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Tesla on track to increase battery energy density by 20%, reveals Panasonic executive
Tesla’s 2170 battery cells will increase in energy density by 20% in five years, the head of Panasonic’s U.S. EV battery business said. Panasonic supplies Tesla with the cells for its mass-market Model 3, which was manufactured for the first time in 2017.
Additionally, Panasonic will work to commercialize a cobalt-free version of its batteries for Tesla “in two to three years.” Cobalt-free cells would increase the positive environmental impact of driving an electric vehicle. One of Tesla’s main goals is to phase away from cobalt batteries, which is a controversial but crucial element to EV batteries.
The move from Panasonic is unprecedented and marks the first time a cell manufacturer that provides Tesla with batteries has put definitive future targets that will ensure the company stays ahead of its competitors for years to come. Reuters initially reported the findings.
Panasonic initially manufactured the 2170 lithium-ion battery cells for the Model 3. The cells are comprised of a nickel-cobalt-aluminum, or NCA, cathode chemistry, which has extremely high energy density.
High energy density means that vehicles can have increased range per charge. But their small size allows for increased spaciousness and lighter cars. Battery packs in electric vehicles tend to make up a majority of the car’s weight.
However, the company’s intention to have a cobalt-free EV battery cell within the next two to three years would revolutionize the way cars can operate. Cobalt, while useful and crucial for element stability in EV batteries, is highly controversial because of mining practices. In the Democratic Republic of Congo, it is highly reported that many of the miners are children.
This creates issues for companies that wish to remain ethical, but require the element because it is highly-functional in batteries.
Tesla has long maintained that it uses a series of due diligence practices to ensure that the cobalt it obtains is mined responsibly. In the company’s 2019 Environmental Impact Report, it stated that “Tesla is committed to making working conditions in our supply chain safe and humane, ensuring that workers are treated with respect and dignity, and that manufacturing processes are environmentally responsible.”
Eliminating cobalt from batteries would also increase the cost-effectiveness of the manufacturing process and would decrease the cost of Tesla’s vehicles.
Panasonic has been working on cutting cobalt content in its batteries to under 5% in the NCA cathode. It also plans to continue improving the battery cells in stages, according to Yasuaki Takamoto, who is Panasonic’s U.S. EV battery chief.
At the Tesla Gigafactory in Sparks, Nevada, Panasonic will begin converting lines at the factory to boost cell energy density.
Tesla will unveil developments in the company’s battery cells on September 22 at the company’s Battery Day.
Tesla has worked diligently with battery manufacturers to develop cells that will increase efficiency and decrease environmental impact. Additionally, the company has rolled out several updates that work to increase the efficiency of its vehicles. Most recently, the company’s Model Y received an update that deactivated the passenger side air vents when the seat is not occupied, which will make small efficiency changes.
Should add a few miles of range, more in slow traffic
— Elon Musk (@elonmusk) July 29, 2020
A Tesla Semi was involved in a fatal collision on U.S. Highway 50 in Dayton, Nevada, on Sunday, June 28, 2026, marking the first known fatal crash involving the electric Class 8 truck. The incident occurred around 7:20 a.m. at the intersection with Traditions Parkway, approximately 40 miles east of Reno and close to Tesla’s Gigafactory Nevada.
According to the Lyon County Sheriff’s Office and the Nevada State Police Highway Patrol, a semi-truck struck two passenger vehicles stopped at a traffic signal. The truck hit the vehicles from behind. Two people were pronounced dead at the scene, and a third person suffered life-threatening injuries and was flown to a hospital, Forbes reported.
Preliminary statements gathered at the scene by the Lyon County Sheriff’s Office suggested the truck driver may have fallen asleep at the wheel. However, the Nevada Highway Patrol, which is leading the investigation, stated that the official cause has not yet been determined.
Additional information is expected to be released early the following week. The truck was seized for evidence as part of the ongoing probe.
Responders at the scene included deputies from the Lyon County Sheriff’s Office, personnel from the Nevada Highway Patrol, Central Lyon County Fire Department, and the Nevada Department of Transportation. The crash led to the temporary closure of U.S. 50 in both directions.
The Tesla Semi is Tesla’s battery-electric heavy-duty truck, produced at the nearby Gigafactory in Nevada. Authorities initially described the vehicle as a semi-truck; its make was subsequently confirmed through reporting and scene identification; an interesting bit of information here, as the Semi is not yet available publicly and many do not know that Tesla builds electric trucks.
The investigation remains active, with no further official details on contributing factors or vehicle systems released as of early July 2026.
This incident highlights ongoing scrutiny of commercial vehicle safety on Nevada highways, particularly involving fatigue. Law enforcement continues to gather evidence and witness statements.
Tesla has expanded its Robotaxi program to Miami, Florida, marking the third state the autonomous ride-hailing platform has made its way to since launching last Summer.
Tesla announced today that the Robotaxi suite would now officially launch rides in a geofence in Miami:
🚨 Tesla’s “Long Weekend” continues with a HUGE announcement regarding Robotaxi!
It’s now in Miami!
Miami joins Austin, Dallas, Houston, and the Bay Area! https://t.co/ujjYjJT3Im pic.twitter.com/yPe1ZdSQIE
— TESLARATI (@Teslarati) July 3, 2026
The first geofence in Miami covers approximately 10 to 14 square miles. The area appears to be focused on western and central Miami, including Miami International Airport (MIA). It also includes popular routes like SR 826 (Palmetto Expressway), US 41 (Tamiami Trail), and connectors such as SR 968, 953, 959, and 972.
This is Tesla’s initial Miami launch zone, smaller and more targeted than some competitors’ areas (for example, Waymo’s initial rollout was broader in eastern neighborhoods). It prioritizes high-traffic, airport-linked routes before wider expansion.
The expansion is a huge signal for Tesla that it is now operating in Florida, a heavy-traffic state with many tourist areas, including Fort Lauderdale, Palm Beach, and the Boynton area, all of which are coastal and will attract perhaps millions of tourists in any given year.
¿Qué lo que Miami?
Robotaxi now available in Miami pic.twitter.com/P1m283seZU
— Tesla Robotaxi (@robotaxi) July 3, 2026
The Tesla Robotaxi network launched last year on June 22, in Austin, Texas, beginning limited commercial operations in that city. It expanded shortly thereafter into the San Francisco Bay Area of California in late July 2025, marking entry into a second state with service covering key areas such as San Francisco, San Jose, and Berkeley.
Full commercial service was achieved in Austin by November 18, 2025, strengthening its presence within Texas before further growth.
In 2026, the network continued expanding across Texas with the addition of Dallas and Houston on April 18, significantly broadening its footprint in the state. This new launch into Miami marks Tesla entering a new state and bringing active locations to include Austin, Dallas, Houston, San Antonio in Texas, and the Bay Area in California.
These sequential expansions have steadily increased the network’s reach across major metropolitan areas in Texas, California, and Florida, focusing on scaling operations city by city and state by state since the initial Austin debut.
Tesla CEO Elon Musk has tempered expectations for the company’s humanoid robot Optimus, emphasizing that initial production will ramp up slowly despite recent progress on the manufacturing line. In a July 1 reply on X, Musk responded to optimistic community speculation by stating, “No, Optimus production will be extremely slow at first, as everything is new. This is not like making a car.”
No, Optimus production will be extremely slow at first, as everything is new. This is not like making a car.
— Elon Musk (@elonmusk) July 1, 2026
The comment came in response to a post theorizing that Tesla had accelerated Optimus V3 development and might soon unveil an impressive demonstration with multiple units already in meaningful production. Musk’s clarification highlights the fundamental differences between scaling a novel humanoid robot and Tesla’s established automotive operations, which benefit from over a century of refined supply chains, tooling, and processes.
Recent updates show tangible advancement. Musk shared a photo of himself walking the Optimus production line at Fremont, where Tesla is converting former Model S/X manufacturing space. According to Q1 2026 earnings commentary, limited production is slated to begin in late July or August 2026 on this converted line.
Tesla Optimus project fires up as Musk sees production line progress
Musk previously noted that Optimus features roughly 10,000 unique parts, making early output rates “literally impossible to predict” and describing them as “quite slow.” A larger dedicated factory at Giga Texas is under construction, targeting higher-volume production around summer 2027 with long-term annual capacity potentially reaching millions of units.
Some experts point out that pioneering humanoid robotics demands inventing new automation techniques, actuator supply chains, and quality-control standards in real time. Unlike vehicles, where components and assembly methods are mature, every element of Optimus—from dexterous hands to AI-integrated movement—requires fresh engineering solutions. Early units are expected to handle simple factory tasks before expanding to more complex roles.
This cautious approach aligns with Tesla’s history of under-promising and over-delivering on complex technologies. While enthusiasts hoped for rapid deployment, Musk’s message underscores a deliberate strategy: prioritize reliability and iterative improvement over rushed volume.
Analysts suggest the S-curve ramp typical of new manufacturing will eventually accelerate once foundational issues are resolved, positioning Optimus as a potential trillion-dollar product line.
Musk has long envisioned Optimus transforming labor markets, assisting in homes, factories, and hazardous environments. By setting realistic timelines, Tesla aims to build sustainable momentum rather than risk disappointment. As the Fremont line comes online this summer, investors and fans will watch closely for the first production metrics and capability demonstrations.
Tesla Semi involved in first known fatal crash in Nevada
Tesla expands Robotaxi to Florida, marking its third state for autonomy
