The largest lithium-ion battery maker on earth showed up in Munich with a grid storage system containing no lithium. Two Bit da Vinci walks through what CATL unveiled and why the company would bet against its own core product. The video reports the sodium-ion grid system holds more than 30 megawatt hours per container-sized unit, is rated for 15,000 charge cycles, which CATL puts at roughly 25 to 30 years of service, and retains over 90 percent of capacity at minus 20 Celsius. The video says first units went to China in September, with the rest of the world following next year. Shortly before the reveal, according to the video, CATL signed a deal to supply 60 gigawatt hours of sodium cells to a single customer, described as the largest sodium-ion agreement anyone has signed.
The honest tension sits in the video's own title. It promises 80 percent cheaper, and then the segment on pricing concedes that sodium is currently running neck and neck with lithium iron phosphate, because the lithium price crash dragged LFP down with it. Both things can be true, but they are not true at the same time, and a reader deciding whether this changes anything should hold the second one. The case for sodium is not that it is cheap today. It is that it cannot become expensive the way lithium did. Anyone who has watched a commodity spike knows the difference between a low price and a stable one, and the buyers who care most about that distinction are utilities signing 20-year contracts, not anybody shopping for a car.
On the chemistry, the video says the cathode is a layered oxide with no cobalt and no nickel, and the anode is hard carbon rather than graphite, which sidesteps a material that China largely controls. Sodium is described as the sixth most abundant element in the crust and more than a thousand times more common than lithium. The supply concentration figures cited are pointed: roughly three quarters of mined lithium from three countries, about 65 percent of refining in China, and around 76 percent of cobalt from the Democratic Republic of Congo. CATL's car-focused sodium cells are quoted at about 175 watt hours per kilogram, over 10,000 cycles and 80 percent charge in 15 minutes. The video notes these are CATL's own lab numbers and wants independent testing.
The history explains why this took so long. Sodium was the early favourite, and the video points to a Ford battery from 1966 that ran on it, with one catch: it needed roughly 300 Celsius to keep the sodium molten. When a chemist showed lithium ions moving in and out of a material at room temperature in the early 1970s, the video says, the industry pivoted, and Sony had a commercial lithium cell in a camcorder by 1991. Sodium's problem was the anode. Its ions are about a third larger than lithium's and will not slide neatly into graphite. A Canadian research group swapped in hard carbon in 2000, and the video says CATL then spent close to a decade and around $1.5 billion turning that into something manufacturable, including solving hard carbon's habit of pulling water out of the air, so the cells run down existing lithium production lines.
Bottom line: Sodium is not coming for your car, and treating this as an EV story misses it. Weight still decides what goes in a vehicle, and lithium still wins that fight. What sodium is coming for is LFP in the steel box in a field, where nobody has ever carried the battery and nobody cares what it weighs. That is the boring half of the energy transition and also the half that decides whether solar ever replaces gas. Watch the 60 gigawatt hour contract, not the spec sheet. Somebody signed for it before the price advantage even showed up.
Commentary on a third-party video. Figures and claims are as presented in the source and have not been independently verified. Spotted an error? Tell us and we will correct it.