Stellantis and Factorial Plan a "Quasi-Solid" Electrolyte Battery By 2027

by Chris Teague

Published: April 25th, 2025

stellantis and factorial plan a quasi solid electrolyte battery by 2027

Dodge’s electric Charger Daytona hasn’t been the immediate sales success the automaker needed, but the car is scheduled to get an innovative new battery system that could change its fortunes. Dodge’s parent company, Stellantis, recently announced a new partnership with Factorial that will bring solid-state batteries to the car as early as 2027.

Solid-state EV batteries promise better energy density, a lighter weight, and a safer design, but manufacturers haven’t yet figured out how to produce them on a commercial scale. That said, Factorial’s battery isn’t fully solid-state. It uses the Factorial Electrolyte System Technology (FEST), which it considers a “quasi-solid” electrolyte.

Factorial hasn’t given any details on the FEST technology, but said that it had begun shipping test batteries to Stellantis, Mercedes-Benz, and Hyundai. Stellantis’ testing apparently yielded strong enough results for Dodge to use the battery system in a refreshed Charger in 2027. Factorial claims an energy density of 177 watt-hours per pound, which ranges from double to quadruple the densities found in today’s packs.

The FEST batteries also promise fast charging and discharge, with the company estimating 18 minutes for the system to charge from 15 to 90 percent. Stellantis will be able to use fewer battery cells to store the same amount of energy that today’s batteries hold, making the car lighter, though significant questions remain about the batteries’ scalability and widespread rollout. Those questions grow even louder when you consider the difficulties Stellantis has faced with the quality and reliability of its existing electrified vehicles.

[Images: Stellantis]

Become a TTAC insider. Get the latest news, features, TTAC takes, and everything else that gets to the truth about cars first by subscribing to our newsletter.

#Stellantis #factorialbatteries #solidstatebatteries #dodgeevs

Chris Teague

Chris grew up in, under, and around cars, but took the long way around to becoming an automotive writer. After a career in technology consulting and a trip through business school, Chris began writing about the automotive industry as a way to reconnect with his passion and get behind the wheel of a new car every week. He focuses on taking complex industry stories and making them digestible by any reader. Just don’t expect him to stay away from high-mileage Porsches.

More by Chris Teague

Comments

Join the conversation

2 of 22 comments

Lorenzo on Apr 26, 2025

This shows to go you that EV tech is still in its infancy. They may have gotten past Henry Ford’s recommendation that you tear down and rebuild the engine after 10,000 miles, but there is a lot of development left to do. Meanwhile, there is money to be made with roving ICE vehicles with gasoline-powered generators to relieve range anxiety.

2 Reply
Bigfoot on Apr 28, 2025

The new electric Charger Daytona is not a success because no one wants it. The people that buy muscle cars want the Hemi Motors.

Like Reply

Recent Comments

MaintenanceCosts We need a $15k EV, probably a tall hatch, that satisfies US safety standards with reasonable comfort and durability and a warranty. That would actually be affordable to the median wage earner.
Calrson Fan I'll take a simple over cheap. Although that should equate to cheap or at least cheaper. I'm so over all the useless & intrusive tech. common in today's cars & trucks. Which is why I drive older stuff. We need more vehicles geared towards simplicity and longevity, like the Slate. if that ever makes it to market. As I once heard on American Hot Rod, less is more. Isn't that the truth!
28-Cars-Later Maybe it will eventually change but as of right now even if you spend the money to build these stations everywhere, if the electricity sold is 100%+ of what its sold for in residential rates it will never take off. To a degree a convenience charge amount (of not 100%) could fly but smart owners will understand the trade off and limit their use of it. Those without home charging capabilities simply won't continue to pay through the nose on electricity - a utility of which has skyrocketed even wholesale and I suspect will continue to do so.
KOKing Need and want are definitely different, especially today. Not only are relative expectations different from 40-50yrs ago, but used cars' value/features/quality probably make them more attractive options than a couple generations ago. I suspect for the same $21k as a Hyundai Venue, a lot of people would choose a ~5yr old Ford Explorer instead. Today's gas prices might make some think twice, but a lot of the same people probably won't think as far as repair costs.I think something interesting to look at in other global markets where historically cheap, small cars continue to be available, where cheap Chinese cars are becoming available, whether the latter end up quickly displacing the former in the low-cost segment long-term (I suspect yes).
Lorenzo What the American market needs is a 1997 Honda Civic EX in coupe or sedan form, fully loaded like in 1997 at 1997 prices ($19K) or a slightly bigger 1997 Nissan Altima GXE sedan with the larger 2.4L engine and reliable Jatco automatic for about the same price. I have owned both, and wish I had either one back so I could get rid of the keyless Cr**p, the drive-by-wire, and the touch screen, and operate the car myself with buttons and knobs..