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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. 

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. 

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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.

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

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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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Elon Musk shares SpaceX’s directive that destroys a prevalent media narrative

Musk’s comments followed Starlink’s initiatives for people affected by severe flooding in Indonesia and Cyclone Ditwah in Sri Lanka.

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UK Government, CC BY 2.0 , via Wikimedia Commons

Elon Musk recently shared SpaceX’s standing policy to offer free Starlink service during natural disasters worldwide, highlighting the company’s commitment to pursue aid over profit during times of need. 

Musk’s comments followed Starlink’s initiatives for people affected by severe flooding in Indonesia and Cyclone Ditwah in Sri Lanka.

Starlink activates free service in Indonesia and Sri Lanka

Starlink recently announced free service for those impacted by severe flooding in Indonesia’s Sumatra region, partnering with the government to deploy terminals rapidly to the hardest-hit areas. The offer extends to new and existing customers through December, restoring connectivity in zones where traditional networks have failed due to infrastructure damage.

Musk quoted the post on X, writing, “SpaceX standard policy is to make Starlink free whenever there is a natural disaster somewhere in the world. It would not be right to profit from misfortune.”

Starlink extended the same relief to Sri Lanka amid Cyclone Ditwah, coordinating with local authorities for additional support. The cyclone battered the island nation with heavy rains and winds, disrupting communications for thousands. Free access also lasts until year-end, emphasizing Starlink’s role in bridging gaps during crises.

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“For those affected by the severe flooding in Indonesia and Sri Lanka in the aftermath of Cyclone Ditwah, Starlink is providing free service to new and existing customers through the end of December 2025. We’re also working with the Indonesian government to rapidly deploy terminals and restore connectivity to the hardest-hit areas on Sumatra, as well as with the Sri Lankan government to provide additional assistance,” Starlink wrote in a post on its official website. 

Musk’s companies routinely provide aid

Musk’s firms have a track record of providing critical support in crises, often without fanfare, challenging portrayals of him as a comic book villain intent on enriching himself on the backs of a suffering populace. In January 2024 alone, Tesla opened Superchargers for free in Japan’s Hokuriku region after a magnitude 7.6 earthquake killed at least 55 and injured hundreds.

Similar efforts include Starlink deployments for the 2023 Maui wildfires, 2024 Hurricane Helene in North Carolina, and floods in Texas, where the service was used to help facilitate emergency coordination. These actions, which total millions in waived fees and logistics, demonstrate a proactive ethos among Musk’s companies, with Musk noting in past interviews that such aid stems from engineering solutions over optics.

The initiatives also provide a direct rebuttal of Musk’s characterization on mainstream media, which tends to lean negatively. This has become much more notable in recent years as Musk adopted more conservative policies. These negative sentiments came to a head earlier this year when Tesla stores, vehicles, and even some owners, were attacked during waves of anti-Tesla protests.

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Tesla Cybertruck welcomed with open arms in South Korea

The event featured interactive demos, a light show with the full Tesla lineup, and announcements including FSD Supervised’s planned rollout to Cybertruck by the end of 2025.

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Credit: @hohocho/X

Tesla Korea handed over its first 30 Cybertrucks to owners on Thursday during a ceremonial event at the Cultural Reserve Base in Seoul, marking the all-electric pickup truck’s official debut outside North America. 

The event featured interactive demos, a light show with the full Tesla lineup, and announcements including FSD Supervised’s planned rollout to Cybertruck by the end of 2025.

A historic delivery event

The November 27 event transformed a former oil reserve warehouse into a symbolic launchpad for electric mobility. Attended by 30 new owners, the event included hands-on activities such as hammer-strike durability tests, accessory sales, a lucky draw, and group photos. It culminated in a synchronized light show featuring the 30 Cybertrucks alongside Model S, Model 3, Model X, and Model Y vehicles, which drew cheers from attendees.

Yvonne Chan, Tesla APAC Regional Director, joined as a special guest to celebrate the delivery milestone. Tesla Korea President Seo Young-deuk was also in attendance, and shared his optimism for the company’s momentum in the country. 

“Korea is currently the third-largest market for Tesla sales worldwide, and this year, for the first time, it has achieved the No. 1 spot in imported car brand sales volume, Tesla Korea is growing at an incredibly rapid pace,” he said. “To repay this love from our customers, Tesla plans to continue investing in the Korean market and enhancing the customer experience.”

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FSD Supervised launches in Korea

Seo announced the official introduction of Full Self-Driving (Supervised) in Korea, with Cybertrucks slated for inclusion by the end of 2025, which promoted applause from the event’s attendees. With even the Cybertruck expected to receive FSD this year, Tesla Korea’s fleet could very well become the country’s most advanced vehicles overnight. 

Infrastructure growth remains a priority to support Tesla Korea’s expanding fleet. Tesla Korea’s Supercharger network currently includes 166 sites with 1,133 stalls, with V4 units planned for nationwide highway rest areas to boost long-distance travel. The company also operates seven stores and 15 service centers, though plans are underway to double both by 2027. A new store in Incheon’s Songdo district is scheduled to open by December 2025, enhancing accessibility for western Seoul-area customers.

Seo concluded, “Through all-encompassing investments spanning products, charging infrastructure, and service networks, Tesla Korea will deliver the most refined electric vehicle experience to Korean customers.”

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Tesla China delivery centers packed as Q4 2025 enters its final month

Fresh photos from delivery centers in the country show rows upon rows of Model Ys and Model 3s.

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Credit: Tesla China

Tesla’s delivery centers in China are filled with vehicles as the company ramps up for its final push in Q4 2025. Fresh photos from delivery centers in the country show rows upon rows of Model Ys and Model 3s, signaling strong end-of-quarter momentum.

A delivery push for Q4 2025

A recent aerial shot from a Tesla delivery center in China captures the company’s efforts to deliver as many vehicles as possible as the year comes to a close. As could be seen in the image, which was posted by on X by Tesla enthusiast Nic Cruz Patane, the facility was filled with numerous Model Y and Model 3 units, each vehicle seemingly ready to be handed over to customers.

Echoing the scene, another post, reportedly from two weeks prior, showed a similar scene in a Shanghai location, which was packed with Model Y units. X user Roberto Nores shared the photo, noting that the image also shows multiple Model Y Ls, a six-seat extended wheelbase version of the popular all-electric crossover. 

Towards a strong Q4 finish

China remains Tesla’s volume powerhouse, accounting for a good portion of the company’s global deliveries in recent quarters. That being said, reports did emerge in early November stating that the company only reached 26,006 retail sales during October, as noted in a CNEV Post report. The reasons for this remain to be seen, though a focus on exports could have been a contributing factor.

Tesla China does seem to be hinting at some momentum this November. Just recently, Tesla watchers observed that the order page for the Model Y in China shows a message informing customers that those who wish to guarantee delivery by the end of the year should purchase an inventory unit. This was despite the Model Y RWD and Model Y L showing an estimated delivery timeline of 4-8 weeks, and the Model Y Long Range RWD and Model Y Long Range AWD showing 4-13 weeks. 

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