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Tesla China supplier CATL launches cost-effective sodium-ion battery cell

Credit: Tesla/YouTube

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Tesla China battery cell supplier Contemporary Amperex Technology Co. Ltd. (CATL) unveiled its sodium-ion battery earlier today, along with a solution that could integrate the cells with lithium-ion batteries in a single pack. The sodium-ion cells are a more cost-effective option than the lithium-ion batteries, opening the door for lower prices in the EV battleground market of China.

The introduction of sodium-ion cells is an alternative option to the lithium-ion cells Tesla has used in its vehicles. CATL Chairman Zeng Yuqun highlighted the favorable characteristics of utilizing sodium-ion cells during the company’s online launch event earlier today.

“Sodium-ion batteries have unique advantages in low-temperature performance, fast charging, and environmental adaptability,” Zeng said. “Moreover, they’re compatible and complementary with lithium-ion batteries. Diversified technical routes are an important guarantee for the long-term development of the industry.”

Tesla battery partner CATL extends supply deal to 2025

CATL said it will set up a supply chain for the new cells in 2023. The cells do not contain lithium, cobalt, or nickel, but the battery manufacturer did not disclose any cost details of the new cell.

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Tesla has long been working with suppliers for battery cells and has partnerships with Panasonic, LG Chem, and CATL to supply its electric vehicles with batteries. While working with third-party suppliers, the company has also researched on its own with the help of a battery team at Dalhousie University with legendary cell scientist Jeff Dahn. Tesla is not opposed to exploring battery cell chemistries favorable for electric vehicles, especially if the new cells can create more range, power, or a longer life cycle.

CATL has worked with Tesla since Gigafactory Shanghai started producing vehicles in late 2019. Tesla started customer deliveries in early 2020 at the Chinese plant and has relied on CATL’s world-class battery manufacturing to keep up with growing demand in China. CATL sold 34.1 GWh in the first half of 2021, up 234% year-over-year, according to Automotive News ChinaThe company has a 30 percent market share, but the company has been struggling with the rising cost of lithium carbonate, which has doubled this year. Additionally, nickel has also increased in price this year.

Due to increased demand, lithium prices are expected to trend higher this year and into next year, especially as more automakers extend into the electric automotive sector. These forecasts have launched battery makers like CATL into a widespread effort to experiment and develop other cell chemistries that would be favorable for their clients, and sodium-ion batteries are a great alternative.

Despite the sodium-ion cell’s reputation for somewhat lower energy density, CATL said that its Research and Development team had reached an energy density of 160 watt-hours per kilogram, and it should exceed 200 Wh/kg in the coming years as more experimentation continues. For comparison, lithium-ion cells can reach about 285 Wh/kg, according to K. M. Abraham, a research professor at Northeastern University. Interestingly, the solution CATL also unveiled at the event is also expected to compensate for the reduced energy density of the sodium-ion cell, while preserving the advantage the cell makeup has to offer.

News of the new cell shot Tesla stock up over 4.6% in early trading hours on Thursday. At the time of writing, TSLA stock traded at $677.07, up $30.23.

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Disclosure: Joey Klender is a TSLA Shareholder.

Joey has been a journalist covering electric mobility at TESLARATI since August 2019. In his spare time, Joey is playing golf, watching MMA, or cheering on any of his favorite sports teams, including the Baltimore Ravens and Orioles, Miami Heat, Washington Capitals, and Penn State Nittany Lions. You can get in touch with joey at joey@teslarati.com. He is also on X @KlenderJoey. If you're looking for great Tesla accessories, check out shop.teslarati.com

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Tesla’s next-gen Optimus prototype with Grok revealed

The video shows a new Optimus prototype answering questions and taking some very robotic steps, evidently revealing that the next-generation version is in its early stages of development.

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Tesla’s next-generation Optimus robot with AI assistant Grok has been revealed in a new video shared on X.

Tesla CEO Elon Musk was with Salesforce CEO Marc Benioff last night, and it appears the frontman gave Benioff an exclusive look at some upcoming technology.

Tesla talks Semi ramp, Optimus, Robotaxi rollout, FSD with Wall Street firm

The video shows a new Optimus prototype answering questions and taking some very robotic steps, evidently revealing that the next-generation version is in its early stages of development. It features Grok for some additional utility, as it answered questions Benioff asked in the short video.

Here’s what was uploaded to X:

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It appears that there are several big changes to this next-generation version of Optimus, some of which have been discussed by Musk and Tesla in the past.

The first is purely cosmetic, but the gold color that Optimus is wearing in this is a new and fresh look that we have not seen before.

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Perhaps the most interesting change that is evident here is the hands, which are much more detailed than past versions of Optimus:

However, we’re not too sure that these are what will be released with the next-gen Optimus, because they don’t appear to be functional, and they are more reminiscent of mannequin hands than anything.

The hands on Optimus have been a significant part of the program, as they are among the most crucial pieces of equipment on a robot. It needs to be able to perform both delicate and more imposing tasks. Tesla has aimed for Optimus to be able to thread needles or play the piano.

It was one of the most discussed improvements the company mentioned in past comments regarding how it planned to improve from Gen 2 to this next version.

Musk mentioned regarding Optimus:

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“Next-generation Optimus hand, which we have in prototype form, has actuators that have moved to the forearm, just like humans, and they operate the fingers through cables, just like human hands.”

Within Optimus lies a significant opportunity for Tesla to gain considerable strength in terms of market share and valuation.

If Tesla can efficiently develop and deploy the humanoid robot over the next several years, the company stands to gain, as companies will utilize it for tasks that require tedious labor.

Musk recently said Optimus will be a major contributor to Tesla’s valuation moving forward. He believes it will make up roughly 80 percent of the company’s value.

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Elon Musk

Tesla CEO Elon Musk to provide more details for Master Plan Part IV

Musk stated that he would be adding specifics to the plan in a later update.

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Credit: xAI/X

Tesla CEO Elon Musk will be adding more specifics to the recently-released Master Plan Part IV. Musk shared the update on social media platform X amidst conversations about the general nature of the Master Plan Part IV. 

In a conversation on X, Musk responded to a post from Tesla retail shareholder and bull Dave Lee, who observed that the currently released Master Plan Part IV could really just be the introduction to the real plan due to its absence of specifics.

Elon Musk responded, stating that he would be adding specifics to the plan in a later update. “Fair enough. Will add more specifics,” Musk wrote in his post.

Tesla has been following Elon Musk’s Master Plans for decades. The first Master Plan, released in 2006, outlined the company’s path from the original Tesla Roadster to the Model 3, as well as the first steps for Tesla Energy. Master Plan Part Deux, released in 2016, covered the ramp of Tesla Energy, the expansion of Tesla’s vehicle lineup, and the rollout of a Robotaxi service.

Master Plan Part 3 was more ambitious as it was generally an in-depth proposal for achieving a global sustainable entry economy by transitioning to electricity-powered vehicles, homes, and industry, which will, in turn, be powered by renewable energy sources like solar and wind. Master Plan Part 3 also included a five-step plan to accomplish this, allowing the world to transition to a fully electrified future. 

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Master Plan Part IV, which was released a few days ago, focused on automation and artificial intelligence to achieve sustainable abundance. But while the first two Master Plans were very clear and specific and Master Plan Part 3 was very in-depth, Master Plan Part IV was quite general and vague in comparison. It was easy to tell that Optimus would play a big role in the pursuit of sustainable abundance, but apart from that, there were no specifics as to how Tesla intended to achieve its goals.

Fortunately, these specifics would be discussed by Musk in a later update to the plan.

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Tesla just had its best wholesale month this year in China

Tesla China’s wholesale figures include both vehicles that are sold domestically and exported abroad.

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Credit: Tesla China

Tesla China just had its best wholesale month this 2025 so far. In August, the electric vehicle maker sold 83,192 vehicles wholesale, a 22.55% increase compared to July 2025’s 67,886 units.

Tesla China’s wholesale figures are still down year-over-year, but the company’s momentum seems notable, especially with the arrival of the Model Y L.

August 2025 figures

As noted in a CNEV Post report, August 2025’s 83,192 wholesale figures are 4.04% less than the 86,697 units that were sold in the same period last year. It is, however, a 22.55% improvement from the previous month. From January to August, Tesla China sold 515,552 units wholesale, a 12.24% year-over-year decrease. 

It should be noted that Tesla China’s wholesale figures include both vehicles that are sold domestically and exported abroad. With this in mind, August’s results bode well for Tesla China, as it suggests that Gigafactory Shanghai is now hitting its pace with both its domestic deliveries and its exports. Giga Shanghai serves as Tesla’s primary vehicle export hub.

Model Y L factor

Tesla had a challenging first quarter this year, thanks in part to the changeover to the Model Y across the Fremont factory, Giga Texas, Giga Shanghai, and Giga Berlin-Brandenburg. This changeover resulted in low sales in the first quarter. Political controversies surrounding Elon Musk and violence against Tesla stores and vehicles in the first and second quarters in the United States and Europe did not help much either.

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This Q3, however, Tesla seems to be hitting its stride, especially in China. The launch of the new Model Y L has allowed Tesla to compete in the six-seat, large SUV segment, a market that was previously closed to the standard Model Y. Reports have suggested that Tesla China has been seeing a lot of demand for the Model Y L, which should help the company achieve higher sales this quarter and the remaining months of the year.

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