Chinese EV Batteries Hit 620-Mile Range in Arctic Tests

Electric vehicles just got a major upgrade that could change everything about how far they can travel on a single charge.

Dongfeng Motor, one of China's largest automakers, announced this week that its new solid-state batteries successfully completed extreme cold-weather testing in Mohe, China's northernmost city. The batteries delivered over 620 miles of range even in temperatures plunging to -40°F.

The numbers speak volumes. These batteries pack 350 wh/kg of energy density and retain 72% of their power at -22°F, far outperforming current lithium-ion technology. Even more impressive, they survived a 338°F hot box test without catching fire or exploding, exceeding China's safety standards by over 70 degrees.

Dongfeng has already completed over 70 tests focusing on range, charging speed, and durability in brutal Arctic conditions. The company finished building a pilot production line, and the first batteries are already rolling off the assembly line.

The timeline looks promising. Dongfeng plans to install these batteries in vehicles by 2026, with full mass production launching by September of that year. That puts them years ahead of many competitors in the global race to perfect solid-state technology.

The Ripple Effect

This breakthrough extends far beyond one company's achievement. Mercedes-Benz drove 745 miles on a single charge using similar technology last September. Toyota, Honda, Nissan, Hyundai, and Volkswagen are all racing to bring their versions to market between 2027 and 2030.

The competition is driving innovation at breakneck speed. SAIC Motor, GAC Group, Changan Auto, CATL, and BYD are all developing their own solid-state batteries. Chinese and European automakers are pushing each other to solve the challenges faster, meaning consumers win no matter who crosses the finish line first.

The batteries will debut in premium vehicles around 2027 or 2028, then reach everyday cars by the end of the decade. As production scales up and costs drop, families driving to school or work could soon enjoy ranges that rival gas-powered cars without the emissions or fuel costs.

Range anxiety has been one of the biggest barriers keeping people from switching to electric vehicles. These solid-state batteries don't just address that concern; they eliminate it entirely, opening the door for millions more drivers to make the switch to clean energy transportation.