How fast can China's EVs charge?

Chinese automakers are pushing the boundaries of electric vehicle (EV) charging speed in an effort to quell consumer range anxiety and boost market demand. Companies like Geely, BYD, and Li Auto are racing to develop ultra-fast charging technologies that could rival a traditional gasoline fill-up.

Ultra-fast charging presents significant engineering challenges, including the risk of battery overheating, degradation, and even potential power grid failures. To address these concerns, manufacturers are turning to cutting-edge hardware solutions and artificial intelligence (AI) technologies.

Geely recently unveiled a charging setup capable of charging an EV from 10% to 70% in just 4.5 minutes, and from 10% to 97% in 8 minutes and 40 seconds. BYD's flash-charging systems and blade batteries can charge a vehicle from 10% to 97% in 9 minutes. Li Auto's EVs equipped with CATL's 5C Kirin battery can add up to 500 km (310 miles) of range in 12 minutes.

Battery maker Sunwoda claims its flash-charging system can charge from 10% to 97% in just 9 minutes. Meanwhile, Tesla's Supercharger typically requires 15 to 25 minutes for a 10% to 80% charge, compared to the rapid charging times offered by Chinese EV makers.

Safety risks are a major hurdle in ultra-fast charging, with intense heat and battery degradation posing significant threats. Chinese automakers are tackling these challenges through advanced hardware engineering and AI-driven temperature monitoring systems. Geely's full-loop five-end liquid cooling network, for instance, circulates fluid through charging stations, storage batteries, cables, and vehicle charging ports to keep batteries stable.

To ensure battery longevity, automakers are experimenting with specialized coatings and high-frequency pulse currents. Meanwhile, BYD plans to install 90,000 ultra-fast charging stations by 2028 and NIO has over 4,000 battery-swap stations where a full battery replacement takes about three minutes.