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Tesla’s 4680 cell production process outlined in Giga Berlin’s revised filings

Credit: Tesla, Tobias Lindh/Twitter

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Tesla’s revised documents for Gigafactory Berlin have been posted online, and they are a treasure trove of information. The documents provided some new details about Tesla’s planned 4680 battery plant in Gigafactory Berlin, which Elon Musk noted is on track to be one of the world’s largest battery production facilities. They also outlined how Tesla’s 4680 cells are produced. 

While sections of the filing pertaining to the planned 4680 battery cell plant in Giga Berlin were blacked out due to sensitive information that could not be made public, the documents show some important tidbits about the upcoming facility. This includes the facility’s cell production operations over four floors, with anode and cathode production on the first floor and tabless cell production on the third floor. The battery plant is massive, requiring large foundations similar to Gigafactory Berlin’s Phase 1 zone. 

Most importantly, Tesla also submitted a simplified diagram of its 4680 battery cell production process, though most of the diagram was blacked out in the revised filing’s public release. However, the company provided a brief overview of how its new battery cell will be produced in the upcoming facility (roughly translated through Google Translate). 

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“The battery the Gigafactory Berlin requires special systems and process steps. The anodes and cathodes consist of coated current collector foils. Copper is used as the material for the anode foil and aluminum is used for the cathode foil. The anode and cathode components are manufactured in mixed processes (A020-01 and A020-02), which only use materials in powder form. The new materials used are tested and approved in our own laboratory (A020-11). 

“In order for the powder coating to adhere to the two films, they must first be pre-coated with a thin layer of adhesive (substrate) (A020-03 and A020-04). This substrate is delivered in containers. The pre-coating is necessary because a dry coating with powder takes place. After the anode and cathode components have been mixed, they are applied as a coating to the respective substrate-coated film in order to establish electrical contact (A020-05 and A020-06). The current collector foils, coated with the anode or cathode components, result in the finished anode or cathode. 

The revised filings also provided a general idea of how Tesla’s tabless cell production works. Among these is the fact that the finished 4680 cells would be subjected to 10 days’ worth of curing after their formation. 

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“The anode or cathode is then cut to the required lengths with a laser in the “tabless process” (A020-08). The anode, the cathode and the separator are alternately placed one on top of the other and rolled up into a roll. This roller is then inserted into a metal housing, which is manufactured from steel rollers in a die-cutting and deep-drawing process (A020-07). In the assembly area, the final assembly and filling of the cell takes place with small amounts of electrolyte (approx. 10% of the cell weight) (A020-09). 

“The electrolyte is absorbed by the electrode coatings and enables the lithium ions to move back and forth between the anode and cathode. The housing is then closed with a lid in a welding process. The last step is the formation (A020-10) of the cell. In the formation process, the cell is electrically started up by charging and discharging it under different temperature conditions. The finished cell remains in this area for approx. 10 days and is then put to further use. The cells produced are subjected to random quality control in our own laboratory (A020-11).” 

A link to Tesla’s filings for Gigafactory Berlin could be found here

Do you have anything to share with the Teslarati Team? We’d love to hear from you, email us at tips@teslarati.com.

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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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Tesla vandal who lit Las Vegas repair center on fire arrested

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A vandal in Las Vegas who lit a Tesla repair center on fire has been arrested, bringing a name and face to the crime that engulfed vehicles and a structure in flames.

Officers in Las Vegas arrested Paul Kim, a 36-year-old, on Wednesday. He faces charges of arson and possessing an explosive device.

The Tesla repair center at 6260 West Badura Avenue was set aflame on March 18 at around 2:45 a.m. In total, five vehicles were set on fire, as well as the building itself. It was one of the more notable instances of vandalism against Tesla in recent months, but police now have their culprit.

Las Vegas Metro Police Department Sheriff Dori Koren described the weapons Kim used to execute the attack:

“He used what appeared to be multiple Molotov cocktails and firearms to conduct his attack.”

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As the instances of attacks on Tesla continue to be publicized, we are now seeing considerable pushback from owners, the company, and even the United States government regarding what it calls “domestic terrorism.”

Owners are now filing lawsuits against those who vandalize their vehicles, as the first civil suit against a vandal was filed in Texas yesterday.

Tesla has not made any moves itself against the vandals, but we expect the company to potentially enter some litigation against groups or politicians that incite violence against its property and the owners of its vehicles.

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Additionally, the U.S. government has utilized the FBI to probe incidents against Tesla as a part of them being constituted as instances of domestic terrorism. Earlier this month, the Bureau established a specific task force to handle Tesla-related attacks.

“The FBI has been investigating the increase in violent activity toward Tesla, and over the last few days, we have taken additional steps to crack down and coordinate our response,” FBI head Kash Patel said on X. “This is domestic terrorism. Those responsible will be pursued, caught, and brought to justice.”

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Elon Musk clarifies Trump tariff effect on Tesla: “The cost impact is not trivial”

The U.S. President has stated that Elon Musk stayed silent and provided no input in the administration’s tariffs.

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MINISTÉRIO DAS COMUNICAÇÕES, CC BY 2.0 , via Wikimedia Commons

U.S. President Donald Trump’s plan to implement a 25% tariff on non-U.S.-made vehicles starting next week would affect American electric car maker Tesla. 

This was confirmed by CEO Elon Musk in a recent post on social media platform X.

Musk and Trump

While Elon Musk works closely with the Trump administration due to his role in the Department of Government Efficiency (DOGE), the U.S. president has emphasized that the Tesla CEO never asks for favors. This was highlighted in his recent comments, when he stated that Elon Musk stayed silent and provided no input in the administration’s 25% auto tariffs.

When asked by reporters if the new tariffs would be good for Tesla, Trump noted that they may be “net neutral or they may be good.” The U.S. president also pointed to Tesla’s automotive plants in Fremont, California and Austin, Texas, which produce vehicles that are sold in the country. “Anybody that has plants in the United States — it’s going to be good for them,” Trump noted.

Tesla Affected

In a post on X, Elon Musk clarified that the Trump administration’s tariffs would affect the prices of vehicle parts that are sourced from other countries. This was a concern that Tesla previously outlined in a letter to the U.S. Trade Representative, which noted that even with “aggressive localization” of its supply chain, “certain parts and components are difficult or impossible to source within the United States.”

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As per Musk in his recent post on X, the cost impact of the Trump administration’s tariffs is no joke. “To be clear, this will affect the price of parts in Tesla cars that come from other countries. The cost impact is not trivial,” Musk wrote in his post.

Potential Effects

Reactions to Musk’s comments from users of the social media platform were varied, with some speculating that the Trump auto tariffs could result in Teslas becoming more expensive in the United States. Despite this, the potential increases in Tesla’s vehicle prices might not be as notable as other cars, particularly those that are produced outside the country.

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Hyundai’s $7.6B Georgia plant dodges Trump’s 25% Tariffs  

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Hyundai-Georgia-plant-vs-trump-tariffs
(Credit: Hyundai USA)

Hyundai’s $7.6 billion Georgia plant dodged U.S. President Donald Trump’s recently announced tariffs on imported vehicles and auto parts.

The South Korean automaker’s Hyundai Motor Group Metaplant America (HMGMA) in Georgia celebrated its opening recently by announcing plans to expand the factory. Hyundai aims to boost production by two-thirds, increasing HMGMA’s capacity from 300,000 to 500,000 vehicles annually.

“This plant couldn’t come at a better time than now. Because definitely all the cars that we would produce here are going to be exempted from any tariffs,” said Hyundai Motor Company CEO Jose Munoz.

President Donald Trump recently announced 25% tariffs on auto imports at the White House. President Trump praised the HMGMA plan in Georgia, commenting it was a “clear demonstration that tariffs very strongly work.”

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According to the Associated Press, the Georgia expansion ties into $21 billion in U.S. investments. It includes a $5.8 billion steel mill in Louisiana, which will supply parts for Georgia and Alabama plants.

Hyundai aims to employ 8,500 workers at the Bryan County site. Battery partners are estimated to add 3,500 more jobs. The car company does not have worker estimates for HMGMA’s expansion plans.

Hyundai Motor Group Executive Chairman Euisun Chung said the legacy automaker came to Georgia “to stay, to invest and to grow.”

“Standing here today, I can say I have never been more confident about building the future of mobility with America, in America,” Chung said.

Hyundai started EV production in Georgia six months ago. As of this writing, over 1,200 workers run the massive plant. Hyundai’s Georgia factory builds two electric SUVs now. The IONIQ 5 is already in production. Hyundai will start producing the IONIQ 9 this spring. Hyundai plans to produce hybrids, too. Munoz predicted hybrids would eventually make up one-third of production.

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