Mercedes-Benz engineers, alongside their counterparts at Factorial Vitality, have efficiently launched an modern solid-state battery take a look at program, ensuing within the first car powered by a lithium-metal solid-state battery.
The initiative is spearheaded by Mercedes AMG Excessive Efficiency Powertrains (HPP), an entirely owned subsidiary of Mercedes-Benz Group recognized for its experience in Formulation 1 applied sciences. Alongside the Mercedes-Benz Middle of Competence for Battery Programs, they’ve developed a complicated battery system that blends high-performance automotive tasks with cutting-edge racetrack know-how.
Following in depth testing on varied platforms, the prototype solid-state battery was built-in into an EQS by late 2024. This all-electric car underwent slight modifications to accommodate the brand new battery system and included all needed elements for its operation. Preliminary laboratory exams have been performed in Stuttgart in the direction of the tip of 2024, setting the stage for real-world street exams that commenced in February 2025.
Markus Schäfer, Member of the Board of Administration of Mercedes-Benz Group AG and Chief Know-how Officer, remarked, “The event of an automotive-scale solid-state battery highlights our dedication to innovation and sustainability. We’re thrilled to undertake street testing with a prototype car that includes this superior know-how, which is able to present important insights for future manufacturing integration.”
Strong-state batteries symbolize a big development in electrical mobility, using a stable electrolyte slightly than a liquid one. This design enhances security and permits using lithium steel anodes, enabling substantial enhancements over conventional lithium-ion batteries. The potential vitality density for car batteries may attain as much as 450 Wh/kg on the cell stage, enhancing the driving vary of electrical autos. Gravimetric vitality density, an necessary metric, measures the vitality saved per unit mass, and solid-state know-how guarantees to scale back battery weight whereas enhancing security.
Siyu Huang, CEO and Co-Founding father of Factorial Vitality, said, “Efficiently integrating lithium steel solid-state batteries right into a manufacturing car platform is a landmark achievement in electrical mobility. This breakthrough signifies that solid-state know-how is transitioning from the lab to real-world functions, setting a brand new trade customary. Our partnership with Mercedes-Benz illustrates that the way forward for electrical autos is just not merely a dream, however a actuality we’re actively creating.”
Collaborating with motorsport consultants at HPP, the Mercedes-Benz Middle of Competence for Battery Programs has produced a prototype solid-state battery that includes cells from Factorial. A patent has been granted for the modern floating cell provider design, which accommodates the growth and contraction of supplies throughout charging and discharging. Pneumatic actuators throughout the battery help these quantity adjustments, positively impacting efficiency and longevity.
The solid-state battery built-in into the EQS-based car is predicted to supply as much as 25% extra driving vary relative to the scale and weight of a standard EQS battery. With passive cooling designs added for additional effectivity, the event car goals for a variety exceeding 1,000 km (620 miles). For context, the present EQS 450+, which makes use of a 118 kWh battery, already boasts a powerful vary of over 800 km (497 miles).
Within the upcoming months, Mercedes-Benz will proceed to judge the solid-state battery’s general efficiency by way of in depth laboratory and street exams. The corporate partnered with Factorial in 2021 to pioneer this new technology of battery know-how. In the summertime of 2024, Factorial efficiently delivered lithium-metal solid-state battery cells using their proprietary FEST (Factorial Electrolyte System Know-how) platform to Mercedes-Benz, marking a big milestone as the primary cargo of this know-how to a worldwide authentic gear producer (OEM).
February 24, 2025
Blagojce Krivevski
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