A prominent European EV repair specialist is sounding the alarm on Tesla Model 3 and Model Y vehicles equipped with LG battery cells manufactured in China, claiming they are seeing “catastrophic” failure rates and significantly shorter lifespans compared to Panasonic packs.

For years, the narrative around Tesla’s move to Chinese battery suppliers has been generally positive, with the LFP (Lithium Iron Phosphate) packs from CATL proving to be extremely durable.

However, Tesla also sources Nickel Manganese Cobalt (NMC) cells from LG Energy Solution’s Nanjing facility for its Long Range and Performance models in Europe and parts of Asia.

Now, EV Clinic, a Croatia-based independent research and repair facility known for diving deep into battery diagnostics, has issued a severe warning regarding these specific LG NCM811 packs.

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According to the firm, data from its repair center suggests a stark difference in quality between Tesla’s two main higher-energy-density packs: the US-made Panasonic NCA packs and the Chinese-made LG NCM packs.

“We are raising serious concerns about Tesla Model 3/Y LG NCM811 battery packs (LGES Nanjing), which exhibit very high failure rates and significantly shorter lifespans compared to Panasonic NCA packs (Made in USA).”

The shop claims that while Panasonic packs are generally repairable and can last up to 250,000 miles before cell failure, the LG equivalents are approaching end-of-life at around 150,000 miles.

More concerning is the nature of the failure. EV Clinic states that in over 90% of the cases they see with LG packs, cell-level repair is “impossible.”

The issue appears to be widespread degradation across the modules rather than a single bad cell bringing down the pack. They found that LG cells often show extremely high internal resistance.

“A failing Panasonic cell hits roughly 28 mΩ, which is the measurement for LG cells when brand new… Out of 46 cells, it’s common to find 15 cells over 100 mΩ ACIR, and the remaining 30 cells above 50 mΩ ACIR.”

The lab shared an example from a Tesla battery module:

Because the degradation is so uniform and severe, replacing a single faulty module is described as “operationally unsustainable,” as the remaining weakened cells are likely to fail in a cascade shortly after.

The situation has become so problematic for the shop that they announced they are introducing a “feasibility fee” just to check if these specific packs can be repaired, noting that they are “losing over €20,000 each month” attempting to fix packs that are effectively dead.

At this moment, during ongoing experimental testing with real customers experiencing LG failures, we are losing over €20,000 per month in operational time while investigating whether LG’s Chinese NCM811 systems can be sustainably repaired. At this stage, we can confidently say: the cells are, to put it mildly, catastrophic. Panasonic has mostly single-cell failures at 250,000km, and it is repairable, whereas LG has multiple-cell failures.

Their advice to owners with failed LG packs? Swap it for a used Panasonic pack or go to Tesla for a full replacement.

Electrek’s Take

This is a pretty damning report from a shop that is well-respected in the aftermarket repair community for actually tearing these things apart and attempting to fix them rather than just swapping them out.

We know that Tesla has been diversifying its battery supply chain aggressively, and for the most part, it has worked out well. The CATL LFP packs are tanks, heavy, but durable. But the NCM chemistry is trickier, and if these findings from EV Clinic hold up across a larger sample size, it could be a headache for Tesla, especially in Europe, where many of the China-made NCM packs end up.

It’s worth noting that this applies specifically to the LG NCM811 packs from Nanjing. Many US Tesla owners have Panasonic packs, which this report actually praises as highly durable and repairable.

Thanksgiving may be over, and the official Black Friday date may have passed, but that doesn’t mean savings have slowed down any, with us now having shifted over into Cyber Monday sales. Many of the previous Black Friday Green Deals we spotted up until today are continuing – some ending tonight with the holiday, while others are continuing on through the rest of the week. If you didn’t jump on these deals last week, you still have time to score the best prices of the year across e-bikes, EVs, power stations, tools, eco-friendly appliances, and much more. We’ve thrown all the best deals into this one-stop shopping hub for all your greener needs and will continue updating it throughout the week. Head below to browse all the best Cyber Monday Green Deals while they last.

Cyber Monday EV Green Deals

• Lectric’s Black Friday/Cyber Monday Sale offers up to $893 bundles with e-bikes starting from $999
• Lectric launches Black Friday accessory flash sale with up to 40% discounts for add-on gear starting from $14
• Cash in during Lectric’s Black Friday battery sale with up to 30% off new and legacy models starting from $250
• Lectric’s XP4 e-bikes get best bundles of up to $514 in FREE gear for Black Friday starting from $999
• Upgrade off-road commutes and adventures with Lectric’s XPeak 2.0 e-bikes and up to $583 in FREE gear from $1,499
• Score $518 in FREE gear and commute up to 60 miles on Lectric’s XPress 750 long-range e-bike at $1,299
• MOD Bikes offers rare Black Friday/Cyber Monday e-bike discounts to lows starting from $1,799 (Up to $400 off)
• Tesla’s Universal Wall Connector with dual NACS + J1772 connectors and customizable 48A speeds retains $50 cut to $600
• Segway’s official Black Friday sale now live: Best price of the year on latest e-scooters, e-bikes, more starting from $150
• Segway’s feature-packed E3 Pro electric scooter with Apple Find My hits new $500 Black Friday low (Save $200)
• Rad Power expands Black Friday e-bike lineup and increases savings to new lows starting from $999
• Autel’s MaxiCharger AC Lite level 2 EV charger grants up to 50A speeds at new $398 Black Friday low (Save $171)
• Schumacher’s 12A level 1 portable EV charger is perfect for stowing in trunks at a $110 Black Friday low (Save $50)
• Aventon takes up to $400 off new e-bikes: Security-packed Pace 4 smart cruiser at new $1,599 low (Reg. $1,799)
• Aventon’s Level 3 smart commuter e-bike gets a first-time early Black Friday discount to $1,699 (Reg. $1,899)
• Hop on Aventon’s latest Aventure 3 all-terrain smart e-bike with first-time savings to $1,799 (Reg. $1,999)
• Save up to 41% on Navee’s smart e-scooters, like the flagship ST3 Pro at its second-ever $660 low, more from $315
• Heybike’s new-gen Ranger 3.0 Pro folding commuter e-bike gets first post-launch cut to $1,399 low for Black Friday
• Heybike drops new Mars 3.0 folding e-bike back to its $1,199 low during Black Friday sale for first time since launch
• Heybike increases Black Friday savings on its Hero 750W mid-drive all-terrain e-bike to a new $2,099 low, more
• Get up to 85 miles of pedal-assisted cargo carrying on Heybike’s dual-battery Hauler e-bike at a new $1,099 low (Reg. $1,899)
• Heybike is clearing stock of its Tyson uni-body folding e-bike with an $800 price cut to a new $999 low
• Velotric’s Black Friday Sale switches gears with up to $750 increased savings and new lows starting from $999
• Score up to 47% Black Friday savings on NIU EVs, like the 2025 KQi 200F e-scooter at its $529 low (Reg. $799), more from $279
• Leviton’s 48A level 2 smart hardwired EV charger falls to new $479 Black Friday low (Save $270), more from $400
• Tenways launches new Wayfarer e-bike with 85-mile range, Apple Find My, and $577 savings at $1,899
• Ride1Up’s early Black Friday Sale gives us first savings on the latest TrailRush German mid-drive e-bike at $1,995
• Get up to 53% Black Friday savings + bonus discounts on Hiboy e-scooters and e-bikes at lows starting from $150
• Gift the kids Hover-1’s Neo I Foldable Electric Scooter this Christmas, it’s only $105 for Black Friday (Reg. $280)

Cyber Monday Power Station Green Deals

• EcoFlow launches next Black Friday Sale phase with up to 80% off expanded lineup – starts from $149
• Score up to $13,289 exclusive Cyber Monday savings on EcoFlow’s DELTA Pro Ultra X power station + bundles, more from $174
• Save up to 67% on 2x EcoFlow DELTA 2 power stations at $698 low + three accessory bundles from $799 for Cyber Monday
• EcoFlow launches DELTA 3 1000 Air power station and bundles with up to $640 early-bird savings starting from $299
• EcoFlow’s newest 10,000mAh to 27,650mAh RAPID power banks with up to 53% Black Friday savings at new lows from $66
• Anker’s extended SOLIX Black Friday Sale increases power station savings up to 70% with new lows starting from $150
• Anker’s SOLIX C300X 90,000mAh portable power station + solar bundle option at new Black Friday lows from $160
• Anker’s popular PowerCore Reserve 192Wh power station with a pop-up light drops to $80 for Black Friday (Save $70)
• Get up to 54% exclusive savings on these Anker SOLIX F3800 units + EverFrost 2 cooler at new lows starting from $699
• Jackery’s Explorer 1000, 2000, 3000 V2 + 5000 Plus power stations are all hitting new Black Friday lows from $332
• Get a 256Wh LiFePO4 capacity in a 6.9-pound unit with Jackery’s Explorer 240D power station at a new $132 low (Reg. $209)
• Jackery’s Black Friday power station sale offers up to 65% discounts with bonus 5% + 7% savings starting from $79
• Bluetti’s Black Friday Sale takes up to 55% off power stations with exclusive bonus savings to new lows from $209
• Bluetti launches new Elite 400 ‘luggage’ power station with up to 53% exclusive savings starting from $1,409
• Pick up Bluetti’s new Pioneer Na(Sodium) power station + bundles at lowest prices with exclusive savings from $735
• Mango Power’s Black Friday Sale takes up to 75% off its lineup of Power E station/bundles + bonus savings – all starting from $1,099
• DJI’s 2,048Wh modular power station hits new $699 Black Friday low ($600+ off) + gimbals, cameras, more from $55
• Take the two-pound ALLPOWERS SOLAX P100 mini power station anywhere at a new $55 low (Reg. $89)
• Save up to 34% on ALLPOWERS’ new Volix P300 256Wh power station and bundles starting from $132

Cyber Monday Appliance and Device Green Deals

• Anker’s eufy solar security cameras, smart locks, more get up to 50% Black Friday savings to new lows starting from $50
• Autel’s new outdoor cams pack a punch with solar design, local storage, and HDMI with kits from $249 (Up to $245 off)
• Save thousands for Black Friday on Samsung smart washer/dryers, refrigerators, ovens, and more starting from $269
• GE’s 2-in-1 Profile smart ventless electric washer/dryer combo with heat pump at $2,000 (Reg. $2,700)
• Aiper’s Black Friday Sale offers up to 50% savings on robot pool cleaners, skimmers, monitors, more from $120
• AeroGarden’s 6-plant Harvest Elite 360 indoor hydroponic system hits new $62 Black Friday low, more from $29
• Jump car batteries with GOOLOO’s GP4000 or use as a 24,000mAh power bank with $60 Black Friday savings at a new $80 low
• Cross Whisker’s Litter-Robots off your shopping list with up to $152 Black Friday savings and lows from $599
• Govee’s indoor and outdoor ambient lighting devices hit new lows with up to 50% Black Friday savings from $24
• Save up to 49% on Govee’s smart appliances, like the electric kitchen composter at its $200 low ($103 off), more

Michael Burry, the investor made famous by The Big Short, is back to criticizing Tesla (TSLA). In a new article, Burry takes aim at the “tragic algebra” of stock-based compensation (SBC), which focused primarily on NVIDIA, but the famed investors also specifically highlight Tesla’s high dilution rate and argue that the company’s pivot to robotics is just the latest narrative shift to prop up a “ridiculously overvalued” stock.

Burry is an interesting character. A trained neurologist, he made an unlikely transition into investing in the 1990s, becoming a deep-value investor managing a hedge fund.

He became famous for being one of the first to recognize the impending US subprime crisis and for betting against it. Or more accurately, he became famous from being featured in Michael Lewis’s The Big Short book, which covered his role in uncovering the crisis, and the subsequent movie of the same name, in which Christian Bale played him.

Earlier this year, Burry shut down his hedge fund and returned money to investors, freeing him to discuss the AI bubble publicly. He recently launched a new Substack and quickly became one of the main thought-leaders breaking down the anatomy of the AI bubble.

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Burry has had a tumultuous relationship with Tesla stock over the years, famously holding a massive short position against the automaker in 2021 before eventually closing it. While he has been quiet on Tesla for a while, his latest newsletter focuses on how tech companies use stock-based compensation to obscure their real costs.

While the bulk of his analysis targets Nvidia, his main target in the AI bubble, he dedicates a specific section to Tesla, and the math he presents is worth looking at for shareholders.

The “Tragic Algebra” of Dilution

Burry’s main argument is that Wall Street and investors generally ignore stock-based compensation when calculating earnings, treating it as a non-cash expense. He argues this is a mistake because it permanently dilutes existing shareholders.

Along with one of his associates, Burry has developed a formula that calculates the real dilution from stock options for companies.

He singles out Tesla as a prime offender when it comes to diluting its investors without offering buybacks to offset it:

Tesla dilutes its shareholders at about 3.6% per year, with no buybacks. The chart above shows the kind of present value destruction that this level of dilution can impart.

For context, Burry compares this to Amazon, which dilutes at roughly 1.3%, and Palantir, which is higher at 4.6%.

The concern here is that while Tesla reports profitability, a significant portion of the value created is being transferred directly to employees and management in the form of new shares, rather than retained by the current equity holders.

The Musk Pay Package

We reported extensively on Elon Musk’s massive compensation packages. After a judge rescinded his original massive ~$55 billion package, shareholders voted to reinstate it, and it is now up to the Delaware Supreme Court to decide whether Tesla can still use it or if it must fall back on a new $29 billion package it already pre-approved.

On top of this already absurd situation, shareholders recently approved a new stock option package for Musk worth up to $1 trillion.

Burry sees this package not as a reward for performance, but as a guarantee of future value destruction for current holders:

“With recent news of Elon Musk’s $1 trillion dollar pay package, dilution is certain to continue. Tesla’s market capitalization is ridiculously overvalued today and has been for a good long time.”

The issuance of those shares creates a massive overhang on the existing float. On top of a stock that already trades at almost 300 times earnings.

“The Elon Cult” and the Pivot to Robots

Perhaps the most biting comment in Burry’s note is regarding the shifting narrative around Tesla.

For years, Tesla was valued as an automotive growth story. As vehicle deliveries growth stopped in 2024 and reversed in 2025, the narrative shifted heavily toward the Cybercab and Optimus.

Burry characterizes this shifting focus as a way to keep the “cult” invested:

“[As an aside, the Elon cult was all-in on electric cars until competition showed up, then all-in on autonomous driving until competition showed up, and now is all-in on robots – until competition shows up.]”

While some could argue that these moves were made as Tesla took advantage of new technologies, the timeline Burry is highlighting is technically correct.

Electrek’s Take

I have a lot of respect for Burry. His arguments are sound and well-researched. I have been enjoying his Substack over the last few weeks, and he makes some undeniably great points about the AI bubble.

That said, it doesn’t necessarily make any of it a good short.

As John Maynard Keynes famously said, “the market can stay irrational longer than you can remain solvent.”

Tesla’s stock is undoubtedly irrational. A company with falling earnings trading at a P/E of 295 is absolutely insane.

Even rapidly growing tech companies run into problems when their price-to-earnings ratio hits 50. Tesla’s stock would have to crash ~80% or its earnings would have to increase by ~6x just to trade at a 50 P/E. And again, its earnings have been steadily declining for the past 2 years.

But it is being traded by irrational people who, as Burry pointed out, have a cult-like mentality toward Musk. That’s a recipe for disaster.