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Charging the Tesla Model S with the HPWC

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Tesla HPWCWhen I was buying my Model S I decided that I didn’t need the High Power Wall Charger (HPWC), but I did go with the dual chargers. At home I regularly charge on a NEMA 14-50 which gives me about 28 miles per 1 hour of charge, but with the onboard dual chargers it’s possible to double that rate provided you’re using the proper charger.

My office is across the street from the Tesla store in Natick, MA and they have free charging available in 6 parking spots with a couple of HPWCs a short walk away. The other day I skipped my nightly charge and parked in one of the HPWC spots at the mall for a charge the next morning.

Tesla HPWC

The HPWC does not require any special adapters or additional cables and simply plugs into the Model S. It charges at up to 80A when equipped with the Model S dual chargers, but even without it things still work – just at half the charge rate. That’s what I love about the Tesla. Even if you know nothing about voltages, amperages and watts, things just work. Just plug, play and Tesla manages the rest.

Charging

Tesla HPWC ChargingUnlike the Tesla Supercharger which uses a direct current (DC) that bypasses the onboard chargers, the HPWC uses a more traditional alternating current (AC) approach, but with a very high amp draw.

There are very few public chargers out there that can charge at over 40A, and the ones that do probably don’t have a Tesla Model S adapter such as the CHAdeMO.

Editor’s note: Tesla Motors loaned PlugShare a custom CHAdeMO to Model S adapter for their epic 12,000+ mile journey.

The Model S has the ability to charge at different amperages depending on your setting. The rate is limited by both your car’s ability (40A or 80A for single or dual chargers respectively) and the maximum draw allowed by your power source. Make sure your charge rate is set to the highest limit before plugging into a HPWC in order to maximize your rate of charge. The charge rate settings should be auto-memorized by the vehicle based on your GPS location.

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Charge Rate

Tesla HPWC Charge RateAfter I confirmed that the car was charging, I walked to my office while monitoring my state of charge through the iOS app. It reported the charge rate to be about 50 miles/hour (208v at 81A) which confirmed that my dual chargers were working since I was charging twice as fast as my home NEMA 14-50.

To validate the rate of charge I timed the charge and recorded the reported rated range. I started charging at 8:30am and stopped at 11:07 AM (a 90% charge limit was set). I went from 106 miles of rated range to 240 miles of rated range. So I added 134 miles in 2.6 hours for an actual charge rate of 51.2 miles/hour.

I’ve heard about charge rates tapering off as your near the upper limits of your charge, but in my case it charged at the same rate all the way to a 90% limit. I’m assuming that the charge rate begins to slow down after the 90% mark, but unfortunately I didn’t have a chance to confirm that this time around.

Summary

My main goal was to be able to test my onboard dual chargers – something I debated long and hard on when ordering my Model S. I wanted to see them in action and gain peace of mind that they’re there and ready for fast charging if I should one day need it while on the road without access to a Tesla Supercharger.

The HPWC worked great and provided a high rate of charge that was twice the speed of my home NEMA 14-50. But even with that I still don’t think a HPWC at home is really needed.

Also see: Every New Tesla Owner’s Dilemma: Dual Chargers vs High Power Wall Connector (HPWC)

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"Rob's passion is technology and gadgets. An engineer by profession and an executive and founder at several high tech startups Rob has a unique view on technology and some strong opinions. When he's not writing about Tesla

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Tesla teases new color while testing refreshed Model S, X

Tesla teased a new color that could be coming to the United States with the new Model S and Model X.

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Credit: @supergeek18 | X

Tesla appears to be teasing a brand new color while it was testing the refreshed Model S and Model X, which was spotted last week in California.

Tesla currently offers six paint options in the United States, but they are all pretty basic. This has not been a problem for owners as wrapping the vehicles is a common practice, but some people would likely see more versatility from Tesla in terms of their standard paint colors.

This is especially relevant as Europe has been able to have both Midnight Cherry Red and Quicksilver, which were, at one time, exclusive to the market.

Quicksilver made its way to the United States, and Tesla did release a new Red last year with “Ultra Red,” but Midnight Cherry Red never made its way outside the walls of Gigafactory Berlin.

Last week, as the first spy images of the new Model S and Model X were taken and released by The Kilowatts, there was a very noticeable difference with the vehicle, as other changes seemed to be relatively underwhelming: a new paint color.

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Many believed this was simply a wrap, but Ryan Levenson of The Kilowatts, a former Tesla employee, dispelled that rumor after several questions about it.

He said that this is absolutely a factory paint color and not a wrap:

More images were shared by @supergeek18 on X:

Tesla released a new color earlier this year, but it was just a revision to Black, now called “Diamond Black,” featuring speckles that give a reflection and refraction of light as a diamond would.

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However, this new color is certainly quite different than anything Tesla has previously offered in the U.S. before. It is relatively similar to Glacier Blue, a color Tesla launched in Asia. Earlier this year, Franz von Holzhausen, Tesla’s Chief Designer, talked about bringing the color to the U.S.:

“Glacier Blue is just a color that we’ve been talking about with our team — the team is like right through that window by the way — and we were looking at the impact of silver, how do we get pigment into silver and really add a little bit of personality to it. If you look at our palette, you know it was either darks or white, and so we were looking for something in between. Blue is always a fairly popular color.”

It would be a refreshing addition to the options Tesla currently offers, and a breath of fresh air for those who have been wanting a different look altogether.

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Tesla’s new Model S and X spotted, but they leave a lot to be desired

The Model S and Model X testing mules spotted by The Kilowatts have few minor visual changes.

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Credit: Tesla

Tesla has been hinting for a few months now that the flagship Model S and Model X would be getting some attention in 2025 as the vehicles continue to be sold in extremely low volumes.

Both models seem to be under the knife, especially as their newest versions were spotted in California earlier this week.

However, images of the vehicles seem to show that Tesla is not planning a major overhaul, which begs the question: why even do it in the first place?

Tesla makes a decision on the future of its flagship Model S and Model X

The Model S and Model X are grouped with the Cybertruck in Tesla’s quarterly delivery releases, and Q1 saw just 12,881 units of the three cars delivered. The Cybertruck likely made up the majority of this number, as some outlets reported around 6,400 deliveries of the all-electric pickup in Q1.

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This is unconfirmed.

The Model S and Model X have stuck around for “sentimental reasons,” according to CEO Elon Musk, who said back in 2021:

“I mean, they’re very expensive, made in low volume. To be totally frank, we’re continuing to make them more for sentimental reasons than anything else. They’re really of minor importance to the future.”

However, the cars seem to be in need of a serious refresh. As Tesla changed up the exterior aesthetic on both the Model 3 and Model Y, recent images captured of the Model X by The Kilowatts seem to show this is not the strategy with the Model X or Model S:

As we can see, the overall aesthetic of the X, if this is what Tesla plans to release, has literally no changes from a purely visual standpoint. There is the addition of the front bumper camera, which was first implemented on the Cybercab unveiled in October 2024, and then on the new Model Y this year.

There are some new 20″ wheels, and the interior has been fitted with ambient lighting.

The Model S looked to be relatively the same, other than these few hardware changes, including a rear diffuser on this Plaid that was spotted:

While these changes are welcome and should be beneficial, they don’t seem like they will encourage major sales growth, which might be something Tesla is okay with.

Admitting the two cars are low volume and not contributors to the company’s long-term goals, Musk is likely willing to just upgrade things to make these more compatible and better functioning with the Full Self-Driving suite.

Earlier this year, VP of Vehicle Engineering Lars Moravy said the S and X were not going anywhere and would get “some love” before the end of 2025:

Just give it a minute. We’ll get there. The upgrade a couple of years ago was bigger than most people thought in terms of architecture and structure of the car got a lot better, too. But, we’ll give it some love later this year and make sure it gets a little bit…you know, with the stuff we’ve been putting in 3 and Y. Obviously, with 3 and Y, the higher volume stuff, you’ve gotta focus there.”

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It seems these strategies have held true — the S and X appear to be getting what the 3 and Y got with the ambient lighting and front bumper camera (at least on the Model Y).

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President Donald Trump buys a Tesla at the White House – Here’s which model he chose

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Credit: cb_doge | X

U.S. President Donald Trump was greeted by a convoy of Tesla electric vehicles today at the White House after he said last evening he would be buying one of the company’s cars in support of Elon Musk.

A variety of Tesla EVs, including the Model S, Cybertruck, and Model Y, all arrived in Washington on Tuesday around lunch time where the President sat in, examined, and mulled over which car he would choose. White House Press Secretary Karoline Leavitt told reporters today that President Trump would be paying “full market price” for the vehicle.

CEO Elon Musk was alongside Trump to help make his decision:

Which Tesla did President Trump Choose?

After mulling the decision for several minutes, President Trump seemed to have gravitated toward the Tesla Model S Plaid in Deep Red, the company’s quickest and most luxurious offering, suitable for the leader of the U.S.

Trump said:

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“The one I like is that one (Model S). And I want that same color. I’m going to give [Tesla] a check. I don’t want a discount.”

According to images shared from Washington, it seems Musk brought two Model S vehicles — one in Deep Red and another in Deep Blue Metallic — knowing that the President would probably choose that vehicle, but was unsure about the color.

Tesla makes a decision on the future of its flagship Model S and Model X

President Trump’s Comments on Tesla and Elon Musk

President Trump has truly gained a meaningful working relationship with Musk, who he has called “a genius” and “brilliant” on several occasions. Regarding Tesla, the President said:

“Tesla’s a great company; They’re American cars, it’s American made. He employs thousands of people. He has the most modern plants in the world.”

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In regards to the Tesla lineup, President Trump said:

“I know people that have these cars; It blows them away. They love them.”

When talking about the polarizing design of the Cybertruck, he said:

“In terms of imagination, and I think I have a pretty great imagination, who else but this guy would design this and everybody on the road is looking at it. As soon as I saw it, I said, ‘That’s the coolest design.’ You gotta give him (Elon) credit.”

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