Solid-state batteries promise greater range (800+ miles) and are being tested by various automakers, with small-scale production anticipated by 2027.

Alert: Solid-State Batteries Promise 800-Mile Range with Production Expected by 2027

Solid-state batteries are emerging as the holy grail of battery technology for electric vehicles, promising higher energy density, longer lifespan, and improved safety. The challenge lies in taking this innovation from the lab to the real world.

Arrival of 800-Mile Range

Chinese automakers are already testing the technology in vehicles. BYD and CATL plan to start small-scale production in 2027. In parallel, the practice of bringing the technology to the end-user is gaining momentum.

• Dongfeng Motors tested a prototype in extreme cold conditions, with an energy density of 350 Wh/kg, claiming a range exceeding 1,000 km (620 miles) under CLTC.
• Changan Automobile claims to start test installations by the end of the third quarter of 2026; with a density of 400 Wh/kg, the Golden Bell battery pack can deliver over 1,500 km CLTC range.
• Chery, another major Chinese manufacturer, announced on Weibo that it will hold a Battery Night event on March 18th to present its advancements.
• Chery had previously showcased a solid-state battery prototype in October with a density of up to 600 Wh/kg, and CarNewsChina cites that this pack could offer over 1,500 km CLTC range. The company plans to start testing this year in limited applications, aiming for mass adoption in 2027.

Global Outlook and Ongoing Research

On the international front, other regions—Japan, Europe, Korea, and the US—are also accelerating development. In September, Mercedes began operating a modified EQS with 106 Ah solid-state cells supplied by Factorial Energy, consolidating cooperation with the new generation of batteries.

• Factorial launched the first commercial solid-state battery program in the US, in partnership with Karma Automotive.
• In an interview with The New York Times, Huang stated that these batteries could arrive in vehicles as early as 2027.
• Factorial's Solstice platform achieves up to 450 Wh/kg, about 80% denser than traditional lithium-ion batteries, promising over 600 miles of range.
• The company maintains partnerships with OEMs like Mercedes-Benz, Stellantis, Hyundai, and Kia to promote the new generation.

What This Means for the Future of EVs

Although 600, 800, or 1,000 miles seem higher than average needs, the innovations show that electric vehicles will become more efficient and safer, with a real increase in range becoming an increasingly near reality.

Leave in the comments: do you believe solid-state batteries will truly revolutionize EV range? Which manufacturer do you think will lead this race?