The Solid-State Battery Company That Just Put 750 Miles on a Mercedes on a Single Charge

Monroe Live sits down with Raymond, VP of Business Development at Factorial Energy, to walk through the company's two platforms: FEST (a quasi-solid electrolyte built to slot into existing lithium-ion production lines) and Solstice (fully solid-state with a ceramic electrolyte stable to 200°C). The headline number: a modified Mercedes EQS drove 1,250 km on a single charge with range still remaining. Factorial's 100-amp-hour cells have reached 3,000 cycles in R&D, and their Gamatron digital twin can predict cycle life from as few as 10 to 15 cycles rather than waiting a year for the data. Partners include Mercedes-Benz, Stellantis, and Hyundai/Kia. The target: production-ready cells in premium vehicles before 2030.