Mercedes EQS Solid-State Battery Achieves 750-Mile Range on Single Charge

Mercedes-Benz have set a new benchmark for electric mobility. For years, the two biggest deterrents to EV adoption have been the charging network and range anxiety. Mercedes-Benz have just smashed any range concerns with their latest technical development.

Using a lightly modified EQS test vehicle, they drove from Stuttgart, Germany, to Malmö, Sweden, all without a single charging stop. That’s 1205km, or 748 miles, far more than the average ICE-powered car could manage on a single tank. 

The route followed the A7 and E20 through Germany and Denmark to Malmö, Sweden. The optimal route was calculated using Electric Intelligence, factoring in topography, traffic, ambient temperature, and energy needs for heating and cooling — without using ferries.

Mercedes-Benz have set a new benchmark for electric mobility. For years, the two biggest deterrents to EV adoption have been the charging network and range anxiety. Mercedes-Benz have just smashed any range concerns with their latest technical development.

Using a lightly modified EQS test vehicle, they drove from Stuttgart, Germany, to Malmö, Sweden, all without a single charging stop. That’s 1205km, or 748 miles, far more than the average ICE-powered car could manage on a single tank. 

The route followed the A7 and E20 through Germany and Denmark to Malmö, Sweden. The optimal route was calculated using Electric Intelligence, factoring in topography, traffic, ambient temperature, and energy needs for heating and cooling — without using ferries.

This revelation was achieved by utilising solid-state battery technology. The technology was closely developed with Mercedes-AMG High Performance Powertrains (HPP), the Formula 1 technology centre based in Brixworth.

US-based Factorial Energy supplies the lithium-metal cells utilised. To support the cells during the volume changes typical of this technology and to ensure the necessary contact pressure on the cells, the solid-state battery is equipped with pneumatic actuators. These actuators respond to changes in cell volume during charging and discharging, thereby ensuring the battery's flawless operation over time. The usable energy content of the battery was increased by 25%, while the weight and size of the battery remain comparable to the standard EQS battery. Additional weight and energy efficiency is achieved through passive airflow cooling

“The solid-state battery is a true game-changer 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.”
Markus Schäfer, Member of the Board of Management of Mercedes‑Benz Group AG, Chief Technology Officer, Development & Procurement