Hongqi and CNET have completed performance testing on a co-developed ultra-fast charging battery. Charging from 10% to 70% SOC takes just 3 minutes 41 seconds, while 10% to 97% takes 8 minutes 3 seconds. The breakthrough relies on 12C ultra-fast charging cell technology and intelligent thermal management.
Test Results: Industry-Leading Charging Efficiency
In July 2026, Hongqi, a subsidiary of China FAW, completed performance testing on an ultra-fast charging battery co-developed with CNET at 25°C ambient temperature. According to official data from China FAW, the battery charges from 10% to 70% state-of-charge (SOC) in just 3 minutes and 41 seconds, and from 10% to 97% SOC in only 8 minutes and 3 seconds.
This represents a significant leap over current mainstream fast-charging batteries, which typically require 30-40 minutes for a 10%-80% charge. Hongqi's technology compresses charging time to mere minutes, approaching the refueling experience of internal combustion engine vehicles.
Core Technology: The 12C Ultra-Fast Charging Cell
The breakthrough centers on 12C ultra-fast charging cell technology. C-rate is the key metric for battery charging speed, and 12C means the battery can theoretically be fully charged in 1/12 of an hour — approximately 5 minutes.
Key innovations enabling this performance:
- High-efficiency ultra-fast charging anode: Overcomes charging rate bottlenecks and accelerates lithium ion intercalation
- Proprietary low desolvation energy electrolyte: Reduces lithium ion migration barriers for faster ion conduction
- Composite carbon source coating and bulk-phase doping: Reduces internal resistance by 15% compared to similar products
| Technical Dimension | Hongqi Ultra-Fast Battery | Industry Mainstream |
|---|---|---|
| Charging Rate | 12C | 2-4C |
| 10%-70% SOC Time | 3 min 41 sec | 20-35 min |
| Internal Resistance Reduction | 15% | 5-10% |
| Temperature Difference | ≤3°C | 5-10°C |
Thermal Management and Safety
The battery integrates an intelligent uniform-temperature liquid cooling system. China FAW claims the temperature difference across the entire pack is kept within 3°C during fast charging, effectively preventing localized overheating that could degrade performance or create safety hazards.
Paired with a full-scenario hierarchical temperature control strategy, the system adapts to conditions from driving to parking, ensuring optimal operating temperatures while minimizing thermal management energy consumption.
For charging safety, the system employs a fast-charging adaptive strategy based on safety boundaries:
- Real-time monitoring and limiting of cell temperature rise rates
- Dynamic adjustment of charging power curves
- Real-time closed-loop verification of cell voltage and charge levels
- Algorithmic prevention of overcharging and overvoltage
Market Significance
Hongqi stated that this successful validation marks a significant phased breakthrough in power battery innovation. For global NEV markets, the maturation of ultra-fast charging technology will effectively alleviate range anxiety. For buyers in Central Asia, Russia, and other cold-climate regions, improved fast-charging capabilities will significantly enhance the winter driving experience. For more information on Chinese NEV technology, visit EX1000.COM.
