CATL has fired another shot in the battery wars. At its Tech Day event, the company unveiled the third-generation Shenxing lithium iron phosphate (LFP) pack, a traction battery that CATL says can charge to nearly full in six minutes, while also claiming the lowest internal resistance in the world for ultra-fast charging.
The headline number is hard to ignore: CATL says the pack reaches 10% to 80% in 3 minutes 44 seconds, and 10% to 98% in 6 minutes 27 seconds. In a colder -30 °C scenario, it still gets from 10% to 98% in 9 minutes. That is the kind of specification that forces rivals to sharpen their presentations, especially in China, where battery makers are now competing almost as aggressively on charging speed as on range.
What CATL says the Shenxing battery can do
CATL says the new pack reaches the market with an internal resistance of just 0.25 milliohms, which it describes as 50% below the industry average for ultra-fast charging. It also uses three technical tricks: shoulder-cell cooling that improves cooling efficiency by another 20%, multi-point temperature sensing for each cell, and pulse self-heating to tame low-temperature charging.
The company also claims durability is not being sacrificed for speed. After 1,000 cycles of ultra-fast charging, CATL says the battery still retains a state of health above 90%. That is the real test here; quick charging sounds impressive until the pack ages like milk.
A cold-weather workaround without special chargers
One of the smarter parts of the pitch is that CATL says its pulse self-heating system works without special charging infrastructure. In plain English: the battery is supposed to handle winter better without forcing drivers, operators, or charging networks to buy a new pile of hardware just to make the chemistry behave.
CATL also paired the battery with an integrated fast-charge and swap solution, giving users two options at once: plug in for a rapid top-up or swap the pack entirely. That flexibility matters most in harsher conditions, where even a fast charger can lose its swagger at -30 °C.
Why BYD and the rest are under pressure
CATL is not unveiling this in a vacuum. The company says its new battery beats the recently announced BYD Blade Battery 2.0 on charging times, and the timing makes sense: BYD has been pushing hard on its own battery stack, while other Chinese suppliers are chasing EV makers that want shorter stops and fewer compromises. According to analysts cited in the source, CATL held 48.3% of the power-battery market in 2025, rising above 50% in the first quarter of 2026, while BYD sat at 17% and CALB at 5.9%.
That dominance gives CATL room to set the pace, but it also raises the bar for everyone else. If ultra-fast charging is moving from marketing slide to actual product spec, the next battle is not just about who can promise the quickest refill. It is about who can do it repeatedly, in the cold, without wrecking the pack.