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Tesla researcher’s 1 million-mile battery cell breakthrough secures the Semi’s longevity

The Tesla Semi gets test driven. [Credit: Emile Bouret/Instagram]

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Tesla lead battery researcher Jeff Dahn and members of the Department of Physics and Atmospheric Science in Dalhousie University recently released a new paper that points to the development of battery cells capable of lasting over 1 million miles on the road, or 20 years if utilized in grid energy storage. 

“We conclude that cells of this type should be able to power an electric vehicle for over 1.6 million kilometers (1 million miles) and last at least two decades in grid energy storage,” the team noted in their paper.

It should be noted that the cells utilized by the researchers are pouch cells as opposed to the cylindrical cells favored by Tesla for its electric vehicles. The new cells feature new chemistry, which improves energy, charge rate and more importantly, allows a larger SOC swing. These optimizations result in savings, both in weight and in cost. 

The idea of a million-mile battery has been mentioned by CEO Elon Musk in the past, together with the development of a drive unit that is also capable of lasting for a million miles on the road. With such innovations in place, Tesla’s battery cells, which are already among the best in the industry, are bound to last even longer. 

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Used in electric vehicles and operated at temperatures controlled to 20C, the new battery cells are expected to retain 95% fractional capacity after the million-mile mark is reached. Battery cells used for energy storage, on the other hand, are expected to retain 90% fractional capacity after over 20 years of service. Commenting on Dahn’s research, Desktop Metal CEO Ric Fulop stated that the second life of these improved battery packs have the potential to change the very nature of the grid in the future. 

These improvements are pretty much the perfect match for some of Tesla’s upcoming projects, particularly its all-electric truck, the Semi. The Semi was announced with a range of either 300 or 500 miles, though Elon Musk has previously hinted that the vehicle will have closer to 600 miles of range per charge instead. The vehicle has garnered warm reception from several large corporations, from UPS to PepsiCo. As such, it is certain that once the Semi gets deployed, the vehicle will be on the road constantly, putting much strain on the truck’s batteries. Having batteries that last longer will make the vehicle more attractive to potential buyers. 

This is where the improvements highlighted by Dahn’s team come in. With longer-lasting batteries, the Tesla Semi could stand toe-to-toe with its diesel-powered counterparts, which typically require an engine overhaul at around the 700k to 1 million-mile mark. Together with a drivetrain that also lasts a million miles and an overall cheaper operating cost, the Tesla Semi could prove to be a competitive alternative to the tried-and-tested diesel rigs of the trucking industry. 

It should be noted that Tesla’s current battery tech is likely far ahead of the cells described by Dahn and his team in their paper. Sharing such data, after all, suggests that Tesla has already developed, or at least, is working on an improved version that would allow them to have an even more considerable advantage in the battery segment. This, of course, could widen the gap between Tesla and its competitors in the electric car industry even further.

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Jeff Dahn and the Dalhousie University team’s 1-million-mile battery paper could be accessed below.

J. Electrochem. Soc. 2019 Harlow A3031 44 by Simon Alvarez on Scribd

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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Tesla is ramping up its advertising strategy on social media

Tesla has long stood out in the automotive world for its unconventional approach to advertising—or, more accurately, its near-total avoidance of it. For over a decade, the company spent virtually nothing on traditional marketing.

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Tesla CEO Elon Musk unveils futuristic Cybertruck in Los Angeles, Nov. 21, 2019 (Photo: Teslarati)

Tesla seems to be ramping up its advertising strategy on social media once again. Marketing and advertising have not been a major focus of Tesla’s, something that has brought some criticism to the company from its fans.

However, the company looks to be making adjustments to that narrative, as it has at times in the past, as ads were spotted on several different platforms over the past few days.

On Facebook and YouTube, ads were spotted that were evidently placed by Tesla. On Facebook, Tesla was advertising Full Self-Driving, and on YouTube, an ad for its Energy Division was spotted:

Tesla has long stood out in the automotive world for its unconventional approach to advertising—or, more accurately, its near-total avoidance of it. For over a decade, the company spent virtually nothing on traditional marketing.

In 2022, Tesla’s U.S. ad spend was roughly $152,000, a rounding error compared to General Motors’ $3.6 billion the following year.

Traditional automakers averaged about $495 per vehicle on ads; Tesla spent $0. CEOElon Musk’s stance was explicit: “Tesla does not advertise or pay for endorsements,” he posted on X in 2019. “Instead, we use that money to make the product great.”

The strategy relied on word-of-mouth from delighted owners, Elon’s massive X following, viral product launches, media frenzy, and customer referrals. A great product, Musk argued, sells itself. It does not need Super Bowl spots or billboards. Resources poured into R&D instead, with Tesla investing nearly $3,000 per car, far more than rivals.

Tesla counters jab at lack of advertising with perfect response

This reluctance wasn’t arrogance; it was philosophy, and Musk made it clear that the money was better spent on the product. Heavy spending on ads was seen as wasteful when innovation and authenticity drove organic demand. Shareholder calls for marketing budgets were ignored.

The current shift, paid Facebook ads promoting Full Self-Driving (Supervised) and YouTube Shorts offering up to $1,000 back on Powerwall batteries, marks a pragmatic evolution.

These targeted campaigns coincide with the end of one-time FSD purchases and a March 31 deadline for FSD transfer eligibility on new vehicles.

This move likely signals Tesla adapting to scale, as well as a more concerted effort to stop misinformation regarding its platform. As EV competition intensifies and the company bets big on robotaxis and energy storage, pure organic buzz may not suffice to hit adoption targets. Selective digital ads allow precise, cost-effective reach without abandoning core principles.

If successful, it could foreshadow measured expansion into marketing, boosting high-margin software and home energy revenue while preserving Tesla’s innovative edge. But, it’s nice to see the strategy return, especially as Tesla has been reluctant to change its mind in the past.

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Tesla Model Y outsells everything in three states, but Ford dominates

The Model Y’s success here highlights accelerating mainstream adoption of electric SUVs, which offer spacious interiors, impressive range, rapid acceleration, and low operating costs.

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Credit: Tesla

The Tesla Model Y was the best-selling vehicle in three different states in the U.S. last year, according to new data that shows the all-electric crossover outsold every other car in a few places. However, Ford widely dominated the sales figures with its popular F-Series of pickups.

According to new vehicle registration data compiled by Edmunds and visualized by Visual Capitalist, the Ford F-Series, encompassing models like the F-150, F-250, F-350, and F-450, claimed the title of best-selling vehicle in 29 states.

This dominance underscores the pickup truck’s unbreakable appeal across much of the country, particularly in rural, Midwestern, Southern, and Western states, where towing capacity, durability, and utility for work or recreation remain top priorities.

The F-Series has held the crown as America’s overall best-selling vehicle for decades, a streak that continued strong into 2025 despite broader market shifts.

Yet, amid this truck-heavy reality, Tesla made a notable breakthrough. The Model Y emerged as the top-selling vehicle, not just the leading EV, but the outright best-seller in three key states: California, Nevada, and Washington.

These West Coast strongholds reflect regions with robust EV infrastructure, high environmental awareness, generous incentives, and tech-savvy populations. In California alone, nearly 50 percent of new vehicle registrations were electrified, far outpacing the national average of around 25 percent.

The Model Y’s success here highlights accelerating mainstream adoption of electric SUVs, which offer spacious interiors, impressive range, rapid acceleration, and low operating costs.

Elon Musk: Tesla Model Y is world’s best-selling car for 3rd year in a row

Elsewhere, Japanese crossovers filled many gaps: Toyota’s RAV4 and Honda’s CR-V topped charts in several urban and densely populated Northeastern and Midwestern states, where fuel efficiency, reliability, and family-friendly features win out over larger trucks.

While Ford’s broad reach shows traditional preferences persist, at least for now, Tesla’s Model Y victories in high-population, influential states signal a gradual but undeniable transition toward electrification. As charging networks expand and battery technology improves, more states could follow the West Coast’s lead in the coming years.

This 2025 map captures a pivotal moment: pickup trucks still rule the majority, but EVs are carving out meaningful territory where consumer priorities align with sustainability and innovation. The road ahead promises continued competition between legacy giants and electric disruptors.

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Elon Musk shares updated Starship V3 maiden launch target date

The comment was posted on Musk’s official account on social media platform X.

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Credit: SpaceX/X

SpaceX CEO Elon Musk shared a brief Starship V3 update in a post on social media platform X, stating the next launch attempt of the spacecraft could take place in about four weeks.

The comment was posted on Musk’s official account on social media platform X.

Musk’s update suggests that Starship Flight 12 could target a launch around early April, though the schedule will depend on several remaining milestones at SpaceX’s Starbase launch facility in Texas.

Among the key steps is testing and certification of the site’s new launch tower, launch mount, and tank farm systems. These upgrades will support the next generation of Starship vehicles.

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Booster 19 is expected to roll to the launch site and be placed on the launch mount before returning to the production facility to receive its 33 Raptor engines. The booster would then return for a static fire test, which could mark the first time a Super Heavy booster equipped with Raptor V3 engines is fired on the pad.

Ship 39 is expected to undergo a similar preparation process. The vehicle will likely return to the production site to receive its six engines before heading to Massey’s test site for static fire testing.

Once both stages are prepared, the booster and ship will roll out to the launch site for the first full stack of a V3 Super Heavy and V3 Starship. A full wet dress rehearsal is expected to follow before any launch attempt.

Elon Musk has previously shared how SpaceX plans to eventually recover Starship’s upper stage using the launch tower’s robotic arms. Musk noted that the company will only attempt to catch the Starship spacecraft after two successful soft landings in the ocean. The approach is intended to reduce risk before attempting a recovery over land.

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“Should note that SpaceX will only try to catch the ship with the tower after two perfect soft landings in the ocean. The risk of the ship breaking up over land needs to be very low,” Musk wrote in a post on X.

Such a milestone would represent a major step toward the full reuse of the Starship system, which remains a central goal for SpaceX’s long-term launch strategy.

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