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Tesla researcher’s 1 million-mile battery cell breakthrough secures the Semi’s longevity
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.
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
News
Tesla reportedly testing Apple CarPlay integration: report
Citing insiders reportedly familiar with the matter, Bloomberg News claimed that CarPlay is being trialed by the EV maker internally.
Tesla is reportedly testing Apple’s CarPlay software for its vehicles, marking a major shift after years of resisting the tech giant’s ecosystem.
Citing insiders reportedly familiar with the matter, Bloomberg News claimed that CarPlay is being trialed by the EV maker internally. The move could help Tesla gain more market share, as surveys have shown many buyers consider CarPlay as an essential feature when choosing a car.
Not the usual CarPlay experience
Bloomberg claimed that Tesla’s tests involve a rather unique way to integrate CarPlay. Instead of replacing the vehicle’s entire infotainment display, Tesla’s integration will reportedly feature a CarPlay window on the infotainment system. This limited approach will ensure that Tesla’s own software, such as Full Self-Driving’s visuals, remains dominant.
The feature is expected to support wireless connectivity as well, bringing Tesla in line with other luxury automakers that already offer CarPlay. While plans remain fluid and may change before public release, the publication’s sources claimed that the rollout could happen within months.
A change of heart
Tesla has been reluctant to grant Apple access to its in-car systems, partly due to Elon Musk’s past criticism of the tech giant’s App Store policies and its poaching of Tesla engineers during the failed Apple Car project. Tesla’s in-house software is also deemed by numerous owners as a superior option to CarPlay, thanks to its sleek design and rich feature set.
With Apple’s retreat from building cars and Elon Musk’s relationship with Apple for X and Grok, however, the CEO’s stance on the tech giant seems to be improving. Overall, Tesla’s potential CarPlay integration would likely be appreciated by owners, as a McKinsey & Co. survey last year found that roughly one-third of buyers considered the lack of such systems a deal-breaker.
News
China considering EV acceleration limits to curb high-speed accidents
If approved, the regulation would be a national standard.
Recent reports have emerged stating that China is considering new national standards that would restrict how fast electric vehicles can accelerate upon each startup. The potential regulation is reportedly being considered amidst a rise in EV-related crashes.
The draft for the proposed regulation was released by the Ministry of Public Security on November 10. If approved, the regulation would be a national standard.
New regulation targets default performance limits
Under the proposal, all passenger vehicles would start in a state where acceleration from 0–100 km/h (0-60 mph) would take no less than five seconds. This rule would apply to both pure EVs and plug-in hybrids, and it is aimed at preventing unintended acceleration caused by driver inexperience or surprise torque delivery.
The public has until January 10, 2026, to submit feedback before the rule is finalized, as noted in a CNEV Post report.
Authorities have stated that the change reflects growing safety concerns amidst the arrival of more powerful electric cars. The new regulation would make it mandatory for drivers to deliberately engage performance modes, ensuring they are aware and ready for their vehicles’ increased power output before accelerating.
A rise in accidents
China’s EV sector has seen an explosion of high-powered models, some capable of 0–100 km/h acceleration in under two seconds. These speeds were once reserved for supercars, but some electric cars such as the Xiaomi SU7 Ultra offer such performance at an affordable cost.
However, authorities have observed that this performance has led to an uptick in accidents. I recent years, incidents of crashes involving lack of control in vehicles with rapid acceleration have risen, as per an explanatory note accompanying the draft.
Part of this is due to drivers seemingly being unprepared for the power of their own vehicles. For context, driving schools in China typically use cars that accelerate to 100 km/h in more than 5 seconds. This level of acceleration is also typical in combustion-powered cars.
@teslarati 🚨🚨 Tesla Full Self-Driving and Yap is the best driving experience #tesla #fsd #yapping ♬ I Run – HAVEN.
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Tesla Superchargers crowned best EV charging network in the UK for 2025
The Tesla Supercharger network was voted Best Large EV Charging Network for the second consecutive year.
Tesla has once again claimed the top spot in the UK’s most anticipated EV charging satisfaction survey. As per Zapmap’s 2025 driver satisfaction rankings, the Tesla Supercharger network was voted Best Large EV Charging Network for the second consecutive year.
The annual survey, based on thousands of EV driver responses, measures reliability, ease of use, and payment experience across the UK’s public charging landscape.
Tesla tops the survey’s “Large” category
Zapmap’s 2025 rankings, which were drawn from nearly 4,000 battery electric vehicle (BEV) drivers, reflect how quickly public charging is evolving across the UK. For the survey’s “Large” network class, which includes systems with over 500 devices, Tesla once again stood out for reliability and cost efficiency.
The automaker now offers 1,115 open Supercharger devices at 97 public sites, roughly 54% of its total UK network. That’s a 40% increase in public availability compared to September 2024. A particularly appreciated aspect of the Supercharger network is its cost, which continues to be “significantly lower prices than most rapid/ultra-rapid networks, with drivers also appreciating its reliability,” Zapmap noted.
Tesla Regional Manager’s comments
Ollie Dodd, Senior Regional Manager for Northern Europe Charging at Tesla, shared his appreciation for the Supercharger network’s award.
“We’re thrilled to win Zapmap’s Best EV Charging Network for the second year in a row. Being recognized by the drivers themselves shows that our customer-centric and data-driven approach to building sites is well-received. We look forward to showcasing more customer-centric features in 2026 as we expand the network further and look towards new initiatives in roaming and payment methods,” he said.
Conducted during September and October 2025, Zapmap’s eighth annual survey found that reliability and payment flexibility remain top priorities among EV drivers, two things that the Supercharger network particularly excels in. Fortunately for UK EV owners, the Supercharger network is also aggressively growing.
@teslarati 🚨🚨 Tesla Full Self-Driving and Yap is the best driving experience #tesla #fsd #yapping ♬ I Run – HAVEN.
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