At its annual Tech Day event in Shanghai in April 2025, CATL, the world’s largest electric vehicle battery supplier, made a bold claim: its newest lithium iron phosphate cell can charge from 5% to 95% in roughly nine minutes. The product behind the number is the Shenxing Plus, an upgraded version of the Shenxing LFP pack that already ships in production vehicles like the Zeekr 007 and several Changan models. If the figure holds outside a stage demo, it would cut the fastest mainstream EV charging times by more than half and bring the refueling experience within striking distance of a gasoline pump.
Days earlier, rival BYD fired its own shot. The Shenzhen-based automaker and battery giant unveiled a second-generation Blade battery system paired with chargers it says can replenish a pack nearly as fast as filling a fuel tank. BYD quoted charge times as short as four minutes for certain configurations and announced plans to roll out a proprietary network of ultra-high-power stations to support the technology. Together, the back-to-back announcements mark the most aggressive public claims yet in a race that could reshape how quickly the world moves away from internal combustion engines.
The technical claims, unpacked
CATL’s Shenxing Plus uses lithium iron phosphate chemistry, the same low-cost, thermally stable family that has made Chinese-made EV batteries price-competitive worldwide. The company says the new cell architecture supports charging rates exceeding 1,000 kilowatts and delivers a driving range of roughly 700 kilometers on the Chinese CLTC test cycle. During the Shanghai event, CATL also asserted that its pack offers longer range than BYD’s latest system, though it did not publish a side-by-side methodology or identify which BYD product it was comparing against.
BYD’s second-generation Blade battery targets a similar power envelope. The company’s stated four-minute figure appears to apply to partial charges or smaller pack sizes rather than a full 5%-to-95% fill, but BYD has not released granular data clarifying the exact state-of-charge window. What BYD did make concrete is its infrastructure commitment: the company outlined a buildout of dedicated chargers designed to deliver the power levels these cells demand, an acknowledgment that hardware alone is not enough without a matching network.
For context, most public DC fast chargers operating today top out between 50 and 350 kilowatts. Charging a large EV battery in under 10 minutes requires sustained power delivery above 500 kW per vehicle, and potentially above 1,000 kW. That gap between what exists on the ground and what these batteries need is not trivial. It involves heavier cabling, liquid-cooled connectors, upgraded transformers, and in many locations, entirely new grid connections.
What neither company has proven yet
Neither CATL nor BYD has released independent, third-party test results to support its headline numbers. CATL’s figures come from its own corporate stage. BYD’s come from its own launch event. No government certification body, peer-reviewed study, or independent testing lab has publicly confirmed either claim as of May 2026.
That matters because battery performance in controlled demonstrations routinely diverges from real-world results. Ambient temperature, battery age, cable resistance, grid voltage stability, and onboard thermal management all affect how quickly a cell can safely absorb energy. A nine-minute charge achieved under ideal conditions on a warm Shanghai afternoon could stretch to 15 or 20 minutes on a cold highway rest stop after the pack has cycled through several hundred charges. Without standardized, independently administered tests, the size of that gap is anyone’s guess.
Durability is another open file. Pushing very high currents into a lithium cell repeatedly accelerates degradation if thermal management is not precisely calibrated. Both CATL and BYD have deep experience with LFP chemistry, which is inherently more tolerant of fast charging than nickel-rich alternatives, but neither company has published long-term cycle-life data for these specific new cells. Regulators in Europe, the United States, and China will almost certainly require detailed safety and longevity documentation before approving widespread deployment.
Then there is cost. Ultra-fast charging demands advanced electrode designs, specialized cooling systems, and high-capacity charging stations. None of that comes free. Neither company has disclosed pricing for the new battery packs or the chargers needed to unlock their top speeds. Whether the technology will debut in premium models and trickle down over several years, or arrive at mass-market price points quickly, remains unclear.
Why Western competitors are watching closely
CATL and BYD together account for more than half of global EV battery shipments. When either company sets a new performance benchmark, it reverberates through supply chains in Europe, Japan, South Korea, and the United States. Automakers negotiating battery contracts now have a new reference point: if a Chinese supplier says nine minutes is possible, every competing bid will be measured against that number.
Western battery startups like StoreDot have promised similar ultra-fast charging timelines, and Toyota has staked its next-generation EV strategy on solid-state cells that it says will charge in under 10 minutes. But none of these alternatives are shipping in production vehicles today. CATL’s advantage is that its first-generation Shenxing packs are already on the road, giving the Shenxing Plus claim a foundation of commercial credibility that pure-research announcements lack.
BYD’s approach adds another competitive layer. By pairing its battery with a proprietary charging network, BYD is borrowing a page from Tesla’s Supercharger playbook: controlling both the energy storage and the delivery infrastructure. That vertical integration could give BYD an edge in markets where public charging networks are fragmented or underpowered, particularly in Southeast Asia, Latin America, and parts of Europe where the company is expanding aggressively.
What EV buyers should actually expect
For anyone considering an electric vehicle purchase in the next year or two, the practical takeaway is cautious optimism. Two of the world’s most important battery manufacturers are publicly staking their reputations on single-digit-minute charging. That signals genuine progress in cell chemistry and thermal engineering, not just marketing ambition.
But a stage demo is not a consumer guarantee. Even if a cell can technically accept ultra-fast charging, automakers may limit peak power through software to protect pack longevity or reduce warranty exposure. Charging speeds in production vehicles are often governed by the car’s battery management system, not just the cell’s raw capability. Early adopters may find the fastest speeds restricted to specific trims, software tiers, or compatible charger networks.
The most telling indicators over the coming months will be concrete ones: which automakers sign supply deals for these new packs, how quickly compatible charging stations appear outside China, and what independent road tests by automotive journalists and certification agencies reveal about real-world performance. Until those data points arrive, CATL’s and BYD’s announcements are best understood as ambitious engineering milestones, not finished products sitting on a dealer lot.
If even a portion of the claimed performance survives contact with everyday driving conditions, the effect on adoption could be significant. Shorter charging stops would make long-distance EV travel genuinely comparable to gasoline road trips, chipping away at the single biggest behavioral objection that keeps many drivers from switching. The technology is moving fast. The proof, for now, is still catching up.
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*This article was researched with the help of AI, with human editors creating the final content.
