Featured Solid-state batteries are now powering EVs in the real world

Tideland Prius · Jun 12, 2026 at 1:49 PM

Jeep maker Stellantis and US-based Factorial Energy officially began testing the advanced new battery tech on the road, marking the first time solid-state batteries have been integrated into an EV in North America.

Factorial’s FEST (Factorial Electrolyte System Technology) solid-state battery cells were used to power a Dodge Charger Daytona development vehicle.

The milestone comes after Stellantis and Factorial validated that 77Ah FEST cells achieved an energy density of 375 Wh/kg with over 600 cycles last April.

Factorial’s advanced solid-state battery cells also proved ultra-fast charging from 15% to 90% in just 18 minutes, and maintained performance in extreme temperatures ranging from -22°F to 113°F (-30°C to 45°C). Plus, the cells deliver a discharge rate of up to 4C.

Moving the new battery tech from the lab to the real world wasn’t easy. Stellantis said transitioning the cells into a development vehicle “demanded advanced engineering solutions” from both companies.
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Solid-state batteries are now powering EVs in the real world

A bit of a baitclick. It should really test "SSB are now testing in the real world"

Featured Solid-state batteries are now powering EVs in the real world

Tideland Prius Moderator of the North
Staff Member

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Featured Solid-state batteries are now powering EVs in the real world

Tideland Prius Moderator of the North Staff Member

Tideland Prius Moderator of the North
Staff Member