Stellantis’ solid-state batteries can fast-charge in just 18 minutes
Published on: 2025-08-15 15:00:00
is transportation editor with 10+ years of experience who covers EVs, public transportation, and aviation. His work has appeared in The New York Daily News and City & State.
Stellantis says its solid-state batteries are getting closer to reality. The parent company of brands like Jeep, Dodge, Ram, and many others is working with startup Factorial on the new batteries, which have just been successfully validated for automotive use and will be installed in a demonstrator fleet in 2026.
Most EVs use “wet” lithium-ion batteries containing liquid electrolytes to move energy around. Solid-state batteries, which have been slow to come to market, promise faster charging speeds, more capacity, and longer range vehicles.
Stellantis and Factorial call the new packs Factorial Electrolyte System Technology, or FEST, arguing that unlike conventional lithium-ion batteries, the solid-state batteries have higher density and can support faster charging. Think 15-90 percent in just 18 minutes at room
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