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Tesla updates 4680 battery cell development at its Kato Rd. facility

(Credit: Tesla)

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Tesla has finally updated the public about the development of its 4680 battery cells, giving new details regarding the development and performance of the new chemistry and additional details about the structural battery pack and how it is performing in crash tests.

4680 Battery Cell

Unveiled at Tesla Battery Day in September 2020, the 4680 battery cell is set to be arguably the most crucial technological development in the company’s mission to accelerate the transition to sustainable energy. During the presentation last year, CEO Elon Musk and VP of Powertrain Drew Baglino outlined the capabilities of the new 4680 battery cell, highlighting five times the energy, a sixteen percent increase in range, six times the power, for less money. The event revealed Tesla’s lengthy research into the 46-millimeter tabless cell and how it performed most efficiently in charging. At the event, Musk said that Tesla is “starting to ramp up production at our pilot 10 GWh factory just around the corner.” Since then, updates have been hard to come by, but we know that companies are building prototypes of the cell and giving them to Tesla in attempts to win a huge contract.

Tesla debuts new 4680 battery cell: 500% more energy, 6X power, range increase

Testing and Efficiency

Tesla said that it has successfully proven the performance and lifetime of the new cell through rigorous testing processes. As of right now, the only thing that remains is ironing out the manufacturing processes of the cell, which continue to plague Tesla’s production output.

The company stated:

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“We have successfully validated performance and lifetime of our 4680 cells produced at our Kato facility in California. We are nearing the end of manufacturing validation at Kato: field quality and yield are at viable levels, and our focus is now on improving the 10% of manufacturing processes that currently bottleneck production output. While substantial progress has been made, we still have work ahead of us before we can achieve volume production.”

The cell’s development is evidently coming along great, according to the automaker’s analysis. The cell is set to be utilized in the Model Y produced at Giga Texas and Giga Berlin. Both facilities are set to begin manufacturing the all-electric crossover later this year.

Manufacturing has always been one of the most complex riddles that automakers, Tesla included, need to solve to improve efficiency and accuracy. It is a never-ending battle, and finding new and more effective ways to produce and manufacture products accurately and with high quality becomes more complex, despite technological advances. The volume production of the 4680 cell is being held up by the final 10% of manufacturing processes that need to be figured out. However, with less than a year of knowing about the facility, Tesla has evidently made tremendous strides in the manufacturing efforts of the cell, and the company could see robust developments and improvements in production after these bottlenecks are solved.

Finally, Tesla also shed more light on the development of the 4680 structural battery pack. Tesla outlined details on this at its Battery Day event as well, stating that the battery pack would be a part of the vehicle’s increased strength and rigidity. It all came down to design.

Credit: Tesla

“The non-cell portion of the battery has negative mass,” Musk said. “We saved more mass in the rest of the vehicle than in the non-cell portion of the battery. So how do you really minimize the mass of the battery? Make it negative.”

The design increased structural rigidity and stiffness, preventing deformation in the event of a crash. However, testing needed to be performed, and Tesla is doing it in-house. The company stated:

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“Internal crash testing of our structural pack architecture with a single-piece front casting has been successful.”

Tesla beat Wall Street estimates by posting a revenue of $11.958 billion, non-GAAP Earnings per Share of $1.45, profitability of $1.3 billion, and a free cash flow of $619 million.

Tesla will hold its Q2 2021 Earnings Call at 5:30 PM EST, 2:30 PM PST.

Joey has been a journalist covering electric mobility at TESLARATI since August 2019. In his spare time, Joey is playing golf, watching MMA, or cheering on any of his favorite sports teams, including the Baltimore Ravens and Orioles, Miami Heat, Washington Capitals, and Penn State Nittany Lions. You can get in touch with joey at joey@teslarati.com. He is also on X @KlenderJoey. If you're looking for great Tesla accessories, check out shop.teslarati.com

Elon Musk

Tesla to ramp to 500 Robotaxis in Austin, 1,000 in Bay Area, by end of 2025: Musk

This was, at least, as per recent comments from CEO Elon Musk during his appearance on the All-In podcast.

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Credit: Tesla

Tesla’s Robotaxi pilot is still in its early stages, but it seems like the program in Austin and the Bay Area will see a notable update soon. This was, at least, as per recent comments from CEO Elon Musk during his appearance on the All-In podcast. 

Robotaxi expansion

While discussing Tesla’s Robotaxi ambitions, Elon Musk shared some tidbits about the company’s targets for the autonomous ride-hailing program. As per Musk, Tesla is pushing to increase its Robotaxi fleet size in Austin to 500 units. The Robotaxi fleet in the Bay Area will also be increased to 1,000 units. These expansions are expected to be accomplished by the end of the year.

“We’re scaling up the number of cars to, what happens if you have a thousand cars? Probably we’ll have a thousands cars or more in the Bay Area by the end of this year, probably 500 or more in the greater Austin area,” Musk said in the podcast. 

Considering that there are only two months left in the fourth quarter of 2025, Tesla’s Robotaxi team will likely be extremely busy during the next eight weeks. A successful expansion of the Robotaxi pilot in Austin and the Bay Area will also bode well for the company’s ride-hailing program, which has been pretty conservative as of late.

Musk’s Robotaxi comments

Elon Musk has been pretty clear in the past that Tesla’s FSD and Robotaxi network would play a huge role in the company’s future valuation and potential. Thus, during the third quarter earnings call, Musk highlighted that Tesla will also be transitioning to a system with no safety monitors in Austin by the end of the year. 

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“We are expecting to have no safety drivers in at least large parts of Austin by the end of this year. So within a few months, we expect to have no safety drivers at all in at least parts of Austin. We’re obviously being very cautious about the deployment,” Musk said during the Q3 2025 earnings call.

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Elon Musk

Neuralink’s first patient could receive an upgrade: Elon Musk

Musk stated that Arbaugh could also be the first Neuralink patient to receive an upgrade.

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Credit: Neuralink

Neuralink’s first human patient might be in line for a very interesting development in the future.

Based on recent comments from Elon Musk, Neuralink seems to be considering an “upgrade” for its first human patient, allowing him to perform even more sophisticated tasks using only his mind. 

Elon Musk’s recent comments

Musk’s update came as a reply to an X post that featured some details about the current activities of Noland Arbaugh, the first person in the world to receive a Neuralink implant. Since receiving his implant, Arbaugh has been able to take back his life, and he now games, attends class, and even works as a paid speaker. 

In his response, Musk stated that Arbaugh could also be the first Neuralink patient to receive an upgrade. “Noland might be the first to receive a Neuralink upgrade and/or dual Neuralink implant to further augment his abilities. It won’t be long before a Neuralink recipient can beat most and eventually all humans at fast reaction video games,” Musk wrote in a post on X.

Noland’s recent update

Noland actually provided a quick update about his life with his Neuralink implant, which he fondly named Eve, on X. He noted that his direct involvement with Neuralink has lessened as more participants have joined the company’s human trials. And despite a recent pressure sore setback, he remains optimistic and teased “big news” coming for his two-year update in early 2026.

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Beyond his recovery, Arbaugh stated that Neuralink has made everyday goals achievable again. He is currently studying neuroscience, taking chemistry, biology, and pre-calculus and maintaining good grades, something he said would have been impossible without Neuralink.

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Tesla Cybercab almost looks production ready in new photos

Tesla’s AI team recently posted an image of the Cybercab going Animal Style at an In-and-Out drive-through.

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Credit: Tesla AI/X

Tesla’s AI team recently posted an image of the Cybercab going Animal Style at an In-and-Out drive-through. But while the Cybercab’s passengers were quite funny, the photos themselves suggest that some of the Cybercab’s components may already be production-ready.

Cybercab goes Animal Style

Seemingly as a fun Halloween post, the Tesla AI team shared a photo of a Cybercab, complete with passengers who were in costume, at an In-and-Out drive through. Based on the photos that were shared on X, it appeared that the Cybrcab was being accompanied by a Tesla Model Y Premium. The Tesla AI team shared a lighthearted caption to the image, writing “Animal Style,” a reference to a popular secret menu item for the fast food chain.

In a way, the Tesla AI team’s Halloween post was a lighthearted reference to the popularity of In-and-Out among Tesla owners. This is partly because of the Tesla Supercharger network, which has numerous locations that are close to In-and-Out sites. Elon Musk has also jokingly confirmed in the past that driving prototype Teslas through an In-and-Out is a tradition and a fun milestone marker.

Apparent production-ready Cybercab sections

While the Tesla AI team’s photos provided some lighthearted fun to the EV community, some industry watchers pointed out that the Cybercab in the photos looked production ready, or at least some parts of it seem to be. This is especially noticeable in the Cybercab’s front end, which looks very refined and well-built. 

The front end of the Cybercab on the In-and-Out photo even had a license plate mount, and previous sightings revealed that the door of the vehicle had been updated since it was unveiled last year.

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With this in mind, speculations are abounding that the Cybercab might indeed be ready for initial production soon. The installation of production equipment in Giga Texas has been ongoing for several months now, and tests of the Cybercab in both the Giga Texas complex and on public roads have also ramped. 

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