Mercedes EQS with solid-state battery goes 749 miles on a single charge

A Mercedes EQS equipped with a solid-state battery has managed to go from Stuttgart, Germany all the way up to Malmo in Sweden, a distance of 749 miles, on one charge - and the remaining range was 85 miles when it arrived.

This journey was part of Mercedes' real-world testing phase of the lithium-metal solid-state battery technology, developed together with Mercedes-AMG High Performance Powertrains using cells from US-based manufacturer Factorial Energy.

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The EQS surpassed the previous record set by the Vision EQXX concept, which went from Stuttgart to Silverstone in the UK, by 1.9 miles. The EQS was, however, just "lightly modified" compared to what you'd be able to buy yourself (save for the battery tech being different, of course).

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The goal of such test runs, Mercedes says, is to "assess overall vehicle performance across different climate zones and route profiles and accelerate the path to series production". The weight and size of the solid-state battery "remain comparable to the standard EQS battery", while the usable energy content went up by 25%.

Markus Schafer, Mercedes' Chief Technology Officer, said:

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.