Mercedes-Benz EQS Achieves Remarkable 750-Mile Range with Solid-State Batteries





Mercedes-Benz has achieved a groundbreaking milestone in electric vehicle technology, demonstrating the immense potential of solid-state batteries. A specially modified Mercedes EQS sedan completed an extraordinary journey of 750 miles on a single charge, with significant range still remaining. This remarkable feat, confirmed by Mercedes' technical leadership, positions solid-state battery technology as a pivotal advancement for the future of electric mobility. The successful real-world test underscores the significant progress in energy density and efficiency, paving the way for EVs that can rival traditional gasoline vehicles in terms of travel distance and convenience.
In February, Mercedes-Benz initially introduced a prototype EQS model featuring a lithium-metal solid-state battery, claiming an estimated real-world driving range of over 620 miles. However, the latest rigorous testing has surpassed these initial projections, with the vehicle far exceeding expectations. Markus Schäfer, Mercedes’ chief technology officer, emphasized the transformative impact of this new battery chemistry, stating that it performs exceptionally well not only in laboratory conditions but also under actual driving scenarios.
The demanding test journey saw the modified EQS travel from Stuttgart, Germany, to Malmö, Sweden, covering a total distance of 1,205 kilometers (approximately 750 miles). Crucially, upon arrival, the vehicle still retained an additional 85 miles of range, highlighting the impressive energy retention capabilities of the solid-state battery system. This extended range capability could alleviate range anxiety, a common concern among electric vehicle users, and make EVs a more viable option for long-distance travel.
Mercedes-Benz reports that the solid-state battery utilized in the test vehicle provided a 25% increase in usable energy compared to conventional batteries, while maintaining a comparable weight and physical footprint to a standard EQS model. This efficiency gain, without a significant penalty in vehicle mass or design, is a crucial factor in practical EV development. The development of this advanced battery technology is a collaborative effort between Mercedes and its Formula 1 supplier, Mercedes-AMG High Performance Powertrains (HPP), leveraging expertise from high-performance automotive engineering.
The battery cells themselves are sourced from Factorial Energy, a US-based company actively engaged in partnerships with several major automotive manufacturers, including Hyundai and Stellantis. Mercedes has publicly stated its ambition to integrate solid-state battery technology into series production vehicles before the end of the current decade. This commitment aligns with the broader industry trend, as numerous global automakers, such as Volkswagen, Toyota, BMW, Nissan, and Honda, are also intensely pursuing the development of solid-state batteries, recognizing them as the 'holy grail' for enhancing EV performance. Leading battery manufacturers like CATL and BYD are also aiming to commercialize this technology around 2027, signaling a competitive race towards a new era of electric vehicle power.
This pioneering achievement by Mercedes-Benz, demonstrating an extended driving range with solid-state batteries, marks a significant leap for the electric vehicle industry. It proves the feasibility of substantial improvements in battery performance, promising greater autonomy and convenience for future EV owners. The successful integration of this technology into production vehicles could accelerate the global transition to electric mobility, offering a cleaner and more efficient alternative to traditional fuel sources.