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Tesla battery researcher Jeff Dahn’s tests hint at li-ion cells breaking the 2M-mile barrier

Tesla Gigafactory Nevada battery cell production line (Credit: Super Factories)

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Last year, the electric vehicle community’s attention was caught when Tesla battery researcher Jeff Dahn and his team published a paper revealing that quality lithium-ion batteries have the capability to last 1 million miles if used in EVs. A recent presentation from the respected battery pioneer has now revealed that these findings may actually be conservative, as the batteries that Dahn and his team have been testing are still going strong, and are now on track to pass the 2-million-mile mark.

Dahn’s updated findings were discussed in a recent video conference for energy storage and sustainable engineering. According to Dahn, the “million-mile” batteries that were referred to in the past year’s paper are now going towards 10,000 to 15,000 cycles. Considering that the million-mile cells were cycled 5,000 times, it is starting to become evident that the lithium-ion batteries that Dahn’s team have been testing have the potential capability to last 3.5 million km or over 2 million miles if used in an electric vehicle.

https://twitter.com/facts_tesla/status/1317933952645042176?s=20

Remarkably, the lithium-ion cells that are being cycled by Dahn and his team have shown minimal degradation even at this point. With this in mind, there seems to be a good chance that even the study’s “2-million-mile” cells are capable of lasting even longer. Dahn notes that lithium-ion batteries have reached a point where it is becoming imperative to look into the further applications of advanced battery technology, such as vehicle-to-grid, or massive vehicles like airplanes and ferries.

As noted by the team in its 2019 paper, the lithium-ion batteries that it will be using are NMC532 pouch cells obtained from Li-FUN Technology in China. The NMC532 pouch cells are dry batteries as well, using no electrolytes. Interestingly enough, Tesla’s next-generation 4680 cells that the company revealed at Battery Day also utilize dry battery technology developed from the innovations of Maxwell Technologies, a company that the EV maker acquired.

Considering that the batteries which Dahn and his team are testing are just cells acquired from Li-FUN Technology in China, there seems to be a pretty good chance that Tesla’s next-generation 4680 cells could exhibit comparable or even superior performance when they are deployed to the company’s fleet of vehicles and energy storage units in the coming years. If these assumptions prove accurate, then Tesla’s next-generation cells may truly be a class above anything that is being used in the market today. Dahn, for his part, noted that Tesla’s battery strategy is sound.

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“Tesla is just moving forward at the speed of light. They are upscaling their factories, they know they need Tera Watt Hours for both energy storage and vehicles, and it’s incredibly exciting times,” he said.

Watch Jeff Dahn’s recent talk about his team’s battery findings in the video below.

Simon is an experienced automotive reporter with a passion for electric cars and clean energy. Fascinated by the world envisioned by Elon Musk, he hopes to make it to Mars (at least as a tourist) someday. For stories or tips--or even to just say a simple hello--send a message to his email, simon@teslarati.com or his handle on X, @ResidentSponge.

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Cantor Fitzgerald reaffirms bullish view on Tesla after record Q3 deliveries

The firm reiterated its Overweight rating and $355 price target.

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(Credit: Tesla)

Cantor Fitzgerald is maintaining its bullish outlook on Tesla (NASDAQ:TSLA) following the company’s record-breaking third quarter of 2025. 

The firm reiterated its Overweight rating and $355 price target, citing strong delivery results driven by a rush of consumer purchases ahead of the end of the federal tax credit on September 30.

On Tesla’s vehicle deliveries in Q3 2025

During the third quarter of 2025, Tesla delivered a total of 497,099 vehicles, significantly beating analyst expectations of 443,079 vehicles. As per Cantor Fitzgerald, this was likely affected by customers rushing at the end of Q3 to purchase an EV due to the end of the federal tax credit, as noted in an Investing.com report. 

“On 10/2, TSLA pre-announced that it delivered 497,099 vehicles in 3Q25 (its highest quarterly delivery in company history), significantly above Company consensus of 443,079, and above 384,122 in 2Q25. This was due primarily to a ‘push forward effect’ from consumers who rushed to purchase or lease EVs ahead of the $7,500 EV tax credit expiring on 9/30,” the firm wrote in its note.

A bright spot in Tesla Energy

Cantor Fitzgerald also highlighted that while Tesla’s full-year production and deliveries would likely fall short of 2024’s 1.8 million total, Tesla’s energy storage business remains a bright spot in the company’s results.

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“Tesla also announced that it had deployed 12.5 GWh of energy storage products in 3Q25, its highest in company history vs. our estimate/Visible Alpha consensus of 11.5/10.9 GWh (and vs. ~6.9 GWh in 3Q24). Tesla’s Energy Storage has now deployed more products YTD than all of last year, which is encouraging. We expect Energy Storage revenue to surpass $12B this year, and to account for ~15% of total revenue,” the firm stated. 

Tesla’s strong Q3 results have helped lift its market capitalization to $1.47 trillion as of writing. The company also teased a new product reveal on X set for October 7, which the firm stated could serve as another near-term catalyst.

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Elon Musk’s xAI becomes Memphis’ 2nd largest taxpayer in just one year: report

Elon Musk’s artificial intelligence startup, xAI, is reshaping Memphis’s economic landscape.

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Credit: xAI

Elon Musk’s artificial intelligence startup, xAI, is reshaping Memphis’s economic landscape. In just twelve months, the company has become the city and county’s second largest taxpayer.

The update was related in a report from The Wall Street Journal.

Memphis’ second-largest taxpayer

xAI is currently transforming a defunct Mississippi power plant into a crucial hub for AI, supplying electricity to its Colossus supercomputer cluster and its successor, Colossus 2. Together, the Colossi supercomputers will host more than half a million Nvidia chips that would be used for the development and improvement of Grok, xAI’s large language model. 

The buildout has injected billions into the region, making xAI one of Memphis’s most significant private investors and a symbol of the city’s high-tech aspirations. Bill Dunavant III, a Memphis businessman who sits on the board of directors of the city’s chamber of commerce, highlighted xAI’s contribution to the city’s economy in a comment to the WSJ

“In one year, xAI has become the second largest taxpayer in the city and county after FedEx,” he said. A spokesman for the Greater Memphis Chamber of Commerce has also stated that xAI has demonstrated “substantial economic commitment to our region, without any tax incentives.”

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Not without controversy

Despite the economic boost, xAI’s footprint has drawn scrutiny. The company’s natural-gas-powered turbines are expected to consume a substantial amount of water and electricity. Critics have also expressed worries about pollution and increased utility costs, though others see Musk’s wastewater recycling plans and cleanup initiatives as meaningful offsets.

As per the WSJ, xAI’s positioning in the market may be quite different than what Musk is typically used to, considering that the CEO tends to become a first mover in key industries, such as the EV segment with Tesla and private spaceflight with SpaceX. With xAI, however, he is catching up to competitors, the most notable of which is a company he co-founded, OpenAI, and its ubiquitous large language model, ChatGPT.

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Tesla all but confirms that affordable Model Y is coming Tuesday

It does appear that October 7 would be the date when the world sees Tesla’s actual idea of what an affordable vehicle would be like.

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Tesla has released a cryptic teaser of a product that would be announced on Tuesday, October 7, 2025. Based on the company’s hint, it does appear that the product would be the affordable Model Y that has been spotted doing road tests across the country over the past months.

Affordable Model Y sightings

Last week, news emerged that a number of key Tesla influencers visited Gigafactory Texas for a private event. These included veteran Tesla YouTubers, car reviewers, influencers on X, and even a teardown expert who provided the initial insights on how to improve the original Model 3 sedan. At the same time, an uncovered unit of the apparent affordable Model Y was posted online. The vehicle was reportedly sighted close to Giga Texas. 

The new Model Y variant had some notable changes from the standard Model Y. Its fascia seemed inspired by the Model 3 sedan instead of the Cybertruck, and its roof seemed blacked out. Overall, it looked like a simpler Model Y designed to be offered at an affordable price. 

The weekend teasers

Teasers about an upcoming product were posted by Tesla’s official account on social media platform X, though the electric vehicle maker made it a point to keep things very vague. Initially, a closeup video of what appeared to be an aero wheel was posted, though it was vague enough that some speculated that it could be Elon Musk’s long-announced HVAC system instead. 

On Sunday, another teaser video was posted featuring the headlights of a new car. This brought speculations that the new Roadster might finally be announced. Inasmuch as a new Roadster unveiling would be exciting, however, it was evident that the headlights in the new teaser were a match to the uncovered affordable Model Y unit that was spotted close to Giga Texas a few days ago. With this in mind, it does appear that October 7 would be the date when the world sees Tesla’s actual idea of what an affordable vehicle would be like.

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