

News
Tesla’s battery team is on the verge of a new cell with revolutionary density
Tesla’s battery research team in Canada, led by Jeff Dahn, is on the verge of proving revolutionary battery density through a new, next-gen battery cell. The team released its findings in a new paper, which shows how to combat anode-free cell failure through electrolyte solutions.
The paper is titled “Diagnosing and correcting anode-free cell failure via electrolyte and morphological analysis.” Dahn and his team of researchers at Dalhousie University show that some of the anode-free battery cells that are used tend to store more energy per volume than traditional lithium-ion cells. This is crucial in increasing the range availability of electric cars.
The anode-free batteries also are lighter than traditional cells, according to Hansen Wang, a battery researcher at Stanford University.
“The idea is to only use lithium on the cathode side to reduce weight,” Wang said in an interview with the prestigious school in Northern California.
However, with the increased energy storage capacity, some downsides become present. One fallback is the cells “tend to experience rapid capacity loss and short cycle life,” the paper’s abstract says on Nature. There are also safety issues with anode-free cells that pertain to the metallic lithium that is present within.
Dahn and his team stated that the anode-free cells are capable of an extended lifespan when a dual-salt carbonate electrolyte solution is used to combat the effects of degradation.
The team states:
“Recently, we demonstrated long-lifetime anode-free cells using a dual-salt carbonate electrolyte. Here we characterize the degradation of anode-free cells with this lean (2.6 g Ah−1) liquid electrolyte. We observe deterioration of the pristine lithium morphology using scanning electron microscopy and X-ray tomography, and diagnose the cause as electrolyte degradation and depletion using nuclear magnetic resonance spectroscopy and ultrasonic transmission mapping. For the safety characterization tests, we measure the cell temperature during nail penetration.”
When Dahn’s team utilized the dual-salt carbonate electrolyte solution in battery cells, it showed that an inactive mix of dead lithium forms large lithium columns in the cell. This creates an exemplary lithium morphology within the cell, which could solve the issues with a short lifespan.
In the past, Tesla patented an electrolyte solution that could be added to lithium-ion batteries to extend a cell’s lifespan.
The optimized electrolyte successfully extended the lifetime of anode-free cells to 200 total cycles, which is a significant improvement from other findings. For example, the previously mentioned experiment at Stanford University was performed in June 2020. This experiment showed that anode-free battery cells ran 100 cycles before the capacity dropped to 80 percent.
The improvements in battery cell lifespan will eventually lead to longer-lasting cells in electric vehicles. Tesla has been working toward a million-mile capable battery cell for an extended period, which could be unveiled at the company’s Battery Day event on September 22.
Energy density is ultimately the key to more extended range, but there is a fine line between jeopardizing lifespan for more miles per charge. Ultimately, the research with Dahn’s team will continue, and it is a significant advancement in terms of what past research has shown.
The “Diagnosing and correcting anode-free cell failure via electrolyte and morphological analysis” paper is available here.
News
Sweden blocks Tesla FSD-style testing in Stockholm
It looks like FSD testing in Sweden would have to wait some time.

Tesla is putting a lot of effort into getting its Full Self Driving (FSD) system approved in territories outside North America. But while China seems to have embraced FSD fully, other countries like Sweden do not seem to be receiving Tesla’s automated driving system very well.
This became quite evident in a document from Stockholm City, which has started making the rounds online.
FSD Testing Rejected
The document, which was initially shared by X user @KRoelandschap, indicated that the Swedish Traffic Department in Stockholm had rejected Tesla’s request to start FSD testing in the city’s streets. Tesla has been demonstrating FSD in several areas across Europe, so it is not surprising that the company is also attempting to test its automated driving system in Sweden.
Unfortunately for Tesla, Sweden might prove to be a tough nut to crack. As per the City of Stockholm:
“The Traffic Office is currently working on updating its approach to automation. At the same time, the city and the office are under heavy pressure from other ongoing innovation tests. Our ambition is to actively participate in and learn from the continued development in the field of automation.
“Based on this, and in combination with the fact that the current test is the first of its kind, which entails certain risks for both infrastructure and third parties, and that it is planned to be carried out throughout the city, the City of Stockholm considers it is currently not possible to approve the implementation of the test.”
Tesla’s Other Swedish Troubles
Sweden’s FSD testing rejection is not the only roadblock facing Tesla in the country. Since October 2023, Swedish unions have been engaged in an active effort to disrupt Tesla’s operations. The unions’ efforts have been varied, with some resulting in Tesla having difficulty launching more Superchargers in Sweden. Despite this, Tesla has remained stubborn and has refused to bow to the unions’ demands.
Fortunately for Tesla, it seems like its numbers are still strong. Despite the company’s decline in several European countries, the new Model Y is starting to see strong sales figures in Sweden. In early May alone, the new Model Y became the country’s most popular electric vehicle—a notable accomplishment considering the unions’ active efforts to disrupt Tesla.
News
Tesla firmware shows new Model Y seat configuration is coming
Tesla could be adding another seating configuration beside the seven-seater to the Model Y lineup later this year.

Tesla firmware has been a great place for some to reveal what the company has in the pipeline, and a new seating configuration for the best-selling Model Y looks to be on the way.
Last week, we reported that Tesla was already hinting toward a 7-seater configuration of the Model Y in a promotional email it sent to those on its contact list.
However, firmware revealed by Tesla hacker greentheonly is showing that a new seating configuration is on the way — a six-seater:
The much rumored about 6-seater Model Y made an appearance in the firmware.
Unlikely to be China-only as some of the speculations said.Some weird “slow down to save energy, people typically drive this much slower here to save %%” nav suggestions.
— green (@greentheonly) June 16, 2025
Green says the configuration would not be available in China-only, and will be potentially for sale in other markets as well.
The six-seat and seven-seat configurations of the Model Y were available in the Legacy version of the vehicle, but were met with mixed reviews, as many complained about the lack of legroom in the third row.
This was something that was a real concern for many of those owners who needed something larger than the traditional five-seat variant, but did not want to buy the much more pricey Model X.
We’ve covered the size of that third row on several occasions.
Some owners even took the idea of having a seven-seater into their own hands:
Tesla Model Y third row seat test explores options for a comfortable 7-seat setup
Tesla did not explicitly announce a six-seater configuration of the Model Y, but Lars Moravy, the company’s VP of Vehicle Engineering, said the seven-seater would come to production later in 2025.
News
Tesla confirms massive hardware change for autonomy improvement
Tesla has confirmed that a recent change made to some of its recently refreshed vehicles is, in fact, a strategy it will use to improve its suite as it continues to work toward autonomy.

Tesla has confirmed that a recent change made to some of its recently refreshed vehicles is, in fact, a strategy it will use to improve its suite as it continues to work toward autonomy.
Tesla first introduced a front-facing camera on the front bumper with the Cybertruck.
Then, the Model Y “Juniper” received the hardware update. The Model S and Model X both received the front-facing camera with its latest update, which was officially revealed last week.
Tesla used new language with the release of the front-facing cameras on the Model S and Model X, confirming they will assist with several things, including “using Autopilot and Actually Smart Summon capabilities”:
“Enhanced visibility when parking or using Autopilot and Actually Smart Summon capabilities.”
This tiny feature on the new Tesla Model Y is perhaps its biggest addition
This is the first time Tesla has used this sort of language, as it was a completely different description with the launch of the new Model Y in January.
When Tesla launched this vehicle, it said the front bumper camera “provides a wider field of view for automatic assisted driving and advanced Smart Summon.”
Tesla switched from using cameras and sensors to only cameras with the launch of Tesla Vision several years ago. The company’s utilization of cameras comes from Tesla’s belief that Ultrasonic Sensors (USS) are not needed for self-driving efforts:
“Along with the removal of USS, we simultaneously launched our vision-based occupancy network – currently used in Full Self-Driving (FSD) (Supervised) – to replace the inputs generated by USS. With today’s software, this approach gives Autopilot high-definition spatial positioning, longer range visibility and the ability to identify and differentiate between objects. As with many Tesla features, our occupancy network will continue to improve rapidly over time.”
CEO Elon Musk has said that sensors were only a crutch and that self-driving would be solved through the use of cameras:
“When your vision works, it works better than the best human because it’s like having eight cameras, it’s like having eyes in the back of your head, beside your head, and has three eyes of different focal distances looking forward. This is — and processing it at a speed that is superhuman. There’s no question in my mind that with a pure vision solution, we can make a car that is dramatically safer than the average person.”
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