Mercedes has modified an EQS to test its prototype lithium-metal solid-state battery and the results are already looking really promising, taking range from 488 to a theoretical 621 miles.

Mercedes-Benz and Factorial announced a prototype EQS equipped with a solid-state battery. Road testing has already started. Solid-state batteries promise more range, faster charging times and ...

Mercedes-Benz is testing a prototype EQS electric sedan fitted with a semi-solid-state battery pack co-developed ... batteries are regarded as the next key step in improving the range and ...