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Mercedes-Benz And Formula 1 Engineers Launch Road Tests For Innovative Solid-State Battery Technology
Mercedes-Benz has embarked on a new journey with its innovative solid-state battery technology, promising a safer, lighter, and more efficient driving experience. This advancement offers a 25% longer range in their first vehicle due to higher energy density and reduced weight. The collaboration with Mercedes AMG High Performance Powertrains (HPP) in the UK has led to the development of this cutting-edge battery system.
The solid-state battery, integrated into a modified EQS Sedan, uses cells from Factorial Energy, a leader in the field based in the U.S. Road tests for this new battery began in February 2025 with a prototype vehicle. This marks the first time a lithium-metal solid-state battery is being tested on roads, showcasing its potential beyond laboratory settings.
Mercedes-Benz engineers collaborated closely with Factorial's team to create an all-new test program for these batteries. The result is a vehicle that not only performs well but also sets a new standard for electric mobility. Markus Schäfer from Mercedes-Benz Group AG highlighted their commitment to innovation and sustainability through this project.
Factorial Energy's CEO, Siyu Huang, expressed pride in successfully integrating lithium-metal solid-state batteries into production vehicles. This achievement demonstrates that such technology is now viable for real-world applications, setting benchmarks for the automotive industry. Their FEST® (Factorial Electrolyte System Technology) platforms are key to this success.
The partnership between Mercedes-Benz and Factorial began in 2021 to develop next-generation battery technology. In mid-2024, Factorial delivered lithium-metal solid-state battery cells to Mercedes-Benz, marking their first B sample shipment to a global original equipment manufacturer (OEM).
Technical Innovations
The solid-state battery features an innovative floating cell carrier designed by Mercedes-Benz, which has already been patented. This design accommodates volume changes during charging and discharging by using pneumatic actuators that interact with cell volume changes. Such innovations enhance performance and lifespan.
This advanced battery allows for up to 25% more electric range compared to standard EQS batteries of similar weight and size. Passive cooling contributes further to weight reduction and energy efficiency. The test vehicle is expected to achieve over 621 miles per charge.
Future Prospects
Over the coming months, extensive laboratory and road tests will continue to evaluate the overall performance of these batteries in electric vehicles. The goal is to gather insights for potential series integration of this advanced technology into future models.
Mercedes AMG High Performance Powertrains plays a crucial role in transferring Formula 1 technologies into high-performance automotive projects like this one. Their expertise ensures rapid adaptation of cutting-edge innovations into practical applications.
About Key Players
Mercedes AMG High Performance Powertrains operates from Brixworth, Northamptonshire, designing and manufacturing Formula 1 power units since 1984 under various names before becoming part of Mercedes-Benz Group AG in 2005. They have been instrumental in bringing F1 technologies into mainstream automotive projects.
Factorial Inc., headquartered in the U.S., leads advancements in solid-state battery technology offering longer range per charge and increased safety compared to conventional lithium-ion batteries. Their proprietary platforms ensure seamless integration with existing manufacturing processes.
This collaboration between Mercedes-Benz and Factorial Energy represents a significant step forward in electric vehicle technology, demonstrating that the future of sustainable mobility is within reach today.
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