CATL (SZSE: 300750) unveiled its third-generation Qilin “Shenxing” ultra-fast charging battery on April 21, 2026, at the company's annual Tech Day event — claiming the world's lowest internal resistance for any production ultra-fast charging battery and a headline charge time of under seven minutes from 10% to full.The new lithium iron phosphate cell's average internal resistance is 0.25 milliohms, which CATL says is 50% below the industry average and the decisive reason the pack can absorb current that would otherwise trigger thermal runaway in rival chemistries.CATL charging speed (CATL)Measured from a 10% state of charge, the Shenxing III recovers to 35% in one minute, reaches 80% in 3 minutes and 44 seconds, and hits 98% in 6 minutes and 27 seconds. At -30°C, the pack charges from 20% to 80% in just over nine minutes — enabled by a pulse rapid-heating system that brings each cell to operating temperature before current ramps up. The resistance reduction comes from two stacked material advances. On the cathode, CATL has refined its fully nano-crystallized LFP material using what it calls a super electronic network architecture, accelerating lithium-ion extraction during high-rate charging. The battery also retains more than 90% of its original capacity after 1,000 ultra-fast charge cycles.CATL charging cycles (CATL)The graphite anode incorporates a second-generation fast-ion ring coating that widens intercalation channels and shortens the path lithium ions must travel. Precise multi-point temperature sensing for each individual cell rounds out the system, allowing the pack to sustain a peak 15C charging rate — up from 12C in the 2025 second-generation Shenxing — without accumulating the internal heat stress that limits competing designs.The Shenxing III was part of CATL's most technology-intensive launch to date, appearing alongside the third-generation Qilin NMC battery targeting 280 Wh/kg and 1,000 km (621 miles) of range with 10C charging, the Freevoy II dual-power architecture, and the Naxtra sodium-ion battery scheduled for full-scale mass production by the end of 2026. CATL has not yet confirmed which specific vehicle models will debut with the Shenxing III. The second-generation Shenxing, announced in April 2025 with a 12C peak rate and more than 1.3 MW peak charging power, was committed to 67 models from brands including Zeekr, NIO, and Avatr. A dedicated OEM adoption announcement for the third generation is expected in the coming weeks.On infrastructure, CATL has been expanding its Shenxing Superfast Charging Network in partnership with Star Charge, YKC, and Shudao New Energy, targeting more than 600 service outlets across 271 prefecture-level cities in 31 provincial-level regions of China. CATL specifies that the Shenxing III's self-heating pulse system allows ultra-fast charging from any existing compatible pile — distinguishing it from systems that depend on proprietary high-voltage hardware.The third-generation Shenxing arrives roughly six weeks after BYD (HKG: 1211) announced its second-generation Blade Battery and Flash Charging system in March 2026. BYD's pack charges 10% to 70% in five minutes and 10% to 97% in nine minutes using FlashPass ion-transfer architecture and a peak 1.5 MW charging unit. By the same 10%–80% window, the Shenxing III is roughly a minute faster, though the two systems rely on different anode materials and infrastructure strategies. BYD has pledged 20,000 Flash Charging Stations globally by the end of 2026; CATL's network relies on third-party charging operators rather than company-owned hardware.Other global competitors remain at an earlier stage of ultra-fast LFP development. Tesla (NASDAQ: TSLA) builds its 4680 cylindrical cell in NMC chemistry, with a peak DC fast-charge rate of around 275 kW — an architecture optimised for energy density rather than charging speed.Samsung SDI and LG Energy Solution have advanced their 46-series cylindrical cells toward mass production for NMC applications, but neither has demonstrated LFP ultra-fast charging at CATL's scale or cadence. CATL held a 50.1% share of China's domestic EV battery market in Q1 2026 — its highest domestic figure in five years — and a 39.2% global share in 2025 according to SNE Research.Whether its technology lead in ultra-fast LFP can translate into locked-in OEM agreements before BYD's charging infrastructure reaches critical mass may ultimately determine how quickly the six-minute benchmark reshapes what drivers expect the next time they stop at a charger.
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