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Tesla’s 4680 battery ramp may experience a “Death Valley” start, but it will be overcome: expert

Credit: @Gfilche/Twitter

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3 years ago

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To state that Tesla’s future lies in the success or failure of the 4680 battery is not an understatement. Without 4680 cells, Tesla’s efforts to create an affordable car at a price point beneath the Model 3 would likely be for naught. But if the company succeeds in ramping the production of its 4680 cells, Tesla could very well pave the way for electric vehicles to become the dominant form of personal transportation in the decades to come. 

Getting there would not be easy. Tesla formally announced its 4680 battery project in September 2020, and since then, the company has been working hard to ramp the production of the next-generation cell. Tesla produced its one millionth 4680 cell in January. That’s a milestone on its own, but it does show that the company still has a long way to go before it can fully ramp its new battery. 

Industry researcher Benchmark Mineral Intelligence estimates that one million 4680 cells are enough for just about 1,200 Model Ys. Tesla intends to produce far more than that per week in Gigafactory Texas alone. 

Tesla’s 4680 cells are not designed like conventional batteries, and they are not made like traditional cells either. Tesla plans to use a new manufacturing technology called dry electrode coating, which was obtained from the company’s acquisition of Maxwell Technologies in 2019. Dry electrode manufacturing would allow Tesla to skip a conventional step in traditional battery production, which should lower costs significantly. 

While Tesla acquired the technology, the innovations involved in the mass-production of 4680 cells using dry electrode coating are a massive challenge. Elon Musk has noted that the factory equipment for the process alone “doesn’t exist,” so they still have to be made. 

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Shirley Meng, a University of Chicago professor who previously worked with Maxwell, noted that Tesla’s 4680 battery efforts could change the industry. She also emphasized that Tesla’s challenges in mass-producing the next-generation battery would be immense. “He (Elon Musk) is changing the way how battery manufacturing is done. It’s really, really difficult to manufacture at a speed and at scale,” she said. She also stated that Tesla may have to experience a “Death Valley” start to scaling up the dry electrode process for 4680 cells. 

She does, however, believe that Tesla would overcome these difficulties. 

Other experts and longtime followers of the company seem to agree on the difficulty involved in developing and ramping a new type of battery cell. Caspar Rawles, chief data officer at Benchmark Mineral Intelligence, noted that fine-tuning the production equipment for battery production alone is an extremely long process, and one that challenges even the industry’s veterans. “There’s a very long process of fine-tuning the equipment before you can get to volume production. Battery production is hard, even hard for experienced suppliers,” he said. 

This definitely seems to be the case with Panasonic. The Japanese tech conglomerate has been a longtime partner of Tesla, and it already operates Gigafactory Nevada with the EV maker. However, recent comments from Kazuo Tadanobu, the CEO of Panasonic’s energy division, revealed that even Panasonic had to take its time to develop its 4680 batteries. Tadanobu noted that Tesla has already deemed Panasonic’s 4680 cells viable for use, but mass production of the new batteries is still expected to start by the fiscal year ending in March 2024.  

Tesla’s 4680 cells are expected to be used in vehicles like the Tesla Semi, the Cybertruck, and the company’s flagship supercar, the new Roadster. The next-generation batteries are also expected to be utilized in Tesla’s next big project, the production of an affordable $25,000 electric car.  

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*Quotes courtesy of Reuters.

Don’t hesitate to contact us with news tips. Just send a message to simon@teslarati.com to give us a heads up.

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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 confirms Grok 4 launch on July 9 with livestream event

The rollout will be accompanied by a livestream at 8 p.m. Pacific Time.

Published

3 hours ago

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July 8, 2025

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Credit: xAI/X

Elon Musk has officially confirmed that Grok 4, the latest version of xAI’s large language model, will launch on July 9. The rollout will be accompanied by a livestream at 8 p.m. Pacific Time, hosted on xAI’s official account on X.

xAI goes straight to Grok 4

Back in May, leaks indicated that xAI was getting ready to ship Grok 3.5. Considering Musk’s recent comments, however, it appears that the artificial intelligence startup would be focusing on the large language model’s fourth iteration instead. As noted in a Financial Express report, users on X have sighted references to Grok 4 in the lead up to the update’s launch, such as “grok-4-prod-mimic” and “Grok 4 Code.”

Musk’s Grok 4 announcement comes as AI competition intensifies between major players including OpenAI, Google, and xAI. With Musk’s Colossus supercomputer fully operational in Memphis, xAI appears to be accelerating its AI product roadmap.

Musk pushes Grok toward political neutrality

Grok 4’s launch also follows a recent controversy involving political bias, as noted in a CNN report. Last week, Grok responded to a user on X stating that political violence in the U.S. since 2016 had come more from the political right than the left. The chatbot noted in a later reply that its answer was based on information from sources like Reuters, the Journal of Democracy, and University of Maryland studies. 

Musk stated that Grok’s response was a “major fail.” “Major fail, as this is objectively false. Grok is parroting legacy media. Working on it,” he wrote in a post on X. By the end of June, Musk noted that he was “grinding all night with the xAI team” and that they were making “good progress.” He also stated that the model “Will be called Grok 4. Release just after July 4th. Needs one more big run for a specialized coding model.”

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Tesla opens massive solar Supercharger station in California

The Supercharger opened to customers ahead of Fourth of July weekend, while Tesla continues phase two of construction on the site.

Published

8 hours ago

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July 7, 2025

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Credit: Tesla Charging | X

Tesla has officially launched the first several Supercharging posts at a massive station in California, notably including solar canopies and grid-scale batteries to offer completely renewable charging.

Last week, Tesla announced on X that it opened the first 84 Supercharger stalls of a planned 168-stall station in Lost Hills, California. Additionally, the massive Supercharger project features 11MW of solar canopies and 10 Megapack batteries for off-grid charging powered entirely by solar energy.

Tesla completed the first phase of the project just days ahead of the busy Fourth of July holiday weekend, adding that initial construction took just eight months. In addition to the remaining charging stalls, Tesla says it’s building a set of lounge areas, renderings of which can be seen below alongside current photos of the site.

Notably, the site also includes V4 charging posts for the company’s latest available charging speeds, and it’s located near the busy junction between I-5 and Highway 46 in Kern County.

“Thank you [Kern County] and [PG&E] for collaboration and approvals,” Tesla wrote in a follow-up post.

Credit: Tesla Charging | X

Credit: Tesla Charging | X

Credit: Tesla Charging | X

Credit: Tesla Charging | X

READ MORE ON TESLA SUPERCHARGERS: Tesla launches ultra-fast V4 Superchargers in China for the first time

Testing at the LA Diner, plus Musk update on potential Tesla solar Gigafactory

The huge Tesla Supercharger station completed phase one of construction fairly quickly, especially given how long Tesla has been working on its unique Los Angeles diner, drive-in, and Supercharger location. Still, the company was seen performing some testing at the nearly-completed charging station earlier this month, and will reportedly be holding a job fair.

Elon Musk also responded on Monday morning to a post on X, suggesting that Tesla is “thinking about” building a U.S.-based solar Gigafactory in order to help support increased power needs with AI growth, and to bolster domestic solar production.

Tesla is building a new UFO-inspired Supercharger in the heart of Alien country

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Tesla driver walks away from major accident with minor injuries

The driver sustained only minor injuries, and the exact cause of the crash remains under investigation.

Published

10 hours ago

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July 7, 2025

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Credit: CHP Los Banos (via Facebook)

The driver of a Tesla Model Y survived and walked away from a harrowing accident on Monday in California, only sustaining minor injuries despite the vehicle being impaled by a guardrail.

On Monday morning around 4:34 a.m., the Los Banos division of the California Highway Patrol (CHP) responded to the accident on I-5 near Panoche Road, involving a 23-year-old in a Tesla Model Y. According to a post on social media, the driver veered off the road for unknown reasons in the northbound lane, before crashing directly into the guardrail and impaling the vehicle.

You can read the full message and photos from Los Banos CHP below, as were shared in a Facebook post on Monday afternoon.

This morning a Tesla model y was traveling in the #1 northbound lane of I-5 north of Panoche Rd. For unknown reasons driver allowed V-1 to veer off the roadway, travel through a dirt center divide, and crashed into the fixed metal guardrail. Lucky for the driver he only sustained minor injuries and was able to walk away. Driving a vehicle requires 100% attention to the road. Avoid distractions and focus on driving.

Credit: CHP Los Banos (via Facebook)

Credit: CHP Los Banos (via Facebook)

Credit: CHP Los Banos (via Facebook)

In a statement to SFGate, CHP officer Myles Anderson said that the driver only sustained minor injuries, while no arrests are made and drugs and alcohol are not suspected to have been involved. The report also notes that Tesla’s “cruise control and lane assistance features” were activated, according to Anderson. However, it’s not entirely clear if this is referring to Supervised Full Self-Driving (FSD), or to the cruise control and lane assist features baked into Autopilot.

At the time of writing, CHP has not yet responded to Teslarati’s request for clarification and additional details on the matter.

READ MORE ON TESLA SAFETY: Tesla rolls out crucial new safety feature aimed at saving children

The news comes after Tesla has touted its vehicles as incredibly safe for many years. In December, for example, the company highlighted receiving top safety scores from regulators on four different continents throughout the world, including from the National Highway Traffic Safety Administration (NHTSA) and the Insurance Institute of Highway Safety (IIHS) in the U.S.

Tesla has also listed the goal of making its vehicles the safest on the road throughout the years, both in the overall design of its vehicles and in its Autopilot and Full Self-Driving (FSD) programs.

Tesla Model 3 ranks as the safest new car in Europe for 2025, per Euro NCAP tests

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