The first automaker in the world to promise 1,000 real kilometers with a solid-state battery already has a production line set up, 50 cars in operation, and a date set for September 2026.

Written by Douglas Avila

Published on 19/04/2026 at 06:20

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With a density of 350 Wh/kg, a range of 1,000 km, charging of 450 km in 5 minutes, and production scheduled for September 2026, Dongfeng has taken the step that Toyota, BMW, and Tesla are still promising

While the world’s largest automakers are still treating solid-state batteries as a laboratory project, a Chinese manufacturer has already set up the production line.

Dongfeng Motor announced that it will begin mass production of its solid-state battery with 350 Wh/kg energy density in September 2026.

This density means, in practice, a range of over 1,000 kilometers on a single charge.

ARTICLE CONTINUES BELOW

The numbers that make a difference

The Dongfeng battery uses a high-capacity ternary cathode, silicon-carbon anode, and solid polymer oxide electrolyte.

Weighing just over 500 kilograms, the package achieves an approximate capacity of 180 kWh.

This is enough to travel 1,000 km considering an average efficiency of 180 Wh/km.

Moreover, the “Mach Ultra-kV” platform operates with an architecture of 1,200 volts and an internally developed 1,700V silicon carbide power module.

The high-speed motor spins at 30,000 rpm, contributing to the real range.

450 km in 5 minutes — and the system is automatic

The platform supports charging of up to 2 megawatts from a single gun.

In practice, this means 450 km of range restored in just 5 minutes.

Ultra-fast 2 MW charging station for electric vehicles — The system supports charging at 2 MW — equivalent to 450 km in 5 minutes, with integrated contactless payment

Additionally, the system includes automated charging and integrated contactless payment.

This way, the driver does not even need to leave the car to refuel.

Works at minus 30 degrees

One of the biggest problems with electric cars is the loss of range in the cold.

Conventional lithium batteries retain approximately 60% of capacity at -30°C.

The Dongfeng battery retains over 72% under the same conditions.

Moreover, the battery also passed thermal chamber testing at 170°C, well above the Chinese standard of 130°C.

Electric vehicle in extreme cold testing at minus 30 degrees Celsius — In extreme cold tests, Dongfeng’s solid-state battery maintained over 72% capacity at -30°C — compared to 60% of conventional batteries

Safety: alert 48 hours before a problem

The battery pack withstands impacts of 1,500 joules.

Additionally, a thermal monitoring system issues a degradation alert 48 hours in advance.

Thus, the risk of spontaneous combustion, which haunts lithium batteries, is drastically reduced.

From 2018 to today: 50 cars and 1.5 million km driven

Dongfeng began its research on solid-state batteries in 2018.

In 2019, it completed the first functional system.

In 2020, it integrated the technology into a real vehicle.

In 2022, it deployed the battery in the Dongfeng E70 sedan.

Since then, a fleet of 50 demonstration vehicles has accumulated over 1.5 million kilometers driven in 10 cities across six Chinese provinces.

The company already has a pilot production line of 0.2 GWh in operation.

Next generation: 500 Wh/kg with sulfide

Dongfeng has not stopped at 350 Wh/kg.

The company is already researching a next-generation battery based on sulfide, with a target density of 500 Wh/kg.

The fast-charging version of the current battery is scheduled for pilot installation in December 2027.

Important caveats

September 2026 is still a target date, not a guarantee.

There is still no confirmation of which models will receive the technology or if there will be international distribution.

Additionally, the range and charging data are based on ideal testing conditions, which may differ from real-world use.

Still, the fact that Dongfeng already has a demonstration fleet with 1.5 million km and an operational pilot line puts it ahead of competitors like Toyota, BMW, and Volkswagen, who are still in the prototype phase.

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The first automaker in the world to promise 1,000 real kilometers with a solid-state battery already has a production line set up, 50 cars in operation, and a date set for September 2026.

With a density of 350 Wh/kg, a range of 1,000 km, charging of 450 km in 5 minutes, and production scheduled for September 2026, Dongfeng has taken the step that Toyota, BMW, and Tesla are still promising

The numbers that make a difference

450 km in 5 minutes — and the system is automatic

Works at minus 30 degrees

Safety: alert 48 hours before a problem

From 2018 to today: 50 cars and 1.5 million km driven

Next generation: 500 Wh/kg with sulfide

Important caveats

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The first automaker in the world to promise 1,000 real kilometers with a solid-state battery already has a production line set up, 50 cars in operation, and a date set for September 2026.

With a density of 350 Wh/kg, a range of 1,000 km, charging of 450 km in 5 minutes, and production scheduled for September 2026, Dongfeng has taken the step that Toyota, BMW, and Tesla are still promising

The numbers that make a difference

450 km in 5 minutes — and the system is automatic

Works at minus 30 degrees

Safety: alert 48 hours before a problem

From 2018 to today: 50 cars and 1.5 million km driven

Next generation: 500 Wh/kg with sulfide

Important caveats

While in Brazil a 10-story building takes 2 years to complete, in China a company stacks pre-fabricated modules and raises the entire building in just 28 hours and 45 minutes.

The oldest tree in the world, alive since before the birth of Jesus Christ, is cut down in a scientific study and the case changes environmental preservation rules.

An entire island in the Pacific wants to surround itself with a colossal barrier against the ocean to try to escape increasingly violent waves and not be swallowed by the sea in the coming decades.

After ten days orbiting the Moon, science confirms that the astronauts of the Artemis II mission return with altered bodies.

Peru built a tunnel at an altitude of 4,738 meters cutting through the Andes Mountains, and the road leading to it reaches 4,818 meters, making it the highest paved road in the entire world.

Seen from space, an image taken by an astronaut shows in Argentine Patagonia the exact point where a colossal glacier, a turquoise-blue lake, and a greenish arm of water meet, creating one of the rarest and most impressive landscapes in the region.

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