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Tesla could be using a “4416” battery cell in Model 3 and next-gen S, X fleet
Just days before Tesla releases official details for Model 3, including battery pack sizes and their respective driving range, a new rumor has emerged pointing to a new “4416” lithium ion battery cell being produced by the Silicon Valley-based electric car maker.
The news comes to us from Ben Sullins at Teslanomics who received an insider tip that Tesla has produced a significantly larger cylindrical battery cell that’s roughly 44mm in diameter and 160mm in height, also known as a 44160 cell, and currently being used in the Model 3 battery pack. The new information goes against previous speculation that Tesla will be using it’s newest high energy density 2170 cell in the Model 3. Tesla’s Gigafactory is currently producing 2170 cells for use in its commercial Powerwall and Powerpack battery storage systems.
We had previously reported that Model 3 will be available in a 60 kWh and 75 kWh battery pack option. Unlike Tesla’s flagship Model S and X which currently utilizes its traditional 18650 battery cell, packaged within 16 individual battery modules, Model 3 will utilize only 4 modules containing the much larger and higher energy density 44160 cell.
Though the new insider tip is highly speculative, a new cell design with higher energy density would validate Musk’s previous reveal that Model 3’s shorter wheelbase can only support up to a 75 kWh pack if used with Tesla’s current cell type. Musk also recently confirmed that their are no plans to use the 2170 cells in Model S and Model X vehicles.
The shorter wheelbase only allows for a 75 kWh pack in Model 3 at current cell/module energy densities
— Elon Musk (@elonmusk) March 24, 2017
A larger and more energy dense 44160 lithium ion cell would allow Tesla to presumably use less cells, lower battery pack weight, while achieving the same energy output. This would also explain why recent spy shots showing the battery meter on the Model 3 center display revealed that it was capable of over 300 miles of range from a 75 kWh pack. A lighter vehicle with a more energy dense battery pack means greater range.
Model 3’s assumed 310 mile driving range represents nearly a 20% increase over a Model S 75 which achieves 259 miles of range with a 75 kWh battery. Incidentally, Tesla confirmed that Model S 75 in rear wheel drive will be discontinued, fueling even more speculation that Tesla could be bringing 44160 cells to future Model S and Model X vehicles that are due for a refresh.
What do you think? Leave us your thoughts in our forum.
Updated: Tesla has confirmed the use of 2170 form factor cells in the Model 3
Check out today’s Monday Teslanomics Live News where Ben discusses his thoughts around the topic.
News
Tesla China extends its 7-year financing promotion once more
The move marks Tesla’s second extension of the program this year.
Tesla has extended its seven-year ultra-low-interest and five-year interest-free financing programs in China once more, pushing the offers through March 31, the end of the first quarter.
The move marks Tesla’s second extension of the program this year. The financing plan was first introduced on January 6 as a strategy aimed at offsetting higher ownership costs ahead of China’s planned 5% NEV purchase tax in 2026.
The original promotion was set to expire at the end of January but was extended to the end of February. This has now been extended again through March.
The repeated extensions reflect growing competitive pressure. Tesla’s 2025 retail sales in China totaled 625,698 units, representing a 4.78% year-on-year decline, as per data compiled by CNEV Post. That being said, this decline is partly caused by the Model Y’s changeover to its new variant in Q1 2025, which resulted in lower sales during the quarter.
In early 2026, the Model Y also lost its position as China’s top-selling EV in January to Xiaomi’s YU7, though this was also a month when Tesla primarily exported vehicles to foreign territories, which pushed local delivery numbers lower.
During January 2026, Tesla China exported 50,644 vehicles, roughly 1.7 times higher than the same month a year ago and more than 15 times higher than December’s level.
Tesla’s financing push has not gone unanswered. BYD this week introduced its own seven-year low-interest plan across its Ocean lineup and Fang Cheng Bao sub-brand, also valid through March 31. Other competitors including NIO, XPeng, Li Auto, and Geely Auto have already rolled out extended-term loan programs as well.
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Tesla China focuses on local deliveries as Q1 enters final month
Tesla’s estimated delivery times for all variants of the Model 3 and Model Y in China were listed at just one to three weeks.
Tesla’s delivery wait times in China have dropped to some of their shortest levels in years, an apparent hint that Giga Shanghai has largely cleared its order backlog and currently has strong production capacity.
As of February 26, estimated delivery times for all variants of the Model 3 and Model Y in China were listed at just one to three weeks, as per observations of Tesla China’s official webpages by CNEV Post.
That marks a notable shift from the several-week or even two-month waits seen late last year.
The one-to-three-week delivery window suggests that Giga Shanghai is likely focusing on the local market, at least for now as the company enters the final month of the first quarter. Tesla China typically spends the first half of the quarter catering to markets that import vehicles from Giga Shanghai.
Historically, when Tesla’s wait times in China compress to their shortest levels, the company often follows with fresh market actions.
In past cycles, shortened delivery timelines were followed by promotional activity. After delivery windows narrowed to one to three weeks in early 2024, for example, Tesla later introduced an RMB 10,000 instant discount on Model Y final payments that year.
To spur local demand, Tesla recently extended its seven-year ultra-low-interest and five-year interest-free financing offers through March 31. This marks the second extension of the policy this year.
So far, posts from the Tesla community suggest that interest in the company’s vehicles among consumers in China is still strong. Videos of busy delivery centers across China have been shared on social media.
China’s competitive EV landscape has evolved as of late. With regulators discouraging aggressive price wars, automakers are increasingly leaning on financing incentives instead of direct price cuts. Major players including BYD, NIO, XPeng, and Li Auto have introduced similar loan extensions and promotional financing packages.
Elon Musk
Elon Musk’s The Boring Company closes Tunnel Vision Challenge
The Tunnel Vision Challenge invited individuals, companies, and governments to propose a tunnel project up to one mile long.
Elon Musk’s The Boring Company has officially closed submissions for its Tunnel Vision Challenge, confirming that a total of 487 entries were received before the deadline.
In a post on X, the company wrote, “Tunnel Vision Challenge is closed! 487 entries received – TBC team is excited to go through them all!” The company added that “We will select the top ~15 in the next week, and reach out with follow-up questions,” and that an “overall winner will be announced on March 23.”
The Tunnel Vision Challenge invited individuals, companies, and governments to propose a tunnel project up to one mile long with a 12-foot inner diameter. The winning entry will have its tunnel constructed free of charge.
Submissions could range from Loop passenger tunnels to freight, pedestrian, utility, or water tunnels. The only requirement was that the project clearly demonstrate how tunneling would meaningfully improve transportation or infrastructure between two points.
Just days before the deadline, the company provided an interim update noting that 407 entries had already been received. “Update on the Tunnel Vision Challenge – 1 mile of free tunnel! With 3 days left to submit, 407 entries have been received. Great to see enthusiasm for tunnels!” The Boring Company wrote at the time on X. By the close of submissions, the total had grown closer to 500 entries, hinting at strong interest in underground transportation solutions.
Entries are being evaluated on usefulness, stakeholder engagement, and technical, economic, and regulatory feasibility. Applicants were required to quantify projected benefits, such as time saved per rider or cost savings per shipment, and provide maps showing proposed alignments and other details. Submissions that included geotechnical or subsurface data are expected to receive additional consideration.
The Boring Company will fund the tunnel’s construction itself, though related infrastructure costs may be discussed with the winning team. The company also retains discretion to modify or cancel the challenge.