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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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Maximizing fleet efficiency and ROI with telematics integration [update]

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Maximizing fleet efficiency and ROI with telematics integration [update]

Even without clean fleet tax credits and cash-on-the-hood incentives, fleet managers are working hard to maximize their ROI on vehicle assets and reduce their total cost of ownership – and they’re increasingly turning to data‑driven telematics solutions to help.

Telematics use data gathered from sensors embedded in a vehicle to monitor its operations. When collected and interpreted correctly, that data can be used to improve fleet safety, boost operational efficiency, and enable predictive maintenance that reduces (if not eliminates) unexpected downtime. Those are real benefits, with some analysts showing up to 30% savings in repair costs even before you factor in the fuel savings from EVs that, according to MAN CEO Alexander Vlaskamp, will cover the added cost of a BEV in less than three years.

As you can imagine, that’s a big business – and the global market for vehicle telematic platforms is projected to reach an impressive $127 billion in the next decade, and the rush is on to get OEMs like Ford (through Ford Pro) and Volvo (who has a deal with Geotab) to integrate digital solutions into their vehicles.

We originally covered these topics back in February, ahead of the ACT Expo. You can read that original article, below, and let us know what you think of the OEMs’ telematics’

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Einride orders electric truck fleet from Peterbilt
Image via Einride.

Last month, Geotab signed a deal with Volvo Group to integrate the manufacturer’s vehicle data API into Geotab’s telematics platform. It’s the latest in a recent onslaught of such deals between telematics providers and OEMs that begs the question: what’s in it for the OEMs?

Almost all modern cars and trucks are “connected” in some way. Ford, for example, began fitting the FordPass Connect modem on all its vehicles in the 2020 model year, and the vehicle (and driver) data gathered powers the Ford Pro fleet management platform and enables offerings like the company’s E-Switch Assist, which enables Ford fleet managers to identify which of its ICE-powered F-150 and Transit assets are ready to make the switch to EV.

“Smart tools informed by data like E-Switch Assist are opening up many new conversations with our commercial customers large and small about EV readiness; we’re already using E-Switch Assist regularly in consultations to help organizations determine if electric trucks and vans are right for them,” says Nate McDonald, EV strategy and cross vehicle brand manager at Ford Pro. “The importance of these tools and technologies goes beyond selling a customer a new vehicle—it changes mindsets about whether electric vehicles will work for their business while potentially saving them time and money.”

So, it makes sense for manufacturers to build that connectivity into their vehicles and makes even more sense to use that data connection to populate a fleet management dashboard that makes it painless for fleet managers to monitor their assets within a trusted ecosystem. Think Android vs. iPhone, and the pain that would go into switching from one to the other after a decade or so of constant interaction – because that’s how the OEMs are looking at it.

Why, then, would an OEM open up that data stream to a third party like Geotab?

The answer, presumably, is that that data sharing is a two-way street: the manufacturer’s are opening up their APIs to Geotab, and Geotab is sharing at least some of the data from other manufacturers with their industry partners.

And Geotab has a lot of partners:

All of those players are convinced that the data coming from their vehicles can produce enough value to seriously impact fleet ROI.

Fleet managers seem convinced, too. In a recent McKinsey survey, nearly 57% of EV buyers said they were willing to switch brands in order to get better connectivity features. And, if you’ve ever worked in “a Ford shop” or “a Chevy shop” you already know what a huge that deal that number might be to an OEM.

McKinsey connectivity survey


BEV buyers’ willingness to switch brands; via McKinsey.

In that point of view, working with a trusted, universal platform like Geotab who doesn’t have a dog in the vehicle sales fight makes sense. If the Ford Transit the fleet buyer is looking at plays well with their fleet auditing software and systems and the Nissan NV doesn’t – well, it doesn’t really matter if Nissan’s fleetail guy is giving you a better deal at that point. It’s just too painful to operate a second dashboard for one subset of assets.

The man-hours saved with a universal and brand agnostic fleet management platform may not be the easiest to trace all the way to the bottom line, but they’re there.

Additionally, the Geotab dashboard can be configured to collect and even analyze data that’s specifically relevant to EVs. Information like charging history, and regenerative braking efficiency, and overall battery health – data that, over thousands of vehicles, can give fleet managers real insight into how long the new electric vehicles they’re considering will last compared to the gas and diesel vehicles they have experience with.

Geotab research shows that EV batteries could last 20 years or more if they degrade at an average rate of 1.8% per year, as we have observed.

According to our data, the simple answer is that the vast majority of batteries will outlast the usable life of the vehicle and will never need to be replaced. If an average EV battery degrades at 1.8% per year, it will still have over 80% state of health after 12 years, generally beyond the usual life of a fleet vehicle.

GEOTAB

Telematics integrations can also help optimize a fleet’s charging schedules, both by scheduling EV charging for lower priced, off-peak hours and by identifying the most dependable high-speed charging stations along regular routes to minimize down time for both vehicles and drivers.

Finally, these data-driven platforms can provide fleet managers tools for tracking and reporting things like carbon emissions and overall energy consumption, which can streamline ESG reporting processes and make it easier for the worker bees to get regulators, administrators, and managers the sort of charts, tables, and graphs they love.

Something like that, anyway.

You can check out my Quick Charge with Nate McDonald, EV strategy and cross vehicle brand manager at Ford Pro, who explores how Ford’s in-house telematics can help fleet managers decarbonize, and head over to Geotab to find out more about their brand agnostic fleet management dashboard, below. Enjoy!

EV or gas – which is right for you?


SOURCES: Fleet Europe, Ford Pro, Geotab, McKinsey; add’l links in article.


If you’re considering going solar, it’s always a good idea to get quotes from a few installers. To make sure you find a trusted, reliable solar installer near you that offers competitive pricing, check out EnergySage, a free service that makes it easy for you to go solar. It has hundreds of pre-vetted solar installers competing for your business, ensuring you get high-quality solutions and save 20-30% compared to going it alone. Plus, it’s free to use, and you won’t get sales calls until you select an installer and share your phone number with them. 

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Giddyup: Polestar picks up $600 million in fresh funding

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Giddyup: Polestar picks up 0 million in fresh funding

Geely-backed performance EV brand Polestar has had some troubling times in recent months, but its future is looking a whole lot better after the company secured a $600 million loan facility to help it keep on keepin’ on.

Despite vehicle sales picking up in 2025 on the strengths of the Polestar EV brand’s Swedish sensibilities, cutting-edge Chinese EV tech, and Volvo-aided safety specs, the company’s financial picture has been anything but rosy, with the threat of having its stock delisted from the NASDAQ looming large at several points.

In a vote of broader confidence and better times ahead, Volvo’s parent company Geely Sweden Holdings AB is backing the brand with more than half a billion dollars of fresh funding to extend its operational runway:

Polestar, as borrower, entered into a credit agreement with a wholly owned subsidiary, as lender, of Geely Sweden Holdings AB in relation to a subordinated term loan facility of up to USD 600 million, of which the last USD 300 million would require lender consent based on Polestar’s future liquidity needs. The term loan facility is available to Polestar for general corporate purposes.

POLESTAR

The new funds are just the most recent part of a big week for Polestar – one that saw the Polestar 4 recently begin deliveries to its first North American customers, and recent upgrades to the Polestar 3 have made that car a viable V2G/V2x offering in Europe, as well. With that in mind, it’s no wonder that Geely wants to see how this all plays out.

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The company has four models in its current line-up on sale in 28 countries, along with additional planned models that include the Polestar 7 SUV (set to be introduced in 2028) and the Polestar 6 coupe/roadster.

Electrek’s Take


Polestar 4 deliveries
Polestar 4; via Polestar.

Product-wise, at least, it’s hard to argue that Polestar’s future appears to be anything but bright. The new Polestar 3 crossover is a viable competitor to the industry-leading Tesla Model Y, and the upcoming Polestar 4 and 5 models seem like winners, too. To drive that point home, Polestar is promoting up to $18,000 in incentives to lure in Tesla buyers.

You can find out more about Polestar’s killer EV deals on the full range of Polestar models, from the 2 to the 4, below, then let us know what you think of the three-pointed star’s latest discount dash in the comments section at the bottom of the page.

SOURCE: Polestar.


If you’re considering going solar, it’s always a good idea to get quotes from a few installers. To make sure you find a trusted, reliable solar installer near you that offers competitive pricing, check out EnergySage, a free service that makes it easy for you to go solar. It has hundreds of pre-vetted solar installers competing for your business, ensuring you get high-quality solutions and save 20-30% compared to going it alone. Plus, it’s free to use, and you won’t get sales calls until you select an installer and share your phone number with them. 

Your personalized solar quotes are easy to compare online and you’ll get access to unbiased Energy Advisors to help you every step of the way. Get started here.

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The backup battery choice you didn’t know you had: natural gas fuel cell

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The backup battery choice you didn’t know you had: natural gas fuel cell

Whether it’s to keep the lights on after a natural disaster or just to avoid peak energy rates, more people than ever are adding battery energy storage to their home solar systems — but li-ion batteries aren’t the only option. The new WATT Fuel Cell uses the natural gas connection your home already has to generate power when you need it.

Technically a solid oxide fuel cell, the WATT unit turns the natural gas in your home into electricity without combustion, relying instead on a chemical reaction between the natural gas and oxygen in the air to create an electric current in a way that’s conceptually similar to a hydrogen fuel cell, but that makes use of a more readily available (and far cheaper) fuel source to generate power while producing far fewer harmful emissions than a conventional generator.

How it works


By WATT Fuel Cell.

The company’s latest offering, the WATT HOME system, recently achieved certification at a 2 kW power rating, marking an important step on the company’s commercialization roadmap as it races to meet market demands for a natural-gas-powered backup solution to guarantee uptime in outage-prone regions.

This week, the company marked another major milestone by installing the of its first 2 kW WATT HOME solid oxide fuel cells (SOFC) at the Edward M. Smith National Career and Life Skills Development Center, Hope Gas’ new state-of-the-art training facility in Clarksburg, West Virginia – but the news doesn’t end there.

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The company plans to take advantage of the new 30% ITC benefit (a federal tax credit that lets homeowners deduct 30% of the cost of qualifying clean energy systems, which now includes natural gas) under the One Big Beautiful Bill Act to help drive sales, with installations beginning in Hope Gas’ utility territory in Q1 of 2026.

“The WATT HOME system’s new 2 kW certification … validates the performance capabilities we’ve engineered for years and strengthens our competitive position as we move into multi-year deployment with Hope Gas,” says Caine Finnerty, WATT’s CEO and Founder. “With the ITC benefit, we anticipate accelerated adoption and substantial value for customers, utilities, and investors.”

The gas fuel cell can send power directly to the home’s panel, keeping the lights on directly, or perform the same function as a solar panel, sending power to a battery where it can be stored for later use.

Keep in mind, though – this isn’t a zero emissions option the way a solar + battery solution is. This is very much a fossil fuel-powered solution that gives off carbon and nitrous emissions, and the only reasons we’re talking about it are:

  • the tech is kind of cool
  • I didn’t know these existed
  • it is objectively cleaner than a conventional ICE generator

That said, while solar is still the better solution in an ideal world, a WATT HOME fuel cell might be a better option in situations where rooftop space is limited (or nonexistent), such as condos or vertically-designed townhomes. In those scenarios, solar panels are unlikely to generate a meaningful amount of electricity, but a fuel cell that can tap into the buildings’ existing natural gas lines to provide reliable backup power if the grid fails.

That makes the fuel cell an attractive option for residents in multi-unit buildings, older historic neighborhoods with strict aesthetic rules, or any building where adding solar panels aren’t feasible, but a low-emission, low-noise backup solution is still needed.

The better question, then, isn’t is it better than solar – it’s is it better than solar for you? If you’re in West Virginia, you might be able to find out in just a few weeks. In the meantime, watch WATT’s own explainer video, below, then let us know what you think of the idea of a natural gas fuel cell in the comments.

Powering your home with a fuel cell


SOURCE | IMAGES: WATT, via PRNewswire.


If you’re considering going solar, it’s always a good idea to get quotes from a few installers. To make sure you find a trusted, reliable solar installer near you that offers competitive pricing, check out EnergySage, a free service that makes it easy for you to go solar. It has hundreds of pre-vetted solar installers competing for your business, ensuring you get high-quality solutions and save 20-30% compared to going it alone. Plus, it’s free to use, and you won’t get sales calls until you select an installer and share your phone number with them. 

Your personalized solar quotes are easy to compare online and you’ll get access to unbiased Energy Advisors to help you every step of the way. Get started here.

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