Factorial’s advanced solid-state battery cells also proved ultra-fast charging from 15% to 90% in just 18 minutes
That sounds quite underwhelming for a solid-state battery. But the energy density is great (375 Wh/kg according to the article).
Last September, Mercedes-Benz drove a modified EQS over 745 miles (1,200 km) using Factorial’s solid-state battery cells.
It appears that mercedes is at least 6 month ahead with the implementation.