The Debate Between Flash Charging and Battery Swap Technologies

[Technology Pathways] BYD's second-generation Blade Battery achieves a 97% charge in just 9 minutes, reigniting the debate over energy replenishment methods.

Core Developments: Li Bin States Battery Swapping and Flash Charging Are Not Mutually Exclusive

Li Bin, founder of NIO, emphasized that battery swapping and flash charging address different usage scenarios. The NT3.0 platform supports both 5C/6C ultra-fast charging and battery swapping. Li Yunfei of BYD also noted that both approaches are "different paths leading to the same goal," aiming to replicate or surpass the refueling experience of internal combustion engine vehicles.

Key Data: Fast Charging Poses Real Battery Degradation Risks

Studies show that vehicles frequently using fast chargers above 100kW suffer an annual battery degradation rate of 2.5%, nearly double that of slow charging (1.5%). For every 1C increase in fast-charging current, polarization voltage rises by 50–80 mV, and under high temperatures, degradation further increases by 40%–60%.

Strategic Foundation: Both Approaches Require Additional Battery Reserves

Battery swap stations are essentially a combination of "batteries + swapping infrastructure + ultra-fast chargers," while flash charging stations similarly rely on spare batteries for buffering. Both models involve comparable heavy asset investments, indicating greater complementarity than competition between the two technological pathways.