Factorial Energy, a US-based battery technology company, has launched the first commercial solid-state battery program in the United States. The initiative is being rolled out through a partnership with Karma Automotive and marks a major step in bringing solid-state batteries from the lab into real-world vehicles.
Factorial is already working with major automakers including Mercedes-Benz, Stellantis, Hyundai, and Kia to advance next-generation battery technology.
Partnership with Karma Automotive
Factorial will supply its FEST (Factorial Electrolyte System Technology) quasi-solid-state batteries
The batteries will power Karma Automotive’s upcoming ultra-luxury electric vehicles
The collaboration will focus on validating solid-state battery performance in production passenger cars
First Vehicle: Karma Kaveya
The first model to use Factorial’s technology will be the Karma Kaveya, an ultra-luxury electric super-coupe.
Expected specifications:
Launch target: Late 2027 (US market)
Power output: Over 1,000 horsepower
Torque: 1,270 lb-ft
Driving range: 250+ miles
0–60 mph: Under 3.0 seconds
From Development Delays to New Momentum
Karma Automotive previously delayed the Kaveya’s launch in 2025, citing concerns about meeting its performance standards.
According to CEO Marques McCammon, the partnership with Factorial now provides:
A clear path to delivering an uncompromising luxury EV experience
More stable and advanced electrified drivetrain systems
Broader benefits for the US automotive industry
Proven Real-World Results
Factorial’s solid-state technology has already demonstrated strong performance:
In September, Mercedes-Benz drove a modified EQS equipped with Factorial cells 745 miles (1,200 km) on a single charge
Mercedes described the technology as “a true game-changer”
Key Advantages of FEST Batteries
Estimated range: 500–600+ miles
Weight reduction: Up to 40% lighter than conventional lithium-ion batteries
Manufacturing compatibility: Works with up to 80% of existing lithium-ion production equipment, reducing the need for new factories
Looking Ahead
Factorial says the Karma partnership will help accelerate large-scale adoption of next-generation battery technology in the US.
In December, the company also announced plans to:
Go public via a Nasdaq listing
Merge with Cartesian Growth Corporation III (SPAC)
Use the raised funds to fuel expansion and commercialization efforts
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