Stellantis Solid-State Battery Progress Advances with Factorial Validation

Factorial Energy

Stellantis solid-state battery progress has reached a major milestone as its partner Factorial Energy successfully validated automotive-scale solid-state battery cells. This development strengthens Stellantis goal of integrating next-generation batteries into vehicles by 2026.

Validated Cells Offer High Energy Density and Fast Charging

The newly validated cells deliver an impressive energy density of 375Wh/kg and can fast charge from 15% to 90% in just 18 minutes. These figures highlight the potential for significant improvements in electric vehicle (EV) range and charging convenience. The validation confirms the scalability of Factorial’s solid-state battery technology for automotive applications.

Stellantis, which invested $75 million in Factorial in 2021, views the collaboration as central to its electrification roadmap. The validated battery cells will power a demonstration fleet by 2026, showcasing the performance and safety of solid-state chemistry over conventional lithium-ion systems.

Design Collaboration Targets Weight and Efficiency Gains

Stellantis and Factorial are also focusing on optimizing battery pack architecture through joint engineering work. The goal is to reduce system weight and enhance efficiency—key factors in improving vehicle range, handling, and energy management.

This partnership exemplifies a growing trend among automakers to co-develop advanced battery platforms with startups. Stellantis is betting on solid-state batteries to gain a competitive edge in EV performance, safety, and manufacturability.

The Metalnomist Commentary

The Stellantis solid-state battery progress marks a turning point in commercializing next-gen EV batteries. With validation secured, the Stellantis–Factorial alliance positions itself among leaders aiming to bring high-density, fast-charging solid-state solutions to market within the decade.