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Tesla battery partner Panasonic shares insights on 4680 cell development

(Credit: Panasonic)

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Kazuo Tadanobu, the CEO of Panasonic’s energy division, recently shared some insights about the company’s upcoming 4680 batteries, which would be sold to longtime partner Tesla. Tadanobu mentioned a number of key observations about the upcoming batteries, particularly on how the 4680 cells could effectively initiate change in the transportation sector. 

Panasonic has been working on its 4680 battery for about a year and a half now, and it has not been easy. According to the executive, the development of the new batteries has “taken an immense amount of stamina.” This was because creating 4680 batteries is not as simple as enlarging existing cells. Tadanobu noted that changing the entire shape of the cell took “considerable nerve,” and that Panasonic “didn’t know how they would be received” by Tesla. 

Fortunately for Panasonic, Tesla has reportedly acknowledged the Japanese company’s work on its 4680 batteries. Tesla has reportedly deemed Panasonic’s 4680 cells viable, as they meet the level of performance that the American electric vehicle maker is seeking. This is a good sign for Panasonic’s 4680 program, considering that Tesla itself is also ramping the production of its in-house 4680 cells. 

Tesla’s home-grown 4680 cells will likely see their initial deployment in the Made-in-Texas Model Y, which will be produced at Gigafactory Texas. So far, Tesla’s 4680 production is limited to the company’s pilot line in Kato Road, close to the Fremont Factory. That’s a facility that has the potential to ramp to 10 GWh per year, but it’s still being improved today, with the company announcing last month that it had produced its 1 millionth 4680 battery cell in January. Tesla would likely need as many 4680 batteries as it could get, considering the launch of upcoming vehicles such as the Cybertruck, Semi, and new Roadster. 

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Panasonic, for its part, has been sharing its battery partnership with Tesla with rivals such as LG Energy Solution and Contemporary Amperex Technology Co. (CATL), both of which are extremely aggressive. Yet despite the rising competition, such as LG Energy Solution previously stating back in 2020 that it intends to be Tesla’s primary battery supplier in the future, Panasonic believes that the quality and safety of its batteries would speak for themselves.  

According to Tadanobu, Panasonic’s advantage in the market lies in its capability to “use craftsmanship to maintain safety even while raising the performance of a battery.” And after leading the development of the next-generation cells, the executive noted that Panasonic would work very hard to retain its spot. “We don’t want to lose,” the Panasonic executive said. 

Overall, the executive explained that Panasonic’s hard work in developing 4680 batteries for clients like Tesla is due to the company’s belief that the cells themselves have the potential to change the world of transport. If 4680 battery cells become successful, they would have a considerable impact in lowering the cost of electric vehicles. And if this happens, electric vehicle adoption would likely increase. “We see them as a new path forward,” Tadanobu said.  

*Quotes courtesy of Bloomberg, which interviewed Tadanobu in Osaka. 

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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 ships out update that brings massive change to two big features

“This change only updates the name of certain features and text in your vehicle,” the company wrote in Release Notes for the update, “and does not change the way your features behave.”

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Credit: Tesla

Tesla has shipped out an update for its vehicles that was caused specifically by a California lawsuit that threatened the company’s ability to sell cars because of how it named its driver assistance suite.

Tesla shipped out Software Update 2026.2.9 starting last week; we received it already, and it only brings a few minor changes, mostly related to how things are referenced.

“This change only updates the name of certain features and text in your vehicle,” the company wrote in Release Notes for the update, “and does not change the way your features behave.”

The following changes came to Tesla vehicles in the update:

  • Navigate on Autopilot has now been renamed to Navigate on Autosteer
  • FSD Computer has been renamed to AI Computer

Tesla faced a 30-day sales suspension in California after the state’s Department of Motor Vehicles stated the company had to come into compliance regarding the marketing of its automated driving features.

The agency confirmed on February 18 that it had taken a “corrective action” to resolve the issue. That corrective action was renaming certain parts of its ADAS.

Tesla discontinued its standalone Autopilot offering in January and ramped up the marketing of Full Self-Driving Supervised. Tesla had said on X that the issue with naming “was a ‘consumer protection’ order about the use of the term ‘Autopilot’ in a case where not one single customer came forward to say there’s a problem.”

It is now compliant with the wishes of the California DMV, and we’re all dealing with it now.

This was the first primary dispute over the terminology of Full Self-Driving, but it has undergone some scrutiny at the federal level, as some government officials have claimed the suite has “deceptive” names. Previous Transportation Secretary Pete Buttigieg was one of those federal-level employees who had an issue with the names “Autopilot” and “Full Self-Driving.”

Tesla sued the California DMV over the ruling last week.

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Tesla workers push back against Giga Berlin unionization

“IG Metall did not succeed in Giga Berlin‘s works council election earlier today. The union share was reduced from nearly 40% in 2024 to 31% in 2026! This is a clear message by the Giga Berlin team towards an independent co-determination! The list called Giga United, led by the current chairwoman, Michaela Schmitz, received the most votes with more than 40%! Good news for Giga Berlin!”

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Tesla workers pushed back against unionization efforts at Gigafactory Berlin, and over the past few years, there has been a dramatic decrease in interest to unionize at the German plant.

Gigafactory Berlin Plant Manager André Thierig announced on Wednesday that IG Metall, the European union group, saw its share reduce from 40 to 31 percent in 2026 as employees eligible to vote on the issue. Instead, the Giga Berlin team, known as Giga United, received the most votes with more than 40 percent.

Thierig gave specific details in a post on X:

“IG Metall did not succeed in Giga Berlin‘s works council election earlier today. The union share was reduced from nearly 40% in 2024 to 31% in 2026! This is a clear message by the Giga Berlin team towards an independent co-determination! The list called Giga United, led by the current chairwoman, Michaela Schmitz, received the most votes with more than 40%! Good news for Giga Berlin!”

There were over 10,700 total employees who were eligible to vote, with 87 percent of them turning out to cast what they wanted. There were three key outcomes: Giga United, IG Metall, and other notable groups, with the most popular being the Polish Initiative.

The 37-seat council remains dominated by non-unionized representatives, preserving Giga Berlin as Germany’s only major auto plant without a collective bargaining agreement.

Thierig and Tesla framed the outcome as employee support for an “independent, flexible, and unbureaucratic” future, enabling acceleration on projects like potential expansions or new models. IG Metall expressed disappointment, accusing management of intimidation tactics and an “unfair” campaign.

The first election of this nature happened back in 2022. In 2024, IG Metall emerged as the largest single faction with 39.4 percent, but non-union lists coalesced for a majority.

But this year was different. There was some extra tension at Giga Berlin this year, as just two weeks ago, an IG Metall rep was accused by Tesla of secretly recording a council meeting. The group countersued for defamation.

Tesla Giga Berlin plant manager faces defamation probe after IG Metall union complaint

This result from the 2026 vote reinforced Tesla’s model of direct employee-management alignment over traditional German union structures, amid ongoing debates about working conditions. IG Metall views it as a setback but continues advocacy. Tesla sees it as validation of its approach in a competitive EV market.

This outcome may influence future labor dynamics at Giga Berlin, including any revival of expansion plans or product lines, which Musk has talked about recently.

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SpaceX President Gwynne Shotwell details xAI power pledge at White House event

The commitment was announced during an event with United States President Donald Trump.

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Credit: xAI

SpaceX President Gwynne Shotwell stated that xAI will develop 1.2 gigawatts of power at its Memphis-area AI supercomputer site as part of the White House’s new “Ratepayer Protection Pledge.” 

The commitment was announced during an event with United States President Donald Trump.

During the White House event, Shotwell stated that xAI’s AI data center near Memphis would include a major energy installation designed to support the facility’s power needs.

“As you know, xAI builds huge supercomputers and data centers and we build them fast. Currently, we’re building one on the Tennessee-Mississippi state line. As part of today’s commitment, we will take extensive additional steps to continue to reduce the costs of electricity for our neighbors… 

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“xAI will therefore commit to develop 1.2 GW of power as our supercomputer’s primary power source. That will be for every additional data center as well. We will expand what is already the largest global Megapack power installation in the world,” Shotwell said.

She added that the system would provide significant backup power capacity.

“The installation will provide enough backup power to power the city of Memphis, and more than sufficient energy to power the town of Southaven, Mississippi where the data center resides. We will build new substations and invest in electrical infrastructure to provide stability to the area’s grid.”

Shotwell also noted that xAI will be supporting the area’s water supply as well. 

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“We haven’t talked about it yet, but this is actually quite important. We will build state-of-the-art water recycling plants that will protect approximately 4.7 billion gallons of water from the Memphis aquifer each year. And we will employ thousands of American workers from around the city of Memphis on both sides of the TN-MS border,” she noted. 

The Ratepayer Protection Pledge was introduced as part of the federal government’s effort to address concerns about rising electricity costs tied to large AI data centers, as noted in an Insider report. Under the agreement, companies developing major AI infrastructure projects committed to covering their own power generation needs and avoiding additional costs for local ratepayers.

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