Ultra-Fast Charging Rises Again, Reigniting the Charge-vs-Swap Debate

[Technology Pathways] BYD unveiled its second-generation Blade Battery and megawatt-level ultra-fast charging technology, while NIO’s Li Bin strongly endorsed battery swapping and questioned whether fast charging damages batteries.

Core Developments: 9-Minute Full Charge vs. 3-Minute Battery Swap

BYD claims its ultra-fast charging technology can add 400 km of range in just 5 minutes, and charge from 10% to 97% in only 9 minutes. In contrast, NIO insists battery swapping is more efficient and better preserves battery health, with Li Bin emphasizing, “If you can slow-charge, don’t fast-charge.”

Strategic Foundations: A Long-Term Battle Over Energy Replenishment Paths

Battery swapping represents a capital-intensive, high-efficiency model requiring significant investment, whereas ultra-fast charging leverages the existing power grid with lighter infrastructure needs and broader compatibility. Both sides are accelerating deployment—Skyworth announced 800 km of range in 8 minutes, and Chery also launched new fast-charging products.

Industry Impact: Mutually Exclusive or Coexistence?

BYD’s Li Yunfei stated the two approaches are “diverse yet convergent,” reflecting a growing industry consensus: different scenarios call for different solutions, with premium fleet vehicles favoring battery swapping and private car owners likely preferring fast charging.