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Watch as duo slices open Tesla Model S battery cell to see what’s inside [Video]

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YouTube channel What’s Inside purchased a Tesla Model S battery module and completely destroyed it to … well, take a look at what’s inside.

The father-son duo ordered a Tesla battery module off of eBay for the test which included a puncture test by arrow, an throw-off-the-roof test, and an over-the-top ax-a-battery-cell-in-half test. The lithium ion cells in the battery module are the popular 18650 cells used by Tesla since the original Roadster and in today’s Model S and Model X  vehicles.

What’s Inside put the batteries to the test, initially expecting the battery to catch fire or blow up. After puncturing the battery module by shooting an arrow into it, they decided to throw the module off the roof. The battery module began “sizzling” after being thrown off the roof, before separating and exposing the cooling infrastructure of the battery after a second toss.

However, both tests proved to be uneventful as no fires or explosions happened. The duo then took it to the next level by slicing in half an individual 18650 battery cell using an ax.

Tesla 18650 lithium ion cell cut in half by an ax. Photo: What’s Inside

What’s Inside noted that Tesla’s battery cooling system is “weaved” throughout the module, allowing it to cool each cell individually. Each module also has it’s own computer system to measure cell-level energy levels and temperatures. After they sliced open an 18650 cell, battery acid began bubbling and spilling from the cell. While they were expecting the cells to catch fire or explode, we are happy to see that Tesla’s cells stood up to the brutal tests.

Watch the full video here:

Christian Prenzler is currently the VP of Business Development at Teslarati, leading strategic partnerships, content development, email newsletters, and subscription programs. Additionally, Christian thoroughly enjoys investigating pivotal moments in the emerging mobility sector and sharing these stories with Teslarati's readers. He has been closely following and writing on Tesla and disruptive technology for over seven years. You can contact Christian here: christian@teslarati.com

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Tesla China rolls out Model 3 insurance subsidy through February

Eligible customers purchasing a Model 3 by February 28 can receive an insurance subsidy worth RMB 8,000 (about $1,150).

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Credit: Tesla Malaysia/X

Tesla has rolled out a new insurance subsidy for Model 3 buyers in China, adding another incentive as the automaker steps up promotions in the world’s largest electric vehicle market.

Eligible customers purchasing a Model 3 by February 28 can receive an insurance subsidy worth RMB 8,000 (about $1,150).

A limited-time subsidy

The insurance subsidy, which was announced by Tesla China on Weibo, applies to the Model 3 RWD, Long Range RWD, and Long Range AWD variants. Tesla stated that the offer is available to buyers who complete their purchase on or before February 28, as noted in a CNEV Post report. The starting prices for these variants are RMB 235,500, RMB 259,500, and RMB 285,500, respectively.

The Tesla Model 3 Performance, which starts at RMB 339,500, is excluded from the subsidy. The company has previously used insurance incentives at the beginning of the year to address softer seasonal demand in China’s auto market. The program is typically phased out as sales conditions stabilize over the year.

China’s electric vehicle market

The insurance subsidy followed Tesla’s launch of a 7-year low-interest financing plan in China on January 6, which is aimed at improving vehicle affordability amid changing policy conditions. After Tesla introduced the financing program, several automakers, such as Xiaomi, Li Auto, Xpeng, and Voyah, introduced similar long-term financing options.

China’s electric vehicle market has faced additional headwinds entering 2026. Buyers of new energy vehicles are now subject to a 5% purchase tax, compared with the previous full exemption. At the same time, vehicle trade-in subsidies in several cities are expected to expire in mid-November.

Tesla’s overall sales in China declined in 2025, with deliveries totaling 625,698 vehicles, down 4.78% year-over-year. Model 3 deliveries increased 13.33% to 200,361 units, while Model Y deliveries, which were hampered by the changeover to the new Model Y in the first quarter, fell 11.45% to 425,337 units.

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Tesla hiring Body Fit Technicians for Cybercab’s end of line

As per Tesla’s Careers website, Body Fit Technicians for the Cybercab focus on precision body fitment work, including alignment, gap and flush adjustments.

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Credit: Tesla/X

Tesla has posted job openings for Body Fit Technicians for the Cybercab’s end-of-line assembly, an apparent indication that preparations for the vehicle’s initial production are accelerating at Giga Texas. 

Body Fit Technicians for Cybercab line

As per Tesla’s Careers website, Body Fit Technicians for the Cybercab focus on precision body fitment work, including alignment, gap and flush adjustments, and certification of body assemblies to specification standards. 

Employees selected for the role will collaborate with engineering and quality teams to diagnose and correct fitment and performance issues and handle detailed inspections, among other tasks.

The listing noted that candidates should be experienced with automotive body fit techniques and comfortable with physically demanding tasks such as lifting, bending, walking, and using both hand and power tools. The position is based in Austin, Texas, where Tesla’s main Cybercab production infrastructure is being built.

Cybercab poised for April production

Tesla CEO Elon Musk recently reiterated that the Cybercab is still expected to start initial production this coming April. So far, numerous Cybercab test units have been spotted across the United States, and recent posts from the official Tesla Robotaxi account have revealed that winter tests in Alaska for the autonomous two-seater are underway. 

While April has been confirmed as the date for the Cybercab’s initial production, Elon Musk has also set expectations about the vehicle’s volumes in its initial months. As per the CEO, the Cybercab’s production will follow a typical S-curve, which means that early production rates for the vehicle will be very limited. 

“Initial production is always very slow and follows an S-curve. The speed of production ramp is inversely proportionate to how many new parts and steps there are. For Cybercab and Optimus, almost everything is new, so the early production rate will be agonizingly slow, but eventually end up being insanely fast,” Musk wrote in a post on X.

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Swedish unions consider police report over Tesla Megapack Supercharger

The Tesla Megapack Supercharger opened shortly before Christmas in Arlandastad, outside Stockholm.

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Credit: Tesla Charging/X

Swedish labor unions are considering whether to file a police report related to a newly opened Tesla Megapack Supercharger near Stockholm, citing questions about how electricity is supplied to the site. The matter has also been referred to Sweden’s energy regulator.

Tesla Megapack Supercharger

The Tesla Megapack Supercharger opened shortly before Christmas in Arlandastad, outside Stockholm. Unlike traditional charging stations, the site is powered by an on-site Megapack battery rather than a direct grid connection. Typical grid connections for Tesla charging sites in Sweden have seen challenges for nearly two years due to union blockades.

Swedish labor union IF Metall has submitted a report to the Energy Market Inspectorate, asking the authority to assess whether electricity supplied to the battery system meets regulatory requirements, as noted in a report from Dagens Arbete (DA). The Tesla Megapack on the site is charged using electricity supplied by a local company, though the specific provider has not been publicly identified.

Peter Lydell, an ombudsman at IF Metall, issued a comment about the Tesla Megapack Supercharger. “The legislation states that only companies that engage in electricity trading may supply electricity to other parties. You may not supply electricity without a permit, then you are engaging in illegal electricity trading. That is why we have reported this… This is about a company that helps Tesla circumvent the conflict measures that exist. It is clear that it is troublesome and it can also have consequences,” Lydell said.

Police report under consideration

The Swedish Electricians’ Association has also examined the Tesla Megapack Supercharger and documented its power setup. As per materials submitted to the Energy Market Inspectorate, electrical cables were reportedly routed from a property located approximately 500 meters from the charging site.

Tomas Jansson, ombudsman and deputy head of negotiations at the Swedish Electricians’ Association, stated that the union was assessing whether to file a police report related to the Tesla Megapack Supercharger. He also confirmed that the electricians’ union was coordinating with IF Metall about the matter. “We have a close collaboration with IF Metall, and we are currently investigating this. We support IF Metall in their fight for fair conditions at Tesla,” Jansson said.

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