Shifting consumer demands are intensifying the "specification war" in the battery industry. Two years ago, 5C ultra-fast charging was an exclusive advantage for high-end models from only a few automakers. Today, models featuring 5C and 6C charging capabilities are appearing in droves.
By March 2026, the leading battery manufacturers had collectively pushed charging parameters into the minute-level range. Wang Chuanfu, Chairman of BYD, declared this round of competition concluded, stating that the first half of vehicle electrification has ended perfectly. His implication was that battery technology competition has hit a ceiling, and the industry has now entered the second half, focused primarily on intelligence.
However, not everyone agrees that the final whistle has blown. On the evening of April 21, 2026, at its Tech Day event, CATL unveiled five new batteries covering all major chemical systems and a comprehensive energy replenishment network solution, with ultra-fast charging being just one of many products. Gao Huan, CTO of CATL, emphasized that energy density remains the primary standard for measuring battery technology, while charging speed is merely one performance aspect.
The arms race in energy replenishment over recent years has achieved one objective: gradually alleviating consumer range anxiety towards electric vehicles and convincing them that EVs can offer a refueling experience comparable to gasoline-powered cars.
But it has failed to answer the next question. When all batteries can be charged within minutes, how can their reliability and the energy replenishment experience be guaranteed? Over the past two-plus years, automakers and battery manufacturers have been continuously playing catch-up. From technical pathways to energy infrastructure, the dimensions of competition are shifting.
The intense focus on charging speed within the battery industry is primarily driven by changes in consumer demand.
A McKinsey report, "2025 China Auto Consumer Insights" released in April 2025, found that some pure electric vehicle owners were already considering switching back to gasoline cars, with the core reason being a poor energy replenishment experience. Subsequent consumer insight reports from institutions like Autohome indicated that after market penetration surpassed 50%, consumer decision-making logic shifted from "cost-performance" to "quality-performance," focusing less on mere specifications and more on the actual user experience.
Charging speed is just one dimension of the user scenario. Yet, for the past two years, the industry's response to energy replenishment challenges has been almost entirely concentrated on this single dimension.
Automakers have made charging speed a core selling point. The 800V high-voltage platform has trickled down from high-end models, and 4C-5C ultra-fast charging has become standard in the 150,000-200,000 yuan price segment. Charging speed has transitioned from an exclusive flagship feature to a basic configuration.
BYD pushed this competition to its peak in March 2026. Its second-generation Blade Battery, using lithium iron phosphate (LFP), achieved 70% charge in 5 minutes and a full charge in 9 minutes, with only a 3-minute increase at -30 degrees Celsius. Simultaneously, BYD announced plans to build 20,000 flash-charging stations by the end of the year, bringing flash-charging to models in the 150,000-yuan category. This move integrated battery technology, infrastructure, and operations in one sweep, giving Wang Chuanfu the confidence to declare the half over.
In communications over the past month, executives from various automakers have frequently inquired about the user experience of BYD's flash-charging and its potential direct impact on consumer purchasing decisions.
CATL is no exception. Sources close to CATL indicated that following BYD's new battery launch, discussions with other automakers regarding ultra-fast charging battery cooperation have significantly increased, objectively accelerating the adoption of ultra-fast charging technology.
The debate over energy replenishment routes has also reignited at this juncture. Shortly after BYD's announcement, Li Bin, Chairman of NIO, stated that "no matter how fast ultra-fast charging is, it cannot be faster than battery swap," questioning the potential battery degradation from frequent high-power charging. Li Yunfei, BYD's General Manager of Brand and Public Relations, later commented on both swap and flash-charging, saying, "Both are good; different paths lead to the same goal."
CATL's release of the third-generation Shenxing battery on April 21st served a dual purpose: addressing market doubts about CATL's progress in ultra-fast charging technology and introducing new technology to attract more automaker partners. With a parameter of reaching 98% charge in 6 minutes and 27 seconds, it is faster. But behind this spec, CATL emphasizes another metric: a capacity retention rate above 90% after 1,000 ultra-fast charging cycles.
Gao Huan explained that the core challenge of fast charging is not the trickle charge phase but temperature rise. For every 10-degree Celsius increase in battery temperature, the rate of internal side reactions approximately doubles. If temperature rise is not controlled, faster charging leads to shorter battery lifespan.
CATL adheres to the 300mm-class short cell format, a path determined as early as 2015. Gao Huan stated that compared to 400mm-class cells, the 300mm-class directly reduces heat generation by over 20%. CATL has achieved an average internal resistance of 0.25 milliohms for its LFP cells, only 50% of that found in other industry ultra-fast charging batteries. This achievement stems not from thinning the electrodes but from a full-chain reduction in internal resistance, involving the morphology of cathode and anode particles, SEI film construction, and electrolyte formulation.
This is the differentiated angle CATL has chosen in the charging speed race: not just competing on who is faster, but ensuring that speed comes with minimal impact on service life.
Regarding the timeline for the third-generation Shenxing ultra-fast charging battery's installation in vehicles, Gao Huan stated that the delivery schedule depends on automakers' progress. Current confirmed information points to the fourth quarter of this year. He also believes that existing 5C and similar specification batteries will soon be普及到 models in the 60,000-100,000 yuan price band.
This signifies that ultra-fast charging is transitioning from an exclusive high-end feature to a普及阶段 stage.
The democratization of ultra-fast charging technology is forcing automakers to find new anchors for their specification competitions.
In the first half of 2026, mass production timelines for solid-state batteries converged rapidly. Hongqi unveiled a 380Wh/kg solid-state battery planned for small-scale installation in 2027. GAC's pilot line for all-solid-state batteries commenced operation, with plans for installation in Hyper models. Geely's self-developed battery packs rolled off the line, entering vehicle validation. Chery planned targeted operations for 2026 and mass market availability for 2027. Changan, SAIC, and BYD also announced their respective milestones.
Automakers are in a hurry because solid-state batteries represent an opportunity to reshuffle the deck. Over the past decade, automakers have been highly dependent on battery manufacturers in the three-electric domain, with CATL alone holding over 50% of the domestic market share. If automakers can establish self-research capabilities in solid-state technology, they could potentially reduce their reliance on external suppliers. Hongqi, GAC, and Geely are all pursuing self-developed solid-state battery routes.
Furthermore, as charging speed, intelligent driving, and cabin features become increasingly homogenized, "equipped with solid-state battery" could become the next tangible technological differentiator for consumers.
But those who make batteries understand best how challenging solid-state technology is.
Zeng Yuqun, Chairman of CATL, stated at the World Power Battery Conference in November last year that all-solid-state battery technology is not yet mature, with mass production unlikely before 2030. Gao Huan also mentioned on April 22nd that solid-state batteries are currently in the phase of scaling from 1 to 9, with pilot lines and sample progress proceeding smoothly. BYD similarly points to small-scale production around 2027 and mass production around 2030.
The most cautious players are the battery makers; the most aggressive are the battery users.
The essence of this divergence is a struggle for influence. Automakers aim to regain dominance through next-generation battery technology, while the leading battery manufacturer seeks to maintain indispensability by covering multiple chemical systems.
CATL has chosen not to compete directly on the solid-state timeline. Instead, it introduced condensed matter battery technology, with cell energy density reaching 350Wh/kg, enabling a range of 1500 km for sedans and over 1000 km for SUVs. This technology was previously validated in the aerospace sector, with the core bottleneck for automotive application being cost reduction.
Gao Huan revealed during an exchange on April 22nd that several premium Chinese automakers are very interested in condensed matter technology and are actively engaging.
Condensed matter is not a substitute for solid-state, but it addresses similar challenges. The difference lies in the fact that solid-state is still awaiting mass production, while condensed matter is already vehicle-ready.
Gao Huan illustrated with a specific scenario: a large 5.2-meter six-seater SUV, with high body height, significant drag, and high energy consumption. Using LFP chemistry to achieve a 1000 km range would require a battery pack weighing nearly 1 ton. On the other end, sodium-ion batteries are set for mass production by year-end, targeting the economy market with ranges suitable for extended-range (300km EV) and pure electric (500km) applications. From condensed matter to Kirin, Shenxing, Xiaoyao, and sodium-ion, CATL is deploying five different chemical systems simultaneously. No other company in the industry matches this breadth of coverage.
Wu Kai, Chief Scientist of CATL, stated during the presentation, "No single material can achieve perfection." This comment serves to temper the narrative of solid-state batteries as the "ultimate solution." Regardless of whether automakers bet on solid-state or CATL focuses on a multi-system portfolio, the ultimate test will be delivering a superior user experience through the supporting infrastructure.
Beyond the battery itself, competition is heating up around the network.
The number of charging piles has exceeded ten million, yet consumer dissatisfaction persists. Holiday queues on highways are commonplace; in cities, low utilization coexists with peak-hour queues; rural areas suffer from severe under-coverage. The problem is not a lack of piles, but their uneven distribution and the uncertainty of the experience.
Yang Jun, General Manager of CATL's battery swap business, used a key word during an exchange: certainty. He said "fast" is important, but "certainty" is more important. Can the user replenish energy immediately upon arriving at a station? That is what users truly care about.
The models employed by major players in the energy replenishment sector differ significantly. BYD aims to build 20,000 flash-charging stations by the end of 2026. NIO, with its 4,600 swap stations, pursues service differentiation through battery-as-a-service, battery leasing, and full lifecycle management, fostering strong user loyalty but incurring high per-station costs.
CATL's latest solution is the introduction of integrated ultra-charging and swap stations. Instead of choosing sides between charging and swapping, it combines both scenarios at a single site. Yang Jun presented calculations: by sharing the transformer and charging modules, the comprehensive power loss rate is reduced by over 13 percentage points compared to charging stations with integrated storage. For every 100 kWh drawn from the grid, an additional 13 kWh reaches the vehicle. Equipment reuse rate exceeds 85%, service capacity per parking space is triple that of a charging station with storage, and the fixed-asset investment cost for ultra-charging is only one-fifth of the storage-integrated solution.
The target is clear. BYD's flash-charging stations, announced just a month and a half prior, are centered on integrated photovoltaic, storage, and charging.
However, the true differentiation of the integrated ultra-charge/swap station lies not in technical parameters but in the business model. CATL is pursuing an open platform, planning to build 4,000 integrated stations by the end of 2026. The initial partners include six automakers: Changan, Chery, GAC, Seres, Wuling, and BAIC. The plan is to build over 100,000 shared energy replenishment facilities by 2028.
Yang Jun also revealed a detail: starting in the second half of this year, users of the modular "Chocolate" battery swap service will be able to exchange a fully charged battery pack back to the station during peak electricity price hours. The station will pay the price difference to the vehicle owner, potentially generating daily earnings of several tens of yuan. This transforms the battery from a consumable product into a mobile energy asset.
Policy support is also accelerating. State Grid plans to invest no less than 40 billion yuan in power infrastructure this year. Pilot programs by the Ministry of Finance and the Ministry of Industry and Information Technology aimed at addressing充换电短板 in county areas explicitly require exploring new models like battery swap and integrated PV-storage-charging. The signal from the national level is not to choose sides but to encourage the coexistence of multiple models.
From an industry perspective, the competition in energy replenishment networks ultimately points to a deeper question: whose standard will become the industry standard? A national standard for battery swapping is a key variable that everyone is awaiting.
The charging arms race of the past two-plus years solved one problem but exposed a larger one. As specifications converge, competition in the battery industry will no longer be about a single battery cell, but about an entire system. From the cell to chemical systems, to the energy replenishment network, and industry standards, whoever can integrate this entire chain will secure a ticket to the next round.
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