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Tesla Model S

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

An analysis of the HPWC and Dual Charger options for charging the Tesla Model S.

Published

11 years ago

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When you purchase a car, you typically buy what’s on the lot and it’s either fully loaded or stripped down with the bare necessities. Custom orders are few and far between. With Tesla you almost always end up configuring the vehicle to your exact specifications. While they do have inventory cars for immediate sale, they’re often used vehicles with a previous life as a service loaner or test drive vehicle.

There are really 3 kinds of buyers for the Model S when it comes to options:

  1. Those who opt for every available option and price is not a factor.
  2. Those that go for the bare minimum options and stretch their budgets in order to get into the car. These are the owners with the stripped down Model S 60 kWh’s (or even 40’s!) with no Tech package etc.
  3. Those that are in between and select only those options that they really need in order to save money.

If you’re in category 3 then read on.

Tesla High Power Wall Connector (HPWC)

Two points that need to be considered when ordering a Tesla Model S is whether or not the High Power Wall Connector (HPWC) is really for you; a $1,200 option that provides two times the charging rate of the standard option.

The second point to consider is whether you want the on-board dual chargers,

another $1,500 option which allows twice the conversion capacity as the single charger when the power is available.

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Originally the HPWC and Dual Chargers were a single option around $3,000 and later on Tesla split the options out. Why they did that is interesting and indicates that there maybe a reason for having dual chargers without the HPWC.

Also see: Should You Leave Your Tesla Universal Mobile Connector (UMC) Plugged In?

I drive a lot: 35K miles per year. Other than a relative who’s a full time truck driver, I drive more than anyone I know. I plan on driving my Tesla just as much. On a daily basis I range from 90 miles to 175 miles in a given day just based on my usual pattern of family shuttling and commuting.

Do you really need the Tesla High Power Wall Connector (HPWC)?

Tesla has a good charging speed calculator on their site. If you take a conservative 200 miles per day and charge on the “standard recommended” home adapter through a NEMA 14-50 outlet, you can replenish the battery capacity in 6 hours 48 minutes. This measure of time is somewhat misleading as Tesla tends to provide “best” numbers and, unlike an ICE car, charging from an empty battery state is faster than charging from 20% left. Assuming you don’t arrive home with 0 miles left, the time to charge could be a bit longer. Most people I know, once home from work, are there for a minimum of 8 hours thereby giving them a significant amount of time to charge up. While Tesla recommends the HPWC for anyone regularly driving over 100 miles a day, I think the guidance is incorrect and the HPWC is not needed for the most part.

That being said, there are possible edge cases where it could be needed:

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  • On-call type people that can come and go from the charge location with few hours each time and long times away from the charger. Doctors and other professions like that should carefully consider their patterns.
  • People that can take advantage of time-of-use metering (discounted off-peak electricity rates) from their electricity provider. Here in Massachusetts you have to consume at least 2,500 kWh per month over a 12 month period to qualify and generally this doesn’t work for homeowners even with high energy consumption. My utilization can run as high as 2,296 kWh/month but this still wouldn’t qualify.
  • The HPWC is one way to get a second charging cable. It’s not the most efficient way since a second mobile connector is just over half the price, so you’re better off buying that second mobile connector and leaving it connected in the garage.
  • It’s for a business or public use environment. Here people need to come and go as fast as possible. Whether that’s your business or you decided to share your power via PlugShare or the like, then you’ll want to provide the fastest charge possible to get people moving on.

So you don’t need the HPWC. Also don’t forget that the HPWC requires a lot more power and will likely cost more to install than a standard NEMA 14-50. A NEMA 14-50 home installation can run between $1,000-$1,500 but this varies greatly depending on the distance that power lines needs to be pulled and the underlying power supply/infrastructure of your home set up.  I was fortunate enough to have mine installed at $675 since, apparently, my infrastructure didn’t require too much of an upgrade.

Tesla Dual Chargers

Tesla-Dual-Charger

If you don’t purchase the HPWC option do you really need dual chargers? Personally, unless you never plan on taking an extended road trip or don’t care about future proofing you car, the on board dual chargers could provide some tremdous value.  It’s this very same reason why I modified my order at the last minute and added the dual charger option.

At home using a NEMA 14-50 or on the road using only the Tesla Superchargers network (ie, epic 12,000 mile Tesla road trip) you wouldn’t need dual chargers. The dual chargers provides no benefit in each of those scenarios.

However, by having the dual chargers, you’d be able to take advantage of several fast charge options out there while future-proofing your vehicle as public charging technology advances.

  • Publicly available HPWC’s out there like those at a Tesla Store or Tesla Service Center or those shared by homeowners and businesses which will grow over time. To take advantage of max charge rates on these you need dual chargers. Not all HPWCs provide more than 40A though.
  • Public EV Plugs (J1772) can go up to 70A. The number of these that are over 40A is very limited today but that is rapidly changing. To take advantage of max charge rates on these you need dual chargers.
  • CHAdeMO outlets  offer higher speed charging for those that can take advantage of them. Tesla has been promising an adapter for a while but has yet to deliver.

While dual chargers are an extra cost on top of an already expensive car, at roughly 1% of the cost of the car and potentially saving hours of frustrating wait time, I think the decision to get dual chargers is a no-brainer and provides some future proofing for the car. HPWC likely always an unnecessary expense.

Thoughts/comments? Would love to hear from you.

 

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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.

Published

2 weeks ago

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May 27, 2025

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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.

Published

3 weeks ago

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May 23, 2025

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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

Published

3 months ago

on

March 11, 2025

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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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