- Dongfeng Motor targets mass production of 350 Wh/kg solid-state batteries in late 2026.
- The batteries are expected to enable electric vehicles to achieve more than 1,000 km driving range.
China-based Dongfeng Motor is preparing to enter a new phase of battery commercialization, with its next-generation solid-state batteries scheduled for mass production and vehicle integration during the second half of 2026. The development represents a significant milestone in the company's long-term battery technology roadmap and highlights growing efforts to improve electric vehicle performance, safety, and driving range through advanced energy storage solutions.
Next-Generation Battery Targets Large-Scale Deployment
The upcoming solid-state battery developed by Dongfeng Motor delivers an energy density of up to 350 Wh/kg, positioning it among the earliest high-energy-density solid-state batteries in China intended for large-scale automotive deployment. Vehicles equipped with the technology are expected to achieve a pure-electric driving range exceeding 1,000 kilometers, supporting longer-distance travel while reducing the need for frequent charging stops.
Key Performance Specifications of Dongfeng’s Solid-State Battery
| Parameter | Performance |
|---|---|
| Energy Density | 350 Wh/kg |
| Expected EV Range | More than 1,000 km |
| Low-Temperature Charge Retention | Over 74% at -30°C |
| Thermal Resistance | Up to 170°C |
| Battery Pack Weight Reduction | 30% lighter |
Cold Weather and Safety Validation Results
Earlier in 2026, a Dongfeng eπ test vehicle equipped with the 350 Wh/kg solid-state battery completed more than 70 validation tests in the extreme cold environment of Mohe, China. Test findings demonstrated that low-temperature performance improved by more than 10%. Even when exposed to temperatures as low as -30°C, the battery maintained over 74% of its charge. Safety testing also showed strong thermal resilience, with the battery capable of withstanding temperatures up to 170°C, significantly above the national test requirement of 130°C.
Weight Reduction and Efficiency Benefits
Beyond energy density and safety improvements, the complete battery pack is approximately 30% lighter than conventional lithium battery packs. Lower battery weight can contribute to improved vehicle efficiency, enhanced range capability, and greater flexibility in vehicle design. These characteristics are increasingly important as manufacturers seek to balance performance, safety, and cost while accelerating electric vehicle adoption.
Development Journey from Research to Pilot Production
Dongfeng Motor established its dedicated solid-state battery project team in 2018 with a focus on developing highly safe, automotive-grade, high-specific-energy battery technologies. The company completed its first-generation solid-state battery system in 2019. A major milestone followed in December 2021 when Dongfeng secured China’s first market entry approval for a passenger vehicle powered by a solid-state battery and subsequently deployed 50 demonstration vehicles.
The demonstration fleet has accumulated more than 3.2 million kilometers of safe operation, providing valuable real-world validation data. In June 2025, Dongfeng further strengthened its development ecosystem by completing and commissioning its solid-state battery laboratory along with a 0.2 GWh pilot production line. These facilities established a complete pathway linking research, testing, manufacturing preparation, and future mass production.
Future Battery Technology Roadmap
Dongfeng Motor is continuing research activities focused on fast-charging solid-state batteries and next-generation automotive battery technologies offering even higher energy density. According to the company’s development roadmap, its next high-specific-energy battery platform is expected to be installed in vehicles beginning in 2027. These efforts reflect the company's objective of advancing battery performance while supporting the broader evolution of electric mobility in China and global markets.
Frequently Asked Questions
When will Dongfeng Motor begin mass production of its next-generation solid-state batteries?
Dongfeng Motor plans to start mass production and vehicle installation of its next-generation solid-state batteries during the second half of 2026. The batteries have already undergone extensive validation, including extreme cold-weather testing and safety assessments. The company has also established a pilot production line and dedicated laboratory to support commercialization. These developments position Dongfeng to transition from testing and demonstration programs toward large-scale deployment in production electric vehicles.
What advantages does Dongfeng’s 350 Wh/kg solid-state battery provide?
The 350 Wh/kg solid-state battery offers a combination of high energy density, long driving range, enhanced safety, and reduced weight. Vehicles equipped with the battery are expected to achieve more than 1,000 kilometers of pure-electric range. The battery retains over 74% charge at -30°C, withstands temperatures up to 170°C, and reduces battery pack weight by approximately 30% compared with conventional lithium battery systems, supporting improved vehicle efficiency and performance.
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