News
Tesla Semi truck’s battery pack and overall weight explored
The big question on everyone’s mind–at least on the minds of those who understand the freight transportation industry–is how much the Tesla Semi might weigh. If Tesla’s all-electric semi truck is to be competitive at all, it must be capable of carrying the same loads as current-use semi-trucks in the Class 8 field do.
A big point of contention from nay-sayers and those in the trucking industry who understand logistics was the lack of announcement of the Tesla Semi’s actual weight. Plenty of press was given to the much-touted “80,000-pound capacity” number bandied around by CEO Elon Musk during the truck’s unveiling late last year. That number, however, refers only to the gross vehicle weight (GVW) of the Tesla Semi and is, in fact, exactly the same number used by every Class 8 truck on the road. They’re called Class 8s, in fact, because the 8 refers to that 80,000-pound total vehicle capacity.
What wasn’t given by Tesla was the gross vehicle tare weight (GVTW) of the Semi. This is a far more important number. Where the GVW gives the total capacity of the truck in terms of how much its freight plus the truck itself can weigh, the GVTW gives just the weight of the truck, sans trailer and freight. This number tells logistics experts how much actual freight and trailer the truck can haul legally.
For example, a typical “day cab” configuration 18-wheeler with a diesel engine weighs roughly 32,000 pounds with a relatively lightweight box trailer attached and full fuel tanks. That leaves about 48,000 pounds of freight capacity for the truck. That’s important because, although the truck won’t be loaded to capacity every time, it will be expected to be capable of carrying up to about that weight. Most big rigs on the road are capable of hauling 44,000 or more pounds worth of freight, depending on configuration and trailer type.
Having experience with driving commercial trucks in the past, once hauling a refrigerated trailer that had a freight capacity of 44,500 pounds, I learned that some industries count on freight capacity as part of their logistics costs and will literally fill a truck to its maximum in order to minimize those costs.
In logistics, weight and total freight capacity are highly important metrics in the overall scheme.
What We Know
Thinking about that, then, let’s look at what we know of the Tesla Semi and its potential weight. We know that the truck uses four independent electric motors that are derived from the Model 3, that it has an energy consumption of less than 2 kWh per mile, and that it can be charged to up to 400 miles in about half an hour. We also know that Elon promised 300 to 500 miles of range in total. On that latter point, it’s pretty clear that a “lower range, cheaper option” will be offered as has been done with most of Tesla’s vehicles to-date. So we can assume a 300-mile version and a 500-mile version will be forthcoming for the Semi.
We also know that the Tesla Semi had eight ports in its charging plug array. We saw this at the unveil in some close-up photos.
It’s clear to us that even if the Tesla Semi isn’t to become a big player in the trucking industry, the idea behind it will change things forever.
What We Don’t Know
What we don’t know is whether Musk and Co have something up their sleeves for the batteries. Much of the speculation regarding the Tesla Semi has been in regards to Tesla Semi’s massive battery pack.
In actuality, having a huge battery breakthrough on a vehicle like the Tesla Semi would not necessarily be a good thing for business. If there is a huge breakthrough, then all bets are off and most of our speculation in this article is moot. That would, however, mean that the sales potential of the Semi would be far lower than it would be otherwise because one thing that logistics companies and fleet managers aren’t interested in are flashy new, breakthrough, and (most importantly) untested, unproven technologies.
To a fleet manager, those phrases mean “breaks often, expensive to fix” and the potential positives will be ignored because of that. No one who wants to keep a job as a fleet manager or logistics purchaser will gamble on something unproven. Like new battery technology for a truck whose primary cost will be in its batteries. Likewise, unless there is a clear benefit in some terms other than pure business (like marketing or potential tax breaks), no board of directors will risk shareholder wrath on new tech either.
Close-up look at Tesla Semi’s drivetrain from underneath
We can say, as a side note, that most of the orders that have been placed for the Tesla Semi thus far are from corporations and companies who are doing business in areas where the marketing bonanza and potential tax incentives for laying down those relatively low-cost deposits are immense. Most of the companies involved have already invested heavily (and very publicly) in alternative fuel options outside of Tesla over the past few years. We also note the timing of both the Tesla Semi’s announcement (and order-taking) and the before-2018 rush by potential customers to put in deposits.
We reiterate that our not knowing if Tesla has some kind of big battery breakthrough announcement is a big “if” in our analysis here.
What People Smarter Than Us Have Said
Some people who know more than we do about things like math and engineering science have crunched the numbers on the Tesla Semi’s battery potentials. Over at Engineering.com, John Ewbank broke the results down into layman format. Here’s the gist.
If the Tesla Semi uses 2 kWh to travel a mile, then a 500-mile range means 1,000 kWh of power. That is not the actual size of the battery, though, as the charging requirement would preclude a huge pack.
In order to get 400 miles in thirty minutes of charging, Ewbank notes, the charger would have to be 1.6MW to achieve the 800kWh of promised charge in only 30 minutes. Charging at that rate is not possible because the result would be arching in the pack, which would surely be akin to the next Boring Company Flamethrower meme when Semi trucks begin to explode in flames during charging as a regular event. So the charging has to be split up.
Tesla Semi Megacharger port could support 1 MW of power.
The answer is simple, of course, and may explain the strange layout of the eight-port charging hub shown on the Semi at its unveil: there are four battery packs.
Instead of one big pack, four smaller packs (one for each motor, even) are used and are thus charging separately from one another, but simultaneously. Based on Tesla Semi’s Megacharger port configuration, this would likely mean that four of them are positive sides and the other four are grounds. Allowing for a single, huge wire to be plugged into each. The controls for the charging system interface may be plugged in separately (perhaps the oval-shaped black thing to the side?).
What This Adds Up To
We add up that bit of information plus what we know about the truck and get an estimated weight. Using the current weight of a Tesla Model S battery pack at 540kg per 90 kWh, we can do some simple math to estimate the Semi’s batteries would weigh about 6,000 kg. We aren’t sure about the new battery weights for the upcoming battery updates, but we can assume a 10-15 percent reduction from several factors (storage density, improvements in chemistry, packaging lightening) without being too aggressive or overly optimistic. Going with the fifteen percent reduction, that 6,000 kg drops to 5,100 kg. That’s about 11,244 pounds.
A conventional tractor, as we’ve said, has a tare weight of around 32,000 pounds when fully fueled and with a lightweight box trailer in place. Remove the trailer and the truck itself is about 22,500 pounds. It’s difficult to then go to just the weight of the powertrain components and fuel, but they’re considerably less than 11,000 pounds in all.
Tesla Semi spotted doing a tire-shredding acceleration run down in the wild
Looking at the shipping weight for a crated engine and transmission for a Class 8 truck, we can see that they weigh about 8,000 pounds on average. Add in fuel and other components and another 1,500 pounds (at most) are put on the truck. We then assume that the rest of the truck (framing, braking systems, air compressor, etc) are about the same for the Tesla Semi in order for it to meet Class 8 standards. So we call those a wash.
That means that the Semi, under our estimates, is roughly two tons heavier than would be a standard day cab big truck in the Class 8 category. This means the Semi would be that much less capable in terms of freight hauling that’s offset by its unprecedented all-electric performance. That amount, however, is probably not enough to stop the primary buyers of a day cab truck like this from balking at a purchase. The weight difference alone would be repaid in potential fuel savings, tax incentives, green marketing, and maintenance costs.
The trouble will come with cost differences. If the ROI is not there, most logistics buyers won’t write any purchase orders. But at least we can say that as far as we can tell, the weight differences of the Tesla Semi alone aren’t going to be a huge bar against entry into the trucking industry.
Cybertruck
Tesla’s most delayed Cybertruck feature is finally here
Tesla finally links Cybertruck Powershare with Powerwall 3 for extended home backup after years overdue.
Tesla’s Cybertruck can now pair with a Powerwall 3 to keep a house running longer during an outage, a feature the company first promised when the truck launched in November 2023.
The official Cybertruck account posted the update on X Thursday: “Powerwall 3 & I can now power your house together. This extends your home backup by over 3 days, equivalent to 9 additional Powerwalls,” Cybertruck lead engineer Wes Morrill confirmed the rollout separately, calling it the first time a vehicle and a home battery have worked together this way. Powerwall 2 and Powerwall+ compatibility is still coming later this year, per both the Cybertruck account and Morrill.
Powerwall 3 & I can now power your house together⁰ ⁰This extends your home backup by over 3 days, equivalent to 9 additional Powerwalls pic.twitter.com/8G2twIm6AN
— Cybertruck (@cybertruck) September 10, 2026
Powershare itself is not new. Tesla enabled the version that lets Cybertruck power tools, appliances or another EV through its bed outlets when the truck launched in 2023. Home backup through a Powershare Gateway and Universal Wall Connector arrived in 2024, and Tesla extended that support to homes with solar the following year. What has been missing until now is Powershare working alongside an existing Powerwall, instead of functioning as a separate backup source competing for the same job.
The pairing matters because a single Powerwall home battery typically covers a home for about a day, less if usage is heavy or the outage stretches into a heat wave or freeze. A second Powerwall for more backup storage costs several thousand dollars installed. A Cybertruck instead uses a battery the owner already has, one large enough here to add roughly three more days of backup without mounting another unit or booking an installer visit. For households in wildfire, hurricane or winter storm regions where outages run past a day, that keeps the refrigerator and medical equipment running instead of shutting down.
The company told owners in October 2024 that Powerwall integration was coming sometime in 2025. That date passed, and in December 2025 Tesla pushed the target to mid-2026, with Morrill explaining at the time that two grid-forming devices need to negotiate which one manages a home during an outage, and that certifying the process across multiple generations of Powerwall took longer than expected.
For owners who bought Powershare hardware expecting it to work with whatever battery setup they already had, Thursday’s update closes a gap that has shown up repeatedly in owner complaints since Cybertruck deliveries began. Tesla has also rolled out a separate Powershare grid support program in Texas, letting Cybertrucks send power back to the grid during high demand events, so the truck’s role in a home’s energy setup keeps expanding even as individual pieces of it arrive later than promised.
I picked up my Tesla Model Y one year ago, on August 30, and for roughly a year, I have had this vehicle prove to me that any other carmaker’s product is ruined for me forever.
One year and over 16,000 miles later, the Tesla Model Y is easily the best car I’ve ever had. Of course, everyone always says that about the car they currently drive, but for the longest time, I truly believed some of the other cars I drove — my 1998 Volkswagen Jetta K2, or my 2008 Ford Escape Hybrid — would never be topped.
Most of this was due to nostalgia, but dependability also played a role.
My Tesla has taken over the number one spot. Everyone I talk to about my car always has a lot of questions, and they’re usually the same ones that someone else asked me: “Is it really so cheap to drive?” “How much does it cost to charge?” “Does it really drive itself?” “How long is the warranty on your battery?”
I never mind answering those questions because it is an opportunity to educate someone on EVs. There are a lot of things about EVs that I hear from people, and I can’t help but chuckle at times. However, I hope this review clears some of those things up, because I truly want everyone to know how great this vehicle really is.
My brand new ride! Thank you @tesla @elonmusk for building one badass car
Officially a battery boy pic.twitter.com/jzpMawmTZs
— Joey Klender (@KlenderJoey) August 30, 2025
How my Tesla has changed my life
I was in two car accidents in high school, and I was a passenger in both. I am very happy I went through those as a teenager, because if I didn’t, I think I’d probably be much less aware of the road, how other drivers are so unbelievably unaware of others, and how inconsiderate most drivers are.
I’ve always considered myself a good driver because I was always taught to be defensive. Because of those two accidents, I am a tad jumpy in passenger seats, even with people like my parents, who drove me around for 16 years before I got my Learner’s Permit. On a drive home from Florida to Pennsylvania with my Dad two years ago, he actually told me at one point to “stop being so jumpy.”
Truth is, I trust my Dad behind the wheel more than anyone. But the older I’ve gotten, the more I just prefer to drive myself.
That is, until I met my Tesla and Full Self-Driving. I still remember the first drive I took after taking delivery: I immediately typed in my Fiancèe’s (my wife in 30 days!!!) favorite lunch spot, picked up her favorite meal, and pulled into the hospital where she delivers babies. I can remember thinking after 15 minutes, “Okay, that’s enough for me; I’ll drive manually now.”
Over the next 2-3 weeks, that length of time slowly but steadily increased. Every passing week, I got a tad more comfortable with the car driving me. Now, I have had FSD log 75% of my 13,000 miles since v14. I barely drive my car manually, and that’s exactly how I like it.
My Tesla has changed the way I drive and how I choose to travel.
🚨 Guys this is why you all NEED to stay vigilant behind the wheel, even on Tesla Full Self-Driving
Human drivers are UNHINGED and have no idea what they’re doing anymore. This was a kid obviously younger than 20 years old with zero awareness.
First drive with v14.3.7 https://t.co/1vTbCMpCn8 pic.twitter.com/lz7KKEF6bj
— TESLARATI (@Teslarati) August 2, 2026
In the past, I was always one of those anxious drivers, overly concerned about the parking situation, never wanting to drive in cities, and avoiding anything that made me a little uncomfortable when on the road. FSD has changed that completely.
Took my Fiancè and her friends to the airport this morning and my Model Y chose to bring me through the Inner Harbor during the morning commute
At least I got to see some fun stuff on my way home
I handled the city driving manually, FSD took care of the rest pic.twitter.com/7wcswtTUB0
— Joey Klender (@KlenderJoey) September 18, 2025
It has made traveling fun, driving less stressful, and parking a non-issue. I truly love this car and what it has done for me and my driving anxiety.
Maintenance and Cost Savings
A buddy of mine who took delivery of a Model Y right after me, also his first EV, texted me yesterday and said, “When do I take this thing for service? I don’t even know what it needs.”
This year I have spent $67.41 on service for my car:
- Free Front Camera Housing Cleaning
- $65 for a Tire Rotation at home from Tesla (easily avoidable if I just would have gone to a tire place or did it myself, but it was less than 20 degrees outside and the Service Tech did it at 7 am while I was asleep)
- $2.41 on a jug of Windshield Washer Fluid at Sheetz with my reward points
No spark plugs, no oil changes, no anything. Combine it with what you save on charging at home, and my ownership experience overall has been relatively cheap. I pay no more than I did for my Bronco for the car payment (around $400 per month), and my insurance went up about $60, but within the first four months I was given a safe driving discount by my agent. This brought it to about a $40 increase.
Now let’s factor in what I’ve saved in gas for the year:
Writing my 1 year Model Y ownership review and here’s my charging states for the year. April is when I started charging at home. Crazy to think how much I would have saved on charging if I would have been doing that all along pic.twitter.com/cpuSNop63G
— TESLARATI (@Teslarati) September 10, 2026
According to my Charge Stats in the Tesla App, I’ve saved $836 over the course of the year by driving a Tesla over an ICE vehicle. If you look at the graph, you’ll notice my Supercharger utilization dropped significantly in April, which makes sense.
This is when I started charging at home. Those savings would likely be closer to $1,500 if I had been charging at home all along.
Real-World Range
I never reset any Trip on my Tesla when I bought it, so all of these efficiency stats are for the life of the vehicle thus far through 16,063 miles.
My Tesla has a lifetime average of 260.1 Wh/mi (watt-hours per mile), which equates to 3.84 mi/kWh (miles per kilowatt-hour). This is pretty average, and I know I could be more efficient, but I use climate control liberally (it’s always on, even if the windows are down), and I love to let FSD drive me around in Hurry Mode.
Even when I’m driving manually, it’s because I’m on a dry, windy road and I want to take advantage of the awesome suspension and damping that the Model offers. Driving that car on a back road with some twists is one of the most fun things to do.
To achieve really excellent range and efficiency ratings, you really have to be more conservative with some things, and those are sacrifices I’m personally not willing to make. I want the A/C or Heat on, and I occasionally will increase drag by driving with the windows down.
I prefer Hurry mode on FSD, and I’m willing to sacrifice a few miles of range for that certain style of driving.
Interior, Visibility, Accessories, and More
My Favorite Interior Ever
The Model Y interior, like every Tesla interior, is not for everyone. Personally, I was never a fan of the minimalistic approach prior to ownership. As ridiculous as it is, I liked a simple knob for adjusting the temperature and fan speed. Even so, to this day, it takes me longer to pull up the climate settings to adjust things in my Tesla than it ever did in cars with a million knobs and buttons.
I can’t tell you how many times my finger has missed the On/Off button on the climate screen in the Model Y because of dips, bumps, turns, and just normal movement during operation. Do I like the way things are controlled in my Tesla? Yes, of course. Plus, Grok is so integrated into the car now that I could truly never have to touch the screen again for anything other than starting Self-Driving.
🚨 Using Grok to control the cabin temperature and turn on headlights in 2026 Model Y on FSD v14.3.8 and 2026.26.6.5 pic.twitter.com/7clgQkGABk
— TESLARATI (@Teslarati) August 27, 2026
However, I still find that there are valid arguments for people who like knobs and buttons. As ugly as it might be to me now, I think it is a tad more intuitive because it’s much harder to miss and much easier to make a quick adjustment than with a touchscreen.
With that being said, the touchscreen is great. It is so responsive and is as good as using an iPhone. There is no delay like most automotive touchscreens, where it feels sort of clunky for 2026.
I love to watch TV and Movies or YouTube on it when I’m parked anywhere. My Fiancèe and I have made it a date night several times over the past year: we’ll pick a spot to eat, get it to go, and enjoy it in the car while watching something. It’s great in the Fall when the leaves are turning orange.
The interior is, overall, a great part of the car. It’s very easy to keep clean, and when it’s clean, it truly feels like you’re in a spacecraft. It is one of the coolest interiors out there, maybe not as luxurious as some high-end Mercedes-Benz or BMW models, but it has a clean and simple feel that is better than many cars in its weight class.
I will say I do miss the Textile seats of the Model Y Standard, but I do not miss them when I am hot. I would still take the Vegan Leather because of the ventilated seats.
Rear Window Visibility is Pointless
If you like a rear windshield, just be aware of the fact that the Model Y basically does not have one. It almost feels pointless to be there, and the Model Y L has something that is much more “standard” in terms of rear windshields in a crossover/SUV:
This is a drastic difference. https://t.co/wTdhitD5aA pic.twitter.com/z6hFs0Jkss
— TESLARATI (@Teslarati) July 30, 2026
It doesn’t mean much to me because the rear camera is great. However, I have found myself just annoyed with the fact that it’s even there to begin with.
Accessories I Bought
I went for 3D MaxPider car mats throughout, some center console storage, trunk storage, and matching window tint on the front windows. I also bought Tesla’s Pet Liner, which is great because it comes with door coverage and a bit of a barrier. My pup, Finn, climbs right over it and prefers the front seat, so I fold it in half, and it still covers the passenger seat very well:
🚨 Something’s different about my best friend Finn in this video compared to the last…🐾🐶
Watch our full ride home from Finn’s haircut on Tesla FSD v14.3.8 https://t.co/eyrj1QefAj pic.twitter.com/f04jVIBgMV
— TESLARATI (@Teslarati) September 8, 2026
They’re all pretty standard accessories, but the one thing I use the most is actually this phone mount from Amazon.
It’s great for making FSD content for TikTok or throwing my phone on it just to hold. I never use it to watch anything (I’m wildly against that concept), and I usually use the wireless charging mat that comes standard. It is really great and convenient, and the magnet is super strong.
Cabin Noise, Sound System Quality
The Model Y Premium comes with acoustic-lined glass, which really dampens a lot of the road noise. My car has one of the quieter cabins I’ve ever been in. I can still remember my 2008 Escape Hybrid and how loud it was in there; I thought my Tesla would be that way, but boy was I wrong.
It is such a peaceful ride that even sitting at stoplights behind loud, obnoxious Hondas with shopping cart handles as spoilers does not bother me. A buddy of mine in a 2021 Model Y said upon his first ride in my car that it was a “night and day” difference between the two.
As far as the sound system goes, two of the more outgoing people in my life who love loud music and concerts recently said to me that “the Tesla is quite a time” because of how immersive the listening experience is. The bass is excellent; the ambient lighting truly rounds out the experience.
Even my Dad, who is somewhat of a speaker snob (I can remember going to Tweeter as a boy with him to look at receivers, and he’s always had massive speakers in the house for cranking up some music) has commented on how good the sound quality is. I remember when I bought a Honda Civic a few years ago- his first ride in it- he said, “Damn, the speakers in here suck.”
He wasn’t wrong. They were awful. But in the Tesla, they’re damn good.
Should you buy a Model Y?
Look, I will recommend this car to anyone who asks. I tell my friends constantly that I love my Model Y so much, especially because it just gets better and better over time.
But I also understand the skepticism. I’ll admit one of the most disappointing things about this car is how much range I lose in the winter. In a 40-mile round-trip drive to get wings with some friends in January, I lost 120 miles of range. This is something that would not deter me from buying this car, but at the time, I also didn’t have home charging. Ownership, at that point, was a bit of a pain in the butt.
The thing is, to me, it’s still better than driving a gas car. I just have more fun in a Tesla.
A friend of mine recently bought a new car, and she said she went with a Chevy Equinox because it was a larger vehicle and she has a child. I told her, “I don’t think I’ll ever buy anything other than a Tesla. Once you go Tesla, you never go back.”
“I cannot afford a Tesla,” she said. We all know the ridiculous narrative around Tesla pricing by now, and after she found out how much I pay for my car and the fact that it has the IIHS Top Safety Pick+ rating, she admitted she probably would have done the same if she had known. I wish she would have asked.
The only car I would take over mine is the Cybertruck. And right now, I just can’t afford a Cybertruck, so I’ll stick with the Model Y. I am so satisfied with my pick, and I would buy this car time and time again.
Elon Musk
Elon Musk rips ABC News over fatal NYC Tesla crash report
Musk pushed back on NYC Tesla crash coverage, pointing to a pattern of premature blame.
Elon Musk pushed back overnight against media framing of a fatal Tesla crash in Midtown Manhattan, telling a user on X that “it wasn’t the car” and that the vehicle’s Autopilot system had nothing to do with the wreck.
The crash happened just before 3 a.m. Wednesday, when a 2024 Tesla Model Y struck a sidewalk shed outside 315 Madison Ave., a bus stop pole and a mailbox on East 42nd Street, according to the NYPD. The car kept moving several more blocks before stopping near Second Avenue. Both women inside, each 27, were taken to Bellevue Hospital, where the passenger was pronounced dead. The driver was charged with vehicular manslaughter, driving while ability impaired and leaving the scene of an accident.
Police have not attributed the crash to Autopilot or Full Self-Driving in any public statement. The charges point to impairment, not software. Musk’s response followed a since-deleted ABC News post that he said mischaracterized the incident. Replying to a user on X, Musk wrote that if Autopilot had been engaged, “they would not have crashed,” and added that “the legacy media will never forgive Tesla for failing to advertise with them,”
The legacy media will never forgive Tesla for failing to advertise with them
— Elon Musk (@elonmusk) September 9, 2026
It’s a familiar cycle for Tesla. In June, headlines from several national outlets described a fatal crash in Katy, Texas, as happening while the car was “on autopilot,” based on the driver’s own account to police after his Model 3 struck a home and killed a 76-year-old woman. Tesla’s data told a different story when Ashok Elluswamy, Tesla’s head of AI, said the driver had pressed the accelerator to 100% and reached 73 mph in a residential zone. Harris County prosecutors later confirmed the human override and the driver was charged with manslaughter.
Florida Gov. Ron DeSantis pointed to that same Katy crash last month to argue that outlets routinely name Tesla in crash headlines while leaving other automakers unnamed, even after a driver’s own actions are shown to be the cause. A similar pattern played out in 2024, when Musk had to clarify that FSD was never even downloaded onto the Model 3 involved in a fatal Colorado DUI crash, despite a passenger’s claim that an “auto drive feature” was in use.
Tesla has not issued a separate statement on the Manhattan crash beyond Musk’s posts on X. The NYPD’s investigation is ongoing, and no cause for the driver losing control has been released.
Tesla’s most delayed Cybertruck feature is finally here
Tesla ruined other cars for me: one year Model Y ownership review
