One piece of the Tesla Cybertruck launch we didn’t see coming (nor did Tesla event planners or CEO apparently) was the Range Extender, which we are still learning more about now. But what we already know answers some questions like how Cybertruck owners expect to tow or travel long distances, especially in the cold, without charging as often.
But the 130-mile add-on battery also presents some opportunities that harken back to when Tesla demonstrated battery swap stations. And its interface to the Cybertruck even presents opportunities for other energy sources from solar to hydrogen to even petroleum generators.
Range Extender omitted during the presentation
It is hard to tell if Tesla and CEO Elon Musk were supposed to have mentioned the range extender during the admittedly haphazard and cringey presentation but it would seem like a really big deal. For one, it would get the Cybertruck acceptably close to Tesla’s originally promised 500-mile range.
Tesla’s website says the Range Extender brings the mid-level Cybertruck to “470+” miles of range. That’s an additional 130+ miles and, if the 123kWh battery pack takes the Cybertruck 340 miles (2.7 miles/kWh), the range extender would need to be an additional ~47kWh.
Range Extender or Federal Tax Credit Extender?
By making 1/3 of the 500-mile battery an external accessory, Tesla was able to keep the price just under $80,000. That allows it to qualify most owners for the $7500 tax credit which is a significant savings and could be put towards the rest of the 500-mile battery on Uncle Sam’s dime.
Also, being frank here, most owners will not need a 500-mile battery even if it makes them feel a lot safer. But the prospect of being able to add more range at a later time might allow some potential buyers to make the purchase and “see how it goes” with just 300 miles of range.
How much does the Cybertruck Range Extender weigh?
47kWh is a huge and heavy battery, one bigger than some medium-range BEV‘s batteries. We’re talking on the order of 1000 lbs. As an estimate, we can take the 454kg ~75kWh 4680 battery pack weight of the Model Y battery and figure that at about 2/3rds the size, the Range Extender will come in at 300kg or 660lbs. Or more likely around 700lbs, if you consider the interface, packing challenges, safety, ruggedness, and efficiencies of a smaller pack.
Remember, Tesla will have to build this 700lb high-density/inertia object to not come flying through the cabin in a front-facing collision. It will also affect the performance of the vehicle in the same way that putting 4 more people in the cab.
How much does the Tesla Cybertruck Range Extender Cost?
Since Tesla didn’t talk about it at the event and it doesn’t have a sticker price on the customer-facing website, we can’t be certain. However, in the website source code, the following was found:
$16,000 seems like a bit of a premium on what an external 47kWh battery would cost. Assuming Tesla has hit the $100/kWh on the 4680 cell level, that’s a cost of $4700 and another $11K for packaging, production, and a fat margin.
That price could change and hopefully come down as the scale increases and would probably be a lot more popular with towing Cybertruck owners at under $10K.
Optional pack that fits in about 1/3 of the truck bed. Still room for plenty of of cargo.
It’s meant for very long trips or towing heavy things up mountains.
So now that we can guess the size specs and price of the Cybertruck Range Extender, we can think about what it means for the vehicle.
At close to 700lbs, this isn’t something that 1 or 2 people can just install themselves. It is going to take either a hydraulic jack/forklift type of installation or a more permanent fixture that would be installed at the factory. It will also either need to have its own BMS and cooling system or tap into the Cybertruck’s heating/cooling liquids. So what I’m saying is that the interface might not just be a big DC plug.
Range Extender as a Powerwall?
In a perfect world, you could leave your Tesla Range Extender in your garage and it would act like a 3-pack of 14kWh Tesla Powerwalls, saving you from power outages and maybe earning some grid-shaving money from day to day.
Then when it was time to tow the boat up to the mountains or go on a cross-country vacation in the cold, you could “throw” it in your Cybertruck bed and use it as extra range and then as a Powerwall for the lake house.
Range Extender battery swap?
Tesla had a Model S battery swap station in California in 2015 that would allow a new battery to be installed quicker than a gas fill-up. It never went live because, in Tesla’s words, they saw that charging was getting so quick that it wouldn’t need the complexities of a battery swap soon. Additionally, not all batteries are the same, and older batteries aren’t worth nearly as much as new ones so people could be losing money on the value of their car on a swap.
The Chinese manufacturer Nio is the only current company offering a significant battery swap option for EVs.
However, if the Cybertruck becomes as popular as it initially seems, maybe it makes sense for Tesla to run some range extender battery swap stations. A quick stop with a forklift could add 130 miles of range in a few minutes. Maybe multiple batteries could be added at the same time? Put these at the base of ski mountains and the outskirts of deserts?
Or more realistically, instead of buying a Tesla Range Extender, rent one for that week’s vacation to the mountains for a fraction of the cost. These could be picked up and dropped off at Tesla stores or 3rd party outlets. Maybe a super high-power automated battery swap station like Gogoro. Maybe it is manned by super strong Tesla Optimus robots (lol).
More Range Extender options
If it is a bi-directional interface (and how else would you charge it?) it could also be used to DC fast charge other things…like the Cyberquad! Seriously though Cybertruck owners could DC fast charge electric ATVs, boats, and motorcycles a lot faster than the 9kW Level 2 power that the Nema 14-50 outlet would provide.
With Tesla’s range extender interface, one could also see the company offering different battery sizes. Maybe a 50-mile option that could be carried by a tow truck driver. Or a longer range 250-mile option? 500 miles?
Or solar? We know Tesla plans to put a solar tonneau cover into production so this could be the interface there. While this will be a microscopic amount of power at any given time, it will add thousands of miles of range over the life of the vehicle. Just don’t expect to drive on solar like a Solar Race car.
Even better, why limit it to battery packs? What if Tesla offered a 1000-mile hydrogen or *gasp* gasoline generator alternative for those way out in the sticks? Yes, I know very unlikely that it would get Elon Musk’s approval but maybe if Tesla opens the connector to 3rd parties, it wouldn’t be rocket science to deliver bespoke power options.
I can already imagine someone doing a cross-country Cannonball run with the Cybertruck where it doesn’t ever need to stop. On FSD? Elon hook us up.
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Tesla has been forced to reimburse a customer’s Full Self-Driving package after an arbitrator determined that the automaker failed to deliver it.
Tesla has been promising its car owners that every vehicle it has built since 2016 has all the hardware capable of unsupervised self-driving.
The automaker has been selling a “Full Self-Driving” (FSD) package that is supposed to deliver this unsupervised self-driving capability through over-the-air software updates.
Almost a decade later, Tesla has yet to deliver on its promise, and its claim that the cars’ hardware is capable of self-driving has been proven wrong. Tesla had to update all cars with HW2 and 2.5 computers to HW3 computers.
Tesla is now attempting to deliver its promise of unsupervised self-driving on HW4 cars, which have been in production since 2023-2024, depending on the model. However, there are still significant doubts about this being possible, as the best available data indicate that Tesla only achieves about 500 miles between critical disengagements with the latest software on the hardware.
On the other hand, many customers are losing faith in Tesla’s ability to deliver on its promise and manage this computer retrofit situation. Some of them have been seeking to be reimbursed for their purchase of the Full Self-Driving package, which Tesla sold from $8,000 to $15,000.
A Tesla owner in Washington managed to get the automaker to reimburse the FSD package, but it wasn’t easy.
The 2021 Model Y was Marc Dobin and his wife’s third Tesla. Due to his wife’s declining mobility, Dobin was intrigued about the FSD package as a potential way to give her more independence. He wrote in a blog post:
But FSD was more than hype for us. The promise of a car that could drive my wife around gave us hope that she’d maintain independence as her motor skills declined. We paid an extra $10,000 for FSD.
Tesla’s FSD quickly disillusioned Dobin. First, he couldn’t even enable it due to Tesla restricting the Beta access through a “safety score” system, something he pointed out was never mentioned in the contract.
Furthermore, the feature required the supervision of a driver at all times, which was not what Tesla sold to customers.
Tesla doesn’t make it easy for customers in the US to seek a refund or to sue Tesla as it forces buyers to go through arbitration through its sales contract.
That didn’t deter Dobin, who happens to be a lawyer with years of experience in arbitration. It took almost a year, but Tesla and Dobin eventually found themselves in arbitration, and it didn’t go well for the automaker:
Almost a year after filing, the evidentiary hearing was held via Zoom. Tesla produced one witness: a Field Technical Specialist who admitted he hadn’t checked what equipment shipped with our car, hadn’t reviewed our driving logs, and didn’t know details about the FSD system installed on our car, if any. He hadn’t spoken to any sales rep we dealt with or reviewed the contract’s integration clause.
There were both a Tesla lawyer and an outside counsel representing Tesla at the hearing, but the witness was not equipped to answer questions.
Dobin wrote:
He was a service technician, not a lawyer or salesperson. But that’s who Tesla brought to the hearing. At the end, I genuinely felt bad for him because Tesla set him up to be a human punching bag—someone unprepared to answer key questions, forced to defend a system he clearly didn’t understand. While I was examining him, a Tesla in-house lawyer sat silently, while the company’s outside counsel tried to soften the blows of the witness’ testimony.
He focused on Tesla’s lack of disclosure regarding the safety score and the fact that the system does not meet the promises made to customers.
The arbitrator sided with Dobin and wrote:
The evidence is persuasive that the feature was not functional, operational, or otherwise available.”
Tesla was forced to reimburse the FSD package $10,000 plus taxes, and pay for the almost $8,000 in arbitration fees.
Since Tesla forces arbitration through its contracts, it is required to cover the cost.
Electrek’s Take
This is interesting. Tesla assigned two lawyers to this case in an attempt to avoid reimbursing $10,000, knowing it would have to cover the expensive arbitration fees – most likely losing tens of thousands of dollars in the process.
It makes no sense to me. Tesla should have a standing offer to reimburse FSD for anyone who requests it until it can actually deliver on its promise of unsupervised self-driving.
That’s the right thing to do, and the fact that Tesla would waste money trying to fight customers requesting a refund is really telling.
Tesla is simply not ready to do the right thing here, and it doesn’t bode well for the computer retrofits and all the other liabilities around Tesla FSD.
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After hitting a major milestone on Monday, BYD claimed it’s about to unleash “the largest-scale smart driving OTA in history.”
BYD preps for the largest-scale software update
BYD announced on Weibo that there are now over 1 million vehicles on the road with its God’s Eye smart driving system.
The milestone comes after it upgraded 21 of its top-selling vehicles with the smart driving tech in February, at no extra cost. Even its most affordable EV, the Seagull, which starts at under $10,000 (69,800 yuan), got the upgrade.
BYD didn’t reveal any specifics, only promising “it is safer and smarter.” The Chinese EV giant has three different “God’s Eye” levels: A, B, and C.
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The highest, God’s Eye A, is typically reserved for BYD’s ultra-luxury Yangwang brand, which utilizes its DiPilot 600 smart cockpit with three LiDARs.
God’s Eye B is used for other luxury and higher-end models, including those under Denza, which utilize DiPilot 300 and one or two LiDARs.
The base God’s Eye C system, used for BYD brand models, includes 12 cameras, five wave radars, and 12 ultrasonic radars, all supported by DiPilot 100.
Last week, BYD’s luxury off-road brand, Fang Cheng Bao, launched a limited-time offer for Huawei’s Qiankun Intelligent Driving High-end Function Package. The discount cuts the price from 32,000 yuan ($4,500) to just 12,000 yuan ($1,700).
BYD Seagull EV testing with God’s Eye C smart driving system (Source: BYD)
After selling another 382,585 vehicles in June, BYD now has over 2.1 million in cumulative sales in the first half of 2025, up 33% from last year.
With the “largest-scale smart driving” update coming soon, BYD’s vehicles are about to gain new functions and safety features. Check back soon for more details.
BYD claims it’s “capable of leading the transformation and popularization of intelligent driving” with over 5,000 engineers dedicated to the field. As the world’s largest NEV maker, BYD said it’s committed to transforming the auto industry with safer and more sustainable solutions for global markets.
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Kia’s electric SUV is a hit in the UK. The EV3 was the most popular retail EV through the first half of 2025, pushing Kia to become the UK’s third top-selling car brand so far this year.
Kia EV3 leads as the UK’s most popular retail EV
The EV3 is Kia’s fastest-selling EV in the UK and a massive part of the brand’s success this year. Kia said the compact electric SUV contributed to its best-ever June, Q2, and first half EV registrations so far this year.
In January, the EV3 “started with a bang,” racing out to become the UK’s most popular retail EV. The EV3 was the best-selling retail EV in the UK and the fourth best-selling EV overall in the first quarter, including commercial vehicles.
Through the first half of the year, the Kia EV3 maintained its crown as the UK’s most popular EV with 6,293 registrations.
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The EV3 starts at £33,005 ($42,500) as the ‘brand’s most affordable EV yet.” It’s available with two battery packs: 58.3 kWh or 81.48 kWh, providing a WLTP range of up to 430 km (270 miles) and 599 km (375 miles), respectively.
Kia EV3 (Source: Kia)
Kia sold 31,643 electrified vehicles in the first half of 2025. Although this includes fully electric vehicles (EVs), plug-in hybrids (PHEVs), and hybrids (HEVs), it still accounts for over half of Kia’s total of 62,005 registrations.
Kia EV3 (Source: Kia)
After opening orders for the EV4 last week, Kia’s first electric hatchback, the brand expects to see even more demand throughout 2025. With up to 388 miles WLTP range, it’s also the longest-range Kia EV to date.
Next year, Kia will introduce the entry-level EV2, which will sit below the EV3 in Kia’s lineup. Kia is looking to add an even more affordable EV to sit below the EV2. It will start at under $30,000 (€25,000), but we likely won’t see it until closer toward the end of the decade.
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