CATL claims new 5C battery lasts 1.8M km, even under ultra-fast charging
CATL battery pack retains 80% of its capacity after 3,000 cycles or 1.8 million kilometers, the battery maker shared. Its life cycle is six times the current industry average, IT Home reports.
The 5C battery was introduced in an official video published January 29, 2026, titled 5C Charging: 1,000,000 KM Made Easy. CATL positions the technology as a breakthrough in ultra-fast-charging durability, with performance that may exceed the vehicle’s lifespan.
Under extreme heat conditions of 60°C, described in the video as comparable to Dubai summer temperatures, the battery reportedly maintains 80% capacity after 1,400 cycles, equivalent to roughly 840,000 kilometers. This performance exceeds typical commercial lithium-ion cells currently available.
The “C” rating indicates the charge and discharge rate. A 5C battery can complete a full charge in about 12 minutes, placing it in the ultra-fast charging category. Achieving this requires the battery to maintain structural stability and thermal safety during high-rate operation.
CATL attributes the improved cycle life to three main technological innovations. First, a denser, more uniform cathode coating reduces structural degradation and limits metal-ion loss during high-rate charging and discharging. Second, a proprietary repair additive in the electrolyte identifies and seals microcracks while reducing irreversible lithium loss. Third, a temperature-responsive coating on the separator surface slows ion migration when local temperatures rise, providing self-regulating protection and reducing the risk of thermal runaway.
The battery management system has also been upgraded. The new system can direct coolant to hotspots within the battery pack, improving thermal consistency and extending overall pack lifespan. CATL states this approach enhances everyday usability for electric vehicles.
CATL began developing ultra-fast charging technology in 2020 and launched its first-generation 4C Qilin battery in 2023. The new 5C battery is designed to meet growing demand for rapid charging and lower total lifecycle costs, particularly for high-frequency applications such as electric heavy trucks, taxis, and ride-hailing vehicles.
As of February 2026, CATL has not announced a mass-production schedule or specified which vehicles will be the first to use the upgraded 5C battery. Analysts suggest that early applications may include high-end passenger or commercial vehicles, with broader market adoption expected later.
Updated: 03/02/2026 12:45 China time
