620-mile solid-state EV coming in 2026 as Chinese automaker tests battery from –22°F to 266°F

Chinese carmaker Dongfeng is set to launch a car powered by solid-state EV batteries that can offer more than 600 miles of range.

Solid-state EV batteries have been dubbed the ‘holy grail’ of battery technology, offering more range, faster charging times, and improved safety. 

Currently, there are several carmakers, including Toyota and BMW, working away on bringing the next-generation batteries to market. 

However, it seems as though Dongfeng could be set to pip them to the post after announcing it plans to deploy solid-state EV batteries into its cars as early as next year. 

DISCOVER SBX CARS – The global premium auction platform powered by Supercar Blondie 

Dongfeng says solid-state EV batteries will be introduced in 2026

For now, semi-solid-state EV batteries are already in use, and could be about to revolutionize electric bikes. 

However, as yet, full solid-state EV batteries aren’t on the market.

But that’s all set to change next year, with Dongfeng confirming it will be introducing solid-state batteries to its EVs in September next year, months ahead of the proposed 2027 date Toyota is said to be working towards.

According to a report in Car News China, the new technology has an energy density of 350 Wh/kg and will offer more than 620 miles of range between charges, making range anxiety a thing of the past. 

As yet, the Chinese carmaker hasn’t revealed how fast the new battery will be capable of charging, but the company has previously showcased its Mach Super-kV Pure-Electric Platform, which features a 1,200 V architecture that allows 2,000kW charging. 

In real terms, this means it could top up a battery at a rate of 1.5 miles per second, or 280 miles in just five minutes. 

Impressive stuff, right?

The new technology has been through extreme testing

With plans for the solid-state battery to enter production in less than 12 months, Dongfeng has been busy testing the new technology. 

According to the report in Car News China, the carmaker tested the battery in extreme temperatures as low as -22°F and found that it still retained 72 percent of its overall capacity. 

It also passed a thermal-chamber safety test, where it was tested on the other end of the scale, at temperatures as high as 266°F. 

DISCOVER SBX CARS: The global premium car auction platform powered by Supercar Blondie