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Mercedes-Benz has set a new benchmark in electric mobility by successfully completing a long-distance, real-world test drive with a solid-state battery. A lightly modified Mercedes-Benz EQS test vehicle traveled 749 miles (1,205 km) from Stuttgart, Germany, to Malmö, Sweden, on a single charge. This impressive achievement showcases the significant potential and everyday usability of future solid-state battery technology, proving its performance capabilities beyond the laboratory.
Key Highlights
- Record-Breaking Distance: The vehicle traveled 749 miles (1,205 km) without any charging stops.
- Impressive Remaining Range: Upon arrival in Malmö, the EQS still had 85 miles (137 km) of range remaining.
- Advanced Technology: The test vehicle was equipped with a lithium-metal solid-state battery featuring cells from U.S.-based manufacturer Factorial Energy.
- Formula 1 Collaboration: The battery system was co-developed with Mercedes-AMG High Performance Powertrains (HPP), the Formula 1 technology center for Mercedes-Benz.
- Cross-Country Journey: The route spanned three countries, starting in Germany and passing through Denmark before reaching Sweden.
Real-World Validation
This long-distance drive is a critical part of a comprehensive validation program for solid-state battery technology at Mercedes-Benz. The journey from Stuttgart to Malmö followed announcements of road testing and adds a demanding real-world scenario to the program. The goal of these on-road tests is to assess the overall performance of the vehicle and battery across various climate zones and route profiles, accelerating its development for series production.
The route followed the A7 and E20 highways. For optimal planning, the trip was calculated using Electric Intelligence, which considers factors like topography, traffic, and ambient temperature to predict energy needs for propulsion, heating, and cooling. The journey demonstrated a new level of efficiency, surpassing the previous record set by the Vision EQXX on its Stuttgart–Silverstone route by nearly two miles.
Markus Schäfer, Member of the Board of Management of Mercedes‑Benz Group AG and Chief Technology Officer, stated, “The solid-state battery is a true gamechanger for electric mobility. With the successful long-distance drive of the EQS, we show that this technology delivers not only in the lab but also on the road. Our goal is to bring innovations like this into series production by the end of the decade and offer our customers a new level of range and comfort.”
Technology Background
The innovative solid-state battery system was developed in close partnership with Mercedes-AMG High Performance Powertrains (HPP) in the UK. The lithium-metal cells are provided by Factorial Energy and are based on its FEST® (Factorial Electrolyte System Technology).
A key feature of the battery is its use of pneumatic actuators. These components manage the volume changes that occur in the cells during charging and discharging, ensuring consistent contact pressure and flawless long-term operation. This advanced design increases the battery’s usable energy content by 25 percent while maintaining a size and weight comparable to the standard EQS battery. Further efficiency is gained through a passive airflow cooling system, reducing additional weight and energy consumption.
About Mercedes-Benz USA
Mercedes-Benz USA (MBUSA), headquartered in Atlanta, is responsible for the distribution, marketing and customer service for all Mercedes-Benz products in the United States. MBUSA offers drivers the most diverse lineup in the luxury segment with 18 model lines ranging from the sporty GLA SUV to the flagship S-Class and the dynamic all-electric vehicles from Mercedes-Benz. MBUSA is also responsible for Mercedes-Benz Vans in the U.S. More information on MBUSA and its products can be found at www.mbusa.com and www.mbvans.com. To learn more about all Mercedes-Benz entities in North America, visit group.mercedes-benz.com/northamerica.
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