First seen Cybertruck charging curve disappoints, but is that the whole story?
The Tesla Cybertruck, Tesla’s first vehicle to fully utilize its larger 4680-format cell, has been out for about a month now. But with only limited quantities on the road in the public’s hands, there have still been a lot of questions about the vehicle.
Now we’ve got an answer to one of the most important questions: charge rate. It’s not great – but that might not be the whole story.
Peak charging speed, measured in kilowatts or kW, is one of the most important stats on an EV – arguably much more important than range. The higher the charge rate the quicker you can get back on the road during a charging session. Older EVs have DC charge rates around 50kW, which is quite slow compared to today’s standards, where EVs are usually capable of 150kW+, with some models capable of up to 350kW. Tesla’s V3 superchargers can deliver up to 250kW of power, which is plenty fast, though the new V4s are even faster at 350kW.
But another important aspect of charging is charge curve, or how quickly a vehicle “tapers” off of the peak charge rate to a lower one. EVs can’t sustain peak charge rates forever, so will usually only hold on to the peak rate for a certain period of time before lowering to a slower rate. This is why EVs usually state their DC charge time “to 80%,” because charging past 80% at a high rate is generally bad for battery durability.
Until now, this was an open question for the Cybertruck, especially since it is Tesla’s first car to fully utilize the 4680-format cells which have been noted to have somewhat worse charging performance than the previous 2170 format cells.
Video of Cybertruck’s charging curve
But in a video posted by Our Cyber Life, a new youtube channel formed by a couple who took delivery of their Cybertruck two weeks ago, we now know what the Cybertruck’s charge curve looks like. The channel’s videos so far have fully focused on the Cybertruck ownership experience, from a couple who have never owned a Tesla before (but one of them, nevertheless, seems to be a Tesla employee – which explains the early Cybertruck delivery).
The video fully documents a Cybertruck charge at the Tesla supercharger in Mesa, Arizona, a V3 Supercharger capable of 250kW peak power delivery. Most of the video is just a 5x speed timelapse of the screen during the charging session, though Our Cyber Life helpfully included graphs showing charge rate for those who are “not interested in watching paint dry.”
As we can see in the video and accompanying graphs, the Cybertruck seems to have a relatively poor charge curve, at least for this charging session at a busy V3 Supercharger. The car starts at 14% state of charge, after about 20 minutes of preconditioning (an automatic process to raise battery temperature to accept higher charge rates).
It immediately jumps to a peak charge rate of 255kW, but starts to taper quite rapidly, with charge rate gradually decreasing starting at 20% SOC. By 40% SOC the car is down to 150kW, 100kW at 60% SOC, and reaches a plateau of 75-80kW at about 66% SOC, which it holds until around 90% – when the Youtuber’s camera died and the Cybertruck headed out.
All in all, it was a 50 minute charge session from 14-90%, adding 94kWh worth of energy into the Cybertruck’s 123kWh battery. Or, using the standard 80% cutoff, 14-80% took 40 minutes.
Brief comparison with other vehicles
Tesla vehicles do tend to taper rather early, but make up for it with high peak charge rates. It’s usually better to do more frequent, shorter charge sessions to take advantage of higher charge rates at low SOC, rather than to charge all the way up to 90 or 100%. Plus, busy Superchargers will penalize you for sticking around too long while others are waiting for a charge.
This is still a reasonably quick charge rate, especially when compared to the early days of EV charging or compared to AC charge times which run in the hours, not minutes.
But given the Cybertruck’s huge 123kWh battery, we expected quicker charging than this. A larger battery can usually sustain a higher charge rate for longer (this concept is known as “C-rate,” or charge rate divided by total capacity). A Model 3 Long Range has a peak C-rate of 3 and average C-rate of 1.4 when charging from 0-100%, but in this test, the Cybertruck showed a peak C-rate of just over 2 and average of about .9.
Measured in “miles of charge added per minute,” which is an even more important metric for practical driving purposes, the picture gets somewhat worse for the Cybertruck. The Model 3 is rated at 333 miles of range, and from 14-80% can add about 220 miles of range in 31 minutes. By the same metric, from 14-80%, the Cybertruck added 206 miles in 40 minutes – less range in a longer period of time.
All of these are significantly slower than the current charging champions, the Hyundai Ioniq 5 and its cousin the Kia EV6, which despite a slightly lower peak charge rate of around 230kW, have an impressively broad charging curve that can sustain speeds of 170-180kW all the way up to 70-80%.
And compared to a similar-ish vehicle, the Rivian R1T, the R1T tapers a little bit later, but not by a tremendous amount. The R1T wins here, but by a small margin (a margin which becomes larger when taking into account Rivian’s higher efficiency and Tesla’s traditional, uh, “optimistic” range estimates).
But that’s not the whole story
However, we need to caution that this is only one test in one set of circumstances – and the circumstances are less than ideal for the Cybertruck in question.
First, the Cybertruck’s charging system is built with the ability to switch between 800-volt and 400-volt charging. V3 Superchargers are 400V, so it’s possible that the Cybertruck will be able to charge better from an 800V charger – if Tesla gets around to installing them. The V4 Supercharger is supposed to be capable of 800V charging, but so far we’ve only seen 400V installs, showing how Tesla’s charging network isn’t ready for Cybertruck – and that’s true in more ways than one.
Second, it was a busy Supercharger, and on busy Superchargers sometimes Tesla limits charging speed. A Supercharger station won’t necessarily be built with the ability to give maximum 250kW power to every stall at the same time, because you’re rarely going to have every stall full with a car at 0% SOC calling for maximum charge rate. So a 10-stall, 250kW charger might have a total 1-1.5MW capacity, instead of the 2.5MW you’d expect from the nameplate 250kW charge rate. It is possible the Cybertruck was given max charge rate at low SOC, and then the station itself tapered off power delivery in order to prioritize lower-SOC vehicles at the station.
Finally, this is a brand-new vehicle and Tesla may be waiting for more data on battery health while charging, in order to potentially increase charge rates in the future. Tesla is fond of offering over-the-air updates to improve vehicle capabilities, and to allow early owners to act as beta testers. In this case, the owner in question is also a Tesla employee, and Tesla is even more willing to use employees as guinea pigs on new vehicles. So it’s entirely possible that charge rates might increase in a future software update – as happened with Rivian as well.
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Hyundai has unveiled the design refresh of its Ioniq 6 sedan, and announced that it will become a family of cars rather than a single model, with an N Line trim and upcoming N performance model, much like its sister car the Ioniq 5.
Hyundai has been doing great with its EVs lately, hitting sales records and getting great reviews.
Much of that focus has been on the Ioniq 5, an attractive crossover SUV with lots of capability at a good price – and a bonkers N performance version which has been breaking different kinds of records.
The Ioniq 6, conversely, hasn’t attracted quite as much attention, even though it has some records of its own (it’s the most efficient vehicle in the US… for under $70k).
Between its admittedly odd looks – much more aerodynamic and rounded than the comparatively blocky 5 – and it fitting into the less-popular (but better) sedan form factor, it just hasn’t captured as much imagination as the 5.
It has also fallen somewhat behind. The Ioniq 5 got a big update this year, including a native NACS port, the first non-Tesla mass market vehicle to hit the road with one of these included (and it even charges faster than a Tesla does on home turf). The 6, however, is still sitting on its original design from when it first started production/shipping in 2022/23.
But that’s about to change, as Hyundai is giving the model some love with a design update and some hints at new things to come.
We’ve seen spy shots of these design updates before, but now Hyundai is showing them to everyone at the Seoul Mobility Show.
Hyundai showed two models today, the standard Ioniq 6 and the “N Line,” an upgraded trim level with some interior and exterior changes to look a little more sporty. Hyundai has used similar nomenclature for its other models, and that carries over here.
Both have a redesigned front end, making it look more aggressive than the prior bulbous and aerodynamic shape, and narrower headlights.
The N Line looks even more aggressive than the standard model, though, with an even more aggressive front and rear end.
Hyundai says that the redesign will also include interior enhancements for “a more comfortable, intuitive experience,” with a redesigned steering wheel, larger climate control display, upgraded materials and redesigned center console with more physical controls.
Beyond this, the refresh was light on details – intentionally, with a full unveil of specs and changes coming later. We can imagine a lot of the improvements on the 2025 Ioniq 5 will be carried over, such as a native NACS port for example, and potentially a slightly larger or faster-charging battery.
We had also previously heard hints that an N version (yes, “N” and “N Line” are different, no, we don’t know why they used these confusing names) of the Ioniq 6 is coming, and Hyundai reiterated those hints today – even giving us a glimpse of the car in the background of one of its shots.
Now THIS one looks quite aggressive, with a bigger double wing and potentially some changes to the diffuser (it’s hard to tell from the shot, as the N Line also has a modified diffuser).
The ioniq 5N has earned rave reviews from enthusiasts for its bonkers driving dynamics and comparatively reasonable price for a true performance vehicle. But it’s still an SUV format, and frankly, an SUV will never be a sportscar no matter how many horsepower you put into it (I will die on this hill).
The 6, however, with its sedan shape and footprint, could make for a much more compelling sports package once it’s all put together. So we’re very excited to see what Hyundai can do if they apply the same magic they put into the 5 into a new 6N. Looking forward to July.
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Over the next two years, homebuilder Lennar is outfitting more than 1,500 new Colorado homes with Dandelion Energy’s geothermal systems in one of the largest residential geothermal rollouts in the US.
The big draw for homeowners is lower energy bills and cleaner heating and cooling. Dandelion claims Lennar homeowners with geothermal systems will collectively save around $30 million over the next 20 years compared to using air-source heat pumps. Geothermal heat pumps don’t need outdoor AC units or conventional heating systems, either.
Geothermal systems use the sustained temperature of the ground to heat or cool a home. A ground loop system absorbs heat energy (BTUs) from the earth so that it can be transferred to a heat pump and efficiently converted into warmth for a home. Dandelion says its ground loop systems are built to last for over 50 years and should require no maintenance.
Dandelion’s geothermal system uses a vertical ground closed-loop system that is installed using well-boring equipment and trenched back into the house to connect to a heat pump. The pipes circulate a mixture of water and propylene glycol, a food-grade antifreeze, that absorbs the ground’s temperature. A ground source heat pump circulates the liquid through the ground loops and it exchanges its heat energy in the heat pump with liquid refrigerant. The refrigerant is converted to vapor, compressed to increase its temperature, then passed through a heat exchanger to transfer heat to the air, which is circulated through a home’s HVAC ductwork.
Daniel Yates, Dandelion Energy’s CEO, called the partnership with Lennar a “new benchmark for affordable, energy-efficient, and high-quality home heating and cooling.” By streamlining its installation process, Dandelion is making geothermal systems simpler and cheaper for homebuilders and homeowners to adopt.
This collaboration is happening at a time when Colorado is pushing hard to meet its clean energy targets. Governor Jared Polis is excited about the move, calling it a win for Coloradans’ wallets, air quality, and the state’s leadership on geothermal energy. Will Toor, executive director of the Colorado Energy Office, said that “ensuring affordable access to geothermal heating and cooling is essential to achieve net-zero emissions by 2050, and we’re excited to be part of such a huge effort to bring this technology to so many new Colorado homes.”
And it’s not just about cutting emissions – geothermal heat pumps help reduce peak electric demand. Analysis from the Department of Energy found that widespread adoption of these systems could save the US from needing 24,500 miles of new transmission lines. That’s like crossing the continental US eight times.
Colorado is making this transition a lot more attractive through state tax credits and Xcel Energy’s rebate programs. These incentives slash upfront costs for builders like Lennar, making geothermal installations more financially viable. The utility’s Clean Heat Plan and electrification strategy are working to keep energy bills low while meeting climate goals.
Read more: This will be the first geothermal energy storage system on the Texas grid
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Polestar has removed the Polestar 2 from its US website header in an early sign of how new tariffs will restrict choice and competition for American consumers, thus increasing prices.
The Polestar 2 is Polestar’s first full EV – the original Polestar 1 was a limited-edition plug-in hybrid.
It started production in 2020 in Luqiao, Zhejiang, China, where Polestar and Volvo’s parent corporation, Geely, was founded.
And there’s the rub: while Polestar’s newer EV, the 3 (which we just drove the new single motor version of last week), is built in South Carolina, the 2 is not.
Unfortunately, that interacts with some news that has been getting a lot of play lately: tariffs.
The US has been gradually getting stupider and stupider on the issue of tariffs, apparently determined to increase prices for Americans and decrease the competitiveness of American manufacturing in a time of change for the auto industry.
It is widely acknowledged (by anyone who has given it a few seconds of thought) that tariffs increase prices and that trade barriers tend to reduce competition, leading to less innovation.
It started with 25% tariffs on various products from China, implemented in the 2018-2020 timeframe. Then, in 2024, President Biden implemented a 100% tariff on Chinese EVs, effectively stopping their sale in the US. These tariffs included some exceptions and credits based on Volvo’s other US manufacturing, which Polestar had used to keep the most expensive versions of the 2 on sale in the US, while restricting the lower-priced versions from sale. Nevertheless, they were a bad idea.
Now, in yet another step to make America less competitive and inflate the prices of goods more for Americans, we got more tariff announcements today from a senile ex-reality TV host who wandered into the White House rose garden (which he does not belong in). These tariffs do not include the same exceptions as the previously-announced Biden tariffs.
Apparently this has all been enough for Polestar, as even in advance of today’s tariff announcements, the company suddenly removed its Polestar 2 from its website header today.
The change can be seen at polestar.com/us, where only the Polestar 3 and 4 are listed in the header area. On other sites, like the company’s Norwegian website or British website, the car is still there. The Polestar 2 page is still up on the US website, but it isn’t linked to elsewhere on the site (we’ll see how long it stays up).
We reached out to Polestar for comment, but didn’t hear anything back before publication. We’ll update if we do.
It makes sense that the Polestar 2 would still be for sale elsewhere, as it only started production in 2020. Most car models are available for at least 7 years, so this is an earlier exit than expected.
So it’s likely that all of the tariff news is what had an effect in killing the Polestar 2.
Then again, this is also just the second day of a new fiscal quarter. Perhaps the timing offers Polestar an opportunity to make a clean break – especially now that the lower-priced version of its Polestar 3 is available.
Despite the lower $67.5k base price of the new Polestar 3 variant, that represents a big increase in price for the brand, which had sold the base model Polestar 2 for around $50k originally, before all of these tariffs.
Update: Polestar got back to us with comment, but understandably, it doesn’t say much:
Polestar is a three-car company and Polestar 2 is available for customers now. There are a select number of Polestar 2s in stock at retailers that can be found on Polestar.com, but Polestar 3 and Polestar 4 will be the priority in the North American market.
Electrek’s Take
This isn’t the first car that America has been deprived of due to tariffs. The Volvo EX30, one of our most anticipated vehicles, and Electrek’s Vehicle of the Year for 2024, had its American availability pushed back due to tariffs.
Volvo decided to build the car in Belgium and export it to the US, but now that new tariffs apply to the EU as well, maybe that low-priced, awesome, fast, small EV will instead stay in Europe instead of being shipped overseas.
This shows how mercurial tariff fiats from an ignoramus are bad for manufacturing, as they mean that companies can’t make plans – and if they can’t make plans, eventually, they’ll probably just write the country making the random decisions out of their plans so they don’t have to deal with the nonsense.
And we’ve heard this from every businessperson or manufacturer representative we’ve talked to at any level of the automotive industry. Nobody thinks any of this is a good idea, because it objectively is not. All it does is make business harder, make the US less trustworthy, make things more expensive, and overall just harm America.
Yet another way that Americans are getting screwed by this stupid nonsense. 49% of you voted for inflation, and 100% of Americans are now getting it. Happy Inflation Day, everyone.
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