Schnellladung und Batteriewechsel: Der versteckte Wettlauf um die Energieversorgung von Elektromobilen

The dispute over the energy recovery methods for electric vehicles has started again.

In March 2026, BYD officially presented the second - generation Blade battery and megawatt fast - charging technology, which has brought the energy recovery rate of electric vehicles to an unprecedented level. This technology enables an extreme energy recovery speed of 70% in 5 minutes and 97% in 9 minutes. Even under extreme cold conditions of minus 30 °C, charging only takes 3 minutes longer than at normal temperature. “Charging as fast as refueling” is gradually becoming a tangible reality.

Subsequently, Li Bin, the founder, chairman, and CEO of NIO, explained during an appearance on the CCTV Finance Channel's TV program “Dialog - Innovation China Tour”: “Even the fastest super - fast - charging technology cannot be as fast as the battery - swapping system.” Moreover, he held a controversial view: Frequent use of super - fast - charging technology could have a negative impact on the battery's lifespan and safety. “From the perspective of battery health, one should, if possible, charge slowly rather than quickly.”

After Li Bin's remarks, a fierce debate over the energy recovery methods for electric vehicles broke out again. In response to this debate, Li Yunfei, the general manager of BYD's Brand and Public Relations Department, replied via Weibo: “Although the battery - swapping system and fast - charging technology are two different models, both are good. They are like different flowers, all in bloom, and they ultimately lead to the same goal.”

Since Tesla built the first super - charging station in China in 2014, the network of battery - swapping stations has continuously expanded in the past ten years, and the charging efficiency of fast - charging technology has continuously set new records. However, the anxiety of electric vehicle users about energy recovery cannot be completely eliminated. Will the megawatt fast - charging technology, which shortens the charging time to just a few minutes, completely replace the battery - swapping system? Which of the two energy recovery methods, charging or battery swapping, will determine the future?

01 Progress and Challenges of Megawatt Fast - Charging Technology

The second - generation BYD Blade battery and megawatt fast - charging technology have shaken the industry, mainly because they have made progress simultaneously in three important areas - charging speed, energy density, and safety. They have not only solved the problem that it was previously impossible to achieve both fast charging and high energy density but also overcome the globally well - known challenge of charging at low temperatures.

Charging speed is the most important factor for electric vehicle users. In the past, it took hours to fully charge a pure electric vehicle at a conventional slow - charging station. Even with the common fast - charging technology, it usually took about 30 minutes. With the second - generation Blade battery combined with megawatt fast - charging technology, one can charge enough energy in 5 minutes to drive 400 kilometers. This actually makes it possible to “charge as fast as refuel”. This leap in charging speed has significantly improved the practicality and convenience of electric vehicles.

In addition, the second - generation Blade battery is equipped with an “Intelligent Thermal Management System for All Temperature Ranges”, which functions stably even under extreme conditions between minus 30 °C and plus 60 °C. At minus 30 °C, it only takes 12 minutes to charge the battery from 20% to 97%. Thus, the problem of charging at low temperatures is finally solved.

Most importantly, the second - generation Blade battery and megawatt fast - charging technology are not laboratory products but already mature solutions that can go into mass production immediately. Wang Chuanfu, the chairman and president of BYD, has made it clear that BYD will comprehensively promote the fast - charging technology. In 2026, the fast - charging technology will also be applied to vehicles in the price range of 150,000 yuan, so that users can have the same energy recovery experience regardless of the vehicle price range. At the same time, the 1,000 - V high - voltage platform will be used in several new vehicles.

To promote the implementation of megawatt fast - charging technology, BYD has launched the “Fast - Charging in China” strategy. It plans to build 20,000 fast - charging stations across China by the end of 2026, including 18,000 “stations within stations” in urban areas and 2,000 “highway fast - charging stations”. BYD has also promised that the first 1,000 “highway fast - charging stations” will be put into operation before the May Day holidays this year.

Although BYD's megawatt fast - charging technology has a strong market position, there are still many real challenges in mass implementation.

First of all, the mass construction of charging stations requires huge capital investment, and implementation is difficult. It is known that the total investment for a standard highway fast - charging station with 8 charging spots is about 4.3 million yuan, and the investment payback period is about 3.5 years. Such a capital investment requires a very high capital reserve. Even for a leading automobile company like BYD, building 20,000 fast - charging stations would require a capital amount in the billions. In addition, the stable operation of fast - charging stations depends on the load - bearing capacity of the associated power grid. In some areas with weak power grid infrastructures, the power grids still need to be upgraded, which further increases the construction costs and the difficulty of implementation.

Secondly, the application scope of megawatt fast - charging technology is limited and cannot cover all vehicle models. Megawatt fast - charging technology has very high requirements for vehicle hardware. The vehicle must carry a 1,000 - V high - voltage platform, a traction battery with a maximum charging rate of 10C, and a silicon carbide automotive chip with 1,500 V. This means that currently only BYD's new flagship models can benefit from this technology, while older vehicle models are excluded. The limitations in technical adaptation not only directly limit the application scope of megawatt fast - charging technology but are also an important factor that hinders the mass implementation of this technology.

02 The Barriers of the Battery - Swapping System Have Not Been Broken

While BYD's megawatt fast - charging technology is on the rise, NIO and CATL are continuously improving and upgrading their battery - swapping systems.

NIO plans to build 1,000 new battery - swapping stations in 2026, 99% of which are the latest fifth - generation battery - swapping stations. By the end of 2026, the total number of battery - swapping stations across China will rise to over 4,600. At the same time, NIO will further improve the network of high - speed battery - swapping stations along the “nine north - south routes, nine east - west routes, and nineteen major urban agglomerations”. CATL has also released the construction plan for the battery - swapping network in 2026. It has made it clear that it will accelerate the construction of battery - swapping stations and strive to build more than 2,500 “chocolate battery - swapping stations” in 120 cities across China.

The reason why both NIO and CATL continuously invest in the battery - swapping business is that the battery - swapping system still has irreplaceable advantages.

The concept of “separating the vehicle from the battery” in the battery - swapping system fundamentally solves the problem of the different lifespans of the vehicle and the battery in electric vehicles. This is the core advantage of the system. On the one hand, separating the vehicle from the battery through battery leasing can significantly reduce the purchase cost of electric vehicles, making the cost comparable to or even lower than that of fuel - powered vehicles. On the other hand, the battery - swapping system enables the unified management of traction batteries. This can control the aging of the batteries and extend their lifespan. In addition, users of older electric vehicles can benefit from the technological progress in battery technology.

The energy recovery speed is another important advantage of the battery - swapping system. The fourth - generation NIO battery - swapping stations have shortened the swapping time to 2 minutes and 24 seconds, and the swapping time of CATL's chocolate battery - swapping stations is also less than 3 minutes. This energy recovery speed is significantly faster than BYD's megawatt fast - charging technology, which takes 9 minutes to fully charge the battery. The energy recovery experience is almost as convenient as refueling a fuel - powered vehicle. In addition, the battery - swapping system is the best solution for daily energy recovery for electric vehicle users who do not have a fixed parking space and cannot install a private charging station.

It is also worth mentioning that the battery - swapping system has excellent adaptability to different scenarios. For example, the charging efficiency of conventional charging stations drops significantly in the cold winter months in northern China, while the battery - swapping system can effectively avoid the problem of slow charging and reduced charging efficiency at low temperatures and can provide stable energy recovery services for electric vehicle users.

However, there are still two major obstacles on the development path of the battery - swapping system, which is also the reason why the battery - swapping system is constantly being questioned.

First of all, the battery - swapping system has long had to deal with the problem of “standard fragmentation”. Since traction batteries are highly customized products and the R & D directions and standards of battery manufacturers are different, the manufactured traction batteries cannot be unified in terms of energy density, battery structure, size specifications, etc. As a result, the traction batteries of different brands cannot be interchangeable, which means that battery - swapping stations can only work for vehicles of a single brand, and it is difficult to serve vehicles of other brands.

Secondly, the construction and operation costs of the battery - swapping system are also a major problem. Building a battery - swapping station requires huge capital investment, including equipment procurement, installation, and setup, etc. For example, the construction cost of a single fourth - generation NIO battery - swapping station is about 2 to 3 million yuan, which is many times the cost of a single conventional super - charging station. At the same time, the operation costs of battery - swapping stations are also very high. In addition to the high rent for the location, the ongoing maintenance costs and the depreciation of traction batteries also need to be borne.

It can be seen that although the battery - swapping system has unique advantages, the road ahead will not be smooth.

03 Complementary Co - existence Is Already an Industry Consensus

The so - called dispute over the energy recovery methods for electric vehicles is essentially a false dilemma in view of the actual market needs. The final form of the energy recovery system is not the monopolization of a single method but the cooperation and complementarity based on different scenarios and needs. The co - existence and common prosperity of the charging model and the battery - swapping model are already a general industry consensus.

Li Bin made it clear in the program “Dialog - Innovation China Tour” that the battery - swapping system and super - fast - charging technology are not in a contradictory relationship but are solutions for different energy recovery scenarios. The two do not contradict each other. Li Bin gave an example: “A person can do well in both math and Chinese.” Earlier, Shen Fei, the senior vice - president of NIO and the president of LeDao Automobile, also explained that super - fast - charging technology and the battery - swapping system are not in a “life - and - death competition” but are solutions for different aspects.

In fact, both BYD, NIO, and CATL prove with their actions that it is not wise to focus on a single energy recovery method. A diversified strategy is more in line with the industry development trend.

BYD was previously skeptical about the battery - swapping system but has rebuilt the battery - swapping business field for commercial vehicles in recent years. However, its focus is on the level of traction battery products, not on the construction and operation of battery - swapping stations. Although NIO strongly focuses on the battery - swapping system, it already has 28,000 own super - charging stations and has connected to 1.572 million external charging stations. CATL, on the one hand, promotes super - fast - charging technology through the Shenxing battery and, on the other hand, builds the battery - swapping business through the chocolate battery - swapping stations and the Qiji battery - swapping stations.

At the national level, the policy of “promoting the coordinated development of different energy recovery methods” is also maintained. In September 2025, the National Development and Reform Commission and other ministries released the “Action Plan to Double the Performance of Electric Vehicle Charging Infrastructure in Three Years (2025 - 2027)”, in which the number of battery - swapping stations and the charging infrastructure are listed as equivalent indicators for the performance of the national charging service network. In March 2026, the Ministry of Finance and the Ministry of Industry and Information Technology released the “Notice on the Implementation of the Pre - registration for the Pilot Projects to Supplement the Charging and Battery - Swapping Infrastructure in Rural Areas in 2026”, which explicitly requires that the pilot areas should actively explore the application of new technologies and new models such as battery - swapping, photovoltaic - storage - charging, all - liquid - cooling, and V2G according to local conditions, and set incentive weights for advanced charging and battery - swapping technologies respectively.

The intellectual duel between Li Bin and Li Yunfei is essentially not a dispute over the energy recovery methods for electric vehicles but a market game between the two companies based on their resources, business models, and strategic positioning.

Different user groups and different trips correspond to different energy recovery methods. Complementarity and cooperative co - existence