

News
Dissecting Tesla Model 3’s 2170 lithium ion battery cell, what’s inside?
A teardown video featuring Tesla Model 3’s 2170 lithium-ion battery cell was recently uploaded on YouTube, showing the components of the cylindrical cell and how it stacks up against the Model S and Model X’s 18650 battery cell.
Aries RC, a channel dedicated to battery improvements in the remote control aircraft market, indicated that they acquired a 2170 lithium-ion cell from Tesla’s Gigafactory in Nevada. The host noted that the first thing he did was to connect the battery to a resistor, in order to completely drain the cell. Next, he made a cut at the positive terminal of the battery unit to expose a plastic dielectric barrier on the cell. This barrier is utilized by Tesla as a means to prevent the jelly roll inside from physically touching the top of the battery, which would cause a short circuit. As noted by the YouTube channel’s host, the negative terminal of the 2170 lithium-ion cell also features a similar dielectric barrier.
The Model 3’s 2170 cell features a thin layer of insulation on its interior, which, according to the RC enthusiast, is an outer layer of material that protects the cell wall’s integrity during a thermal runaway. In instances when the lithium-ion cell does heat up, however, Tesla has implemented a safety system in the form of three small cooling holes at the top of the battery. These small holes are about 0.5 mm wide, and are designed to vent out gases when the cell reaches high temperatures.
The jelly roll of the 2170 battery is wrapped in a copper sheet, which acts as a ground for the battery. A grounding strip is also attached to the copper strip using tap welding, which, according to the YouTube channel’s host, is particularly impressive, since tap welding is notoriously difficult to accomplish on thin pieces of metal.
The jelly roll of the Model 3’s battery cell features a lithium-nickel-cobalt-aluminum oxide that’s responsible for storing energy in the battery. Fully unrolled, the strip fitted with the compound measured roughly 32 inches long, roughly a third longer than the strip in Tesla’s 18650 battery, which is roughly 24 inches long.
RELATED: Watch this Tesla Model S battery teardown performed by veteran EV modders
As could be seen in a side-by-side comparison of the jelly rolls of the 2170 and 18650 cells, Tesla’s newest form factor 2170 cell features a roll that is significantly longer and thicker than the latter. Overall, the YouTube host suggested that Tesla seems to be accurate in its estimates that the 2170 cell carries roughly 30 percent more charge than the 18650 lithium-ion cell in the Model S and X.
Tesla uses thousands of 2170 cells to enable its mass market Long Range Model 3 to travel up to 310 miles on a single charge. Produced in partnership with Panasonic at the Nevada Gigafactory, Tesla’s 2170 lithium-ion battery modules proved to be one of the sources of the Model 3’s production bottlenecks last year. As revealed by recent building permits, however, Tesla is currently conducting large-scale improvements to the Gigafactory, aimed at automating its battery module production line.
Apart from the Model 3, Tesla also uses its 2170 lithium-ion cell for its Powerpack and Powerwall battery solutions. As confirmed by Tesla CEO Elon Musk through Twitter, however, the 2170 cells will not be making their way to the Model S and X, at least as of writing.
Elon Musk
Tesla called ‘biggest meme stock we’ve ever seen’ by Yale associate dean

Tesla (NASDAQ: TSLA) is being called “the biggest meme stock we’ve ever seen” by Yale School of Management Senior Associate Dean Jeff Sonnenfeld, who made the comments in a recent interview with CNBC.
Sonnenfeld’s comments echo those of many of the company’s skeptics, who argue that its price-to-earnings ratio is far too high when compared to other companies also in the tech industry. Tesla is often compared to companies like Apple, Nvidia, and Microsoft when these types of discussions come up.
Fundamentally, yes, Tesla does trade at a P/E level that is significantly above that of any comparable company.
However, it is worth mentioning that Tesla is not traded like a typical company, either.
Here’s what Sonnenfeld said regarding Tesla:
“This is the biggest meme stock we’ve ever seen. Even at its peak, Amazon was nowhere near this level. The PE on this, well above 200, is just crazy. When you’ve got stocks like Nvidia, the price-earnings ratio is around 25 or 30, and Apple is maybe 35 or 36, Microsoft around the same. I mean, this is way out of line to be at a 220 PE. It’s crazy, and they’ve, I think, put a little too much emphasis on the magic wand of Musk.”
Many analysts have admitted in the past that they believe Tesla is an untraditional stock in the sense that many analysts trade it based on narrative and not fundamentals. Ryan Brinkman of J.P. Morgan once said:
“Tesla shares continue to strike us as having become completely divorced from the fundamentals.”
Dan Nathan, another notorious skeptic of Tesla shares, recently turned bullish on the stock because of “technicals and sentiment.” He said just last week:
“I think from a trading perspective, it looks very interesting.”
Nathan said Tesla shares show signs of strength moving forward, including holding its 200-day moving average and holding against current resistance levels.
Sonnenfeld’s synopsis of Tesla shares points out that there might be “a little too much emphasis on the magic wand of Musk.”
Elon Musk just bought $1 billion in Tesla stock, his biggest purchase ever
This could refer to different things: perhaps his recent $1 billion stock buy, which sent the stock skyrocketing, or the fact that many Tesla investors are fans and owners who do not buy and sell on numbers, but rather on news that Musk might report himself.
Tesla is trading around $423.76 at the time of publication, as of 3:25 p.m. on the East Coast.
News
Tesla makes big change to Full Self-Driving doghouse that drivers will like
Now, it is changing the timeframe of which strikes will be removed, cutting it in half. The strikes will be removed every 3.5 days, as long as no strikes are received during the time period.

Tesla is making a big change to its Full Self-Driving doghouse that drivers will like.
The doghouse is a hypothetical term used to describe the penalty period that Tesla applies to drivers who receive too many infractions related to distracted driving.
Previously, Tesla implemented a seven-day ban on the use of Full Self-Driving for those who received five strikes in a vehicle equipped with a cabin camera and three strikes for those without a cabin camera.
It also forgave one strike per week of Full Self-Driving use, provided the driver did not receive any additional strikes during the seven-day period.
Now, it is changing the timeframe of which strikes will be removed, cutting it in half. The strikes will be removed every 3.5 days, as long as no strikes are received during the time period.
The change was found by Not a Tesla App, which noticed the adjustment in the Owner’s Manual for the 2025.32 Software Update.
The system undoubtedly helps improve safety as it helps keep drivers honest. However, there are definitely workarounds, which people are using and promoting for monetary gain, and you can find them on basically any online marketplace, including TikTok shop and Amazon:
🚨 Seeing more and more devices like this land on various online marketplaces including TikTok shop and Amazon
These devices are NOT to be used when operating Tesla Full Self-Driving and I’d love to see Tesla take action here.
These “creators” looking to make a quick buck are… pic.twitter.com/VnY25k2mPL
— TESLARATI (@Teslarati) September 17, 2025
People are marketing the product as an FSD cheat device, which the cabin-facing camera will not be able to detect, allowing you to watch something on a phone or look through the windshield at the road.
The safeguards implemented by Tesla are designed to protect drivers from distractions and also protect the company itself from liability. People are still using Full Self-Driving as if it were a fully autonomous product, and it is not.
Tesla even says that the driver must pay attention and be ready to take over in any scenario:
“Yes. Autopilot is a driver assistance system that is intended to be used only with a fully attentive driver. It does not turn a Tesla into a fully autonomous vehicle.
Before enabling Autopilot, you must agree to “keep your hands on the steering wheel at all times” and to always “maintain control and responsibility for your vehicle.” Once engaged, Autopilot will also deliver an escalating series of visual and audio warnings, reminding you to place your hands on the wheel if insufficient torque is applied or your vehicle otherwise detects you may not be attentive enough to the road ahead. If you repeatedly ignore these warnings, you will be locked out from using Autopilot during that trip.
You can override any of Autopilot’s features at any time by steering or applying the accelerator at any time.”
It is good that Tesla is rewarding those who learn from their mistakes with this shorter timeframe to lose the strikes. It won’t be needed forever, though, as eventually, the company will solve autonomy. The question is: when?
Elon Musk
Elon Musk teases the capabilities of the Tesla Roadster once again

Elon Musk has once again teased the capabilities of the Tesla Roadster, fueling the anticipation that many have for the vehicle, despite it still having no public production or delivery date.
The Roadster is among the most anticipated vehicles in the automotive sector currently, and as Tesla has teased its capabilities, from a lightning-fast 1.1-second 0-60 MPH acceleration to potential hovering with cold-gas thrusters, people are eager to see it.
Although the design seemed to be finalized, there was still more work to be done. Earlier this year, as Tesla was showcasing some of the Roadster’s capabilities to Musk, he stated that it was capable of even more.
This pushed back its production date even further, much to the chagrin of those who have been waiting years for it.
Musk continues to tease us all, and as we sit here waiting hopelessly for it to be revealed, he said today that it is “something special beyond a car.”
The new Roadster is something special beyond a car
— Elon Musk (@elonmusk) September 17, 2025
Musk’s words were in response to a video posted by Tesla China, showing the Roadster in a new promotional video created by a fan.
The Roadster was planned to be released in 2020, but here we are in 2025, and there is still no sign of the vehicle entering production. However, Tesla did say earlier this year that it would host a demo event for the Roadster, where the company would showcase its capabilities.
Lars Moravy said earlier this year:
“Roadster is definitely in development. We did talk about it last Sunday night. We are gearing up for a super cool demo. It’s going to be mind-blowing; We showed Elon some cool demos last week of the tech we’ve been working on, and he got a little excited.”
Tesla exec gives big update on Roadster, confirming recent rumor
The delays have been attributed to “radically increased design goals” for the vehicle, which have, without a doubt, improved its capabilities, but at the same time, we just want to know if it’s ever going to come.
Tesla can always make it “better,” but at what point do you say, “Okay, it’s time to show this thing off.” They could always build another, even more capable supercar in the next ten years.
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