Introduction

Coexistence and Complementarity: The Ultimate Solution for Energy Replenishment

When BYD pushed the energy replenishment efficiency of its flash charging technology to a new height—recharging 400 kilometers of range in just 5 minutes—the entire internet began discussing one topic: Is the battery swapping model about to be left in the dust?

NIO CEO William Li's statement, 'No matter how fast ultra-fast charging gets, it can't match the speed of battery swapping,' further fueled the intensity of this debate. On social media, voices claiming 'NIO has no future' and 'Battery swapping just became profitable and was blindsided by flash charging' were rampant.

However, when we look beyond the noise of public opinion and examine the technical essence, market scenarios, and industry layout, it becomes clear that this competition in the energy replenishment sector has never been a zero-sum game where one must lose for the other to win.

BYD's flash charging brings electric vehicle (EV) energy replenishment closer to the experience of refueling a gasoline-powered car. Meanwhile, CATL's release of China's first interoperability standard for battery swapping systems has shifted battery swapping from a brand-specific ecosystem to industry-wide sharing. NIO's adherence to the vehicle-battery separation model addresses a core pain point in the new energy industry.

All signs indicate that, under the overarching trend of electrification, the diversification of energy replenishment technologies is the ultimate solution.

The Barriers to Battery Swapping Are Finally Being Broken Down

For a long time, the lack of standardized protocols has been the biggest bottleneck restricting the large-scale development of the battery swapping model, trapping it in a closed ecosystem where automakers operate independently. In the past, battery swapping was characterized by automakers working in isolation, with differing battery pack sizes, chassis interfaces, and communication protocols, creating isolated brand ecosystems. This fragmentation was the key reason battery swapping struggled to achieve economies of scale.

However, with the formation of industry consensus, the push from leading companies, and policy guidance, the standardization barriers for battery swapping are gradually being dismantled. The shift from isolated operations to alliance-based sharing has become a crucial turning point in the development of the battery swapping model.

The battery swapping standard innovation consortium led by CATL, in collaboration with major automakers such as SAIC, GAC, and FAW, released an interoperability standard for battery swapping systems. This standard, for the first time, unified mechanical connections, electrical interfaces, and communication protocols between standardized battery packs, swappable vehicles, and battery swap stations. The 'Chocolate' battery swap system has achieved 99% compatibility with pure electric platform models, making universal and large-scale battery swapping possible.

At the same time, automakers like Changan, Geely, and Chery have joined NIO's battery swap alliance. Policymakers have also released the 'General Technical Requirements for Electric Vehicle Battery Swap Facilities,' continuously reducing technical and policy barriers to cross-brand battery swapping. The battery swapping model is transitioning from brand-specific ecosystems to industry-wide sharing. The formation of economies of scale will further reduce the construction and operational costs of battery swap stations, continuously improving the cost-effectiveness of battery swapping.

Undoubtedly, the standardization of battery swapping, moving from brand-specific to industry-wide sharing, not only resolves compatibility issues but also gradually unleashes economies of scale. As more automakers and supply chain companies join the battery swapping standard innovation consortium, the construction and operational costs of battery swap stations will further decrease, while the service scope will expand from single-brand users to all users of compatible models. The cost-effectiveness and popularity of the battery swapping model will undergo a qualitative improvement.

Battery Swapping: More Than Just Speed—Scenarios and Assets as Defensive Moats

In public discussions, many attribute the core advantage of battery swapping simply to its speed, but this is a superficial interpretation of the model.

NIO's fourth-generation battery swap station, which completes a swap in 2 minutes and 24 seconds, represents only the surface-level advantage of battery swapping. Its true defensive moats lie in the vehicle-battery separation business model, irreplaceable scenario-based demand, and the breaking down of standardization barriers. CATL's release of the 'Technical Requirements for Interoperability of Bolt-on Battery Swap Systems for Pure Electric Passenger Vehicles' has propelled battery swapping from a proprietary ecosystem built and used by automakers to an industry-wide sharing era of 'one battery for all swaps, one station for all users,' accelerating the large-scale adoption of the battery swapping model.

The core value of the battery swapping model lies in addressing a persistent issue in the new energy industry—the differing lifespans of vehicles and batteries. Batteries are the most expensive component of an EV and are typical consumables, with a lifespan of 8-10 years, while the vehicle itself, as a durable good, can theoretically last for over a decade. If the vehicle and battery are strongly bound, an awkward situation arises where the vehicle is still operational, but the battery requires replacement at a cost of tens of thousands of yuan. Data shows that within the next 8 years, the power battery warranties of 41.6 million new energy vehicles will expire. If all these batteries were replaced, the total cost would reach 2.5 trillion yuan, an unbearable burden for both users and society.

The vehicle-battery separation model of battery swapping fundamentally resolves this issue. When purchasing a vehicle, users can opt not to buy the battery and instead lease it on a monthly basis. NIO's Firefly model has reduced the price of vehicle-battery separation to 79,800 yuan, bringing the purchase cost of EVs in line with or even lower than that of gasoline-powered vehicles.

More importantly, batteries are uniformly managed by battery swap stations, charged using dedicated slow-charging strategies, and monitored in real-time by hundreds of backend models, keeping battery degradation rates below 15%. NIO has even achieved a vehicle-battery lifespan synchronization, extending battery life to 12 years. Additionally, vehicle-battery separation allows users to benefit from battery technology upgrades. Existing vehicle owners can swap their batteries at stations for newer models with longer ranges, a experience of 'always-new batteries, always-usable vehicles' that flash charging cannot provide.

In the commercial sector, the advantages of battery swapping are also evident. For operational vehicles such as taxis, ride-hailing cars, and heavy-duty trucks, time directly translates into economic benefits. Even if charging takes only 9 minutes, adding the time to find a charging station and wait still makes it far less efficient than the immediate swap-and-go nature of battery swapping.

Data shows that battery swapping saves operational vehicles 40-50 minutes per charge compared to traditional charging. Assuming an hourly earnings rate of 30 yuan from orders, a single vehicle can earn an additional 20-25 yuan per day, amounting to nearly 10,000 yuan in extra earnings per year. This tangible economic benefit makes battery swapping a Rigid demand ( Rigid demand , jīng xìng xū qiú, rigid demand) in the commercial sector.

Of course, the asset-heavy nature of the battery swapping model remains a challenge for its development. According to statistics, NIO has invested over 18 billion yuan in the battery swapping sector, and the battery reserves and equipment maintenance of swap stations require continuous capital investment. However, with the standardization of battery swapping and the expansion of alliances, this asset-heavy pressure will be shared among automakers, battery companies, and operators. Moreover, the distributed energy storage value of battery swap stations opens up commercial possibilities beyond mere energy replenishment.

The Ultimate Answer for the Energy Replenishment Ecosystem: Diversity Over Singularity

The debate between flash charging and battery swapping has evolved into a zero-sum game largely because the public discourse compares the two on the same dimension, overlooking their fundamentally different technical foundations and market positioning.

When we step outside the narrow perspective of speed competition, it becomes clear that flash charging and battery swapping share a highly consistent underlying logic, with distinct market positioning. The coexistence and complementary nature of supercharging and battery swapping represent the ultimate solution for the new energy replenishment ecosystem.

From a technical standpoint, flash charging and battery swapping are not entirely separate technological paths but rather converge on the same goal—both are products of vehicle-storage-grid coordinated scheduling, with the core objective of pre-storing electrical energy through energy storage systems and rapidly delivering it to vehicles to avoid the impact of high-power replenishment on the grid.

In reality, automakers and industry giants have already demonstrated through their actions that betting on a single path is unwise, and multi-path layouts are the mainstream trend in the industry. While NIO remains committed to battery swapping, it has also built 28,000 proprietary supercharging stations and integrated 1.572 million third-party charging stations, creating an energy service system that supports charging, swapping, and upgrades. CATL, on the other hand, is developing its Shenxing and Qilin batteries for ultra-fast and flash charging while simultaneously promoting its Chocolate battery swap system to enter the battery swapping market and accelerating the commercialization of all-solid-state batteries. Even BYD, a proponent of flash charging, has never denied the validity of the battery swapping model. Li Yunfei, BYD's General Manager of Branding and Public Relations, stated, 'Battery swapping and flash charging represent a flourishing diversity and ultimately converge on the same goal.'

Policy guidance is also clear: the state consistently adheres to a parallel development strategy for charging and battery swapping. The 'Three-Year Doubling Action Plan for the Service Capacity of Electric Vehicle Charging Facilities,' released in 2025, lists the number of battery swap stations alongside charging facilities as key indicators of the national charging service network. The 2026 pilot program for addressing shortcomings in charging and battery swap facilities in county-level areas explicitly calls for exploring new technologies such as battery swapping and photovoltaic-storage-charging systems based on local conditions, with separate incentive weights for advanced charging and battery swapping technologies. Local governments are also simultaneously promoting the construction of charging and battery swap infrastructure, aiming to build a diversified, complementary, and efficient energy replenishment system through top-level design.

Ultimately, this competition over energy replenishment is not about technological superiority but about aligning business models with user needs. The emergence of flash charging is not intended to eliminate battery swapping but to spur the battery swapping model to accelerate standardization and move towards open sharing, transforming it from a brand-specific asset into an industry-wide resource. Conversely, the existence of battery swapping ensures that flash charging technologies do not overlook battery lifespan and safety issues, compelling them to continuously optimize their technologies. The mutual competition and promotion between the two ultimately benefit the entire new energy industry and consumers.

The rapid advancement of flash charging brings EV energy replenishment closer to the gasoline refueling experience, while the breakthroughs in battery swapping address core pain points in the new energy industry and rigid demands in commercial scenarios. When energy replenishment technologies move beyond zero-sum thinking and embrace diversified coexistence, the full electrification of new energy vehicles will truly accelerate.