid-state battery specialist Factorial Energy promises to revolutionize the finance sector, with the potential for solid-state batteries to be brought into series production before the end of the decade.
- The introduction of electric-vehicles in the transportation sector is expected to see improvements in safety, charging capabilities, and battery longevity, thanks to the development of solid-state batteries.
- As lifestyle trends shift towards sustainability, the use of solid-state batteries in high-end vehicles could shape technology advancements in the automotive industry, potentially setting new industry standards if performance proves satisfactory.
