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"New" Sources of Tesla 'OEM,' Tesla-like, and/or Third-Party CCS1 Adapters

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Due to information/product vacuums caused when Tesla allegedly stepped in and prevented further sales of Korean CCS1 adapters to North America (e.g., by helpful businesses like Harumio), several new potential sources of adapters originated in 2022.

September 21, 2022 Update: Tesla North America has (finally) released its CCS1 adapter to Canadian and U.S. customers. The adapter is available to all (four) Tesla models, provided cars are CCS-enabled. [Hardware/software retrofits are now available from Tesla for cars currently without CCS capability.]

December 26, 2023 news tidbits: (a) Still no Tesla-provided CCS hardware/software updates for non-CCS-compatible Models 3 & Y; but maybe as soon as next month (January 2024)? (b) As discussed elsewhere, the scheduled adoption, now by almost all electric car manufacturers, of the NACS (North American Charging Standard--i.e., the original 2012 Tesla Proprietary Standard plugs and ports) suggests that the CCS standard may (join CHAdeMO and) become a dying technology in North America in coming years. (c) A2Z, a Canadian firm partnering with Asian manufacturer Olink, is now offering the first (to my knowledge) working combined CCS1 (DC)-J1772 (AC) adapter.


"New" (in 2022) Sources of CCS1 Adapters
(Grouped by type.)
Source​
Price​
Specific Notes​
Availability
(in NA)​
Genuine Tesla Adapter
$250(US)
$175(US)
$250
$325(CAN)
$340(CAN)

$240(CAN)
$345(CAN)​
  • Available on the Canada and U.S. Tesla websites.
  • Owner's manual here.
  • For Models S, X, 3, and Y.
  • Car must be CCS-enabled.
  • As of February 2023 factory-approved hardware retrofits (including parts and labor) for non-CCS-enabled cars were available for Models S and X.
  • As of March 2024 CCS hardware upgrades for North American Models 3 and Y (that need them) are available for order on the Tesla website..
  • While waiting for Tesla to release hardware retrofits, some drivers of non-CCS cars tried successful DIY (do-it-yourself) procedures to enable CCS charging in certain 2021 cars and in older vehicles (particularly Models 3 & Y). See numerous postings, starting with this Thread. I assume that with Tesla factory retrofits now available, DIY efforts will diminish in popularity.
AVAILABLE.
Tesla-Adapter Copies
$325
$294
$319
$250
$235
$246
$251
$239
$216
$230
$203
$175
$161
$132

$116.50
$119*​
  • Hansshow/Hautopart adapter may also be found on TesPlus website (for $200 $140).​
  • See website for technical specifications.​
  • Stated to be for Models S, X, 3, & Y (car must be CCS-enabled).​
AVAILABLE.
$250
$200
$170
$185
$180
$165
$155

$140​
  • See website for technical specifications.
  • Claimed to be compatible with "all Tesla models."
  • Car must be CCS-enabled.
  • Graphic imagery suggests that this may be a different product than the Hansshow/Hautopart adapter.
AVAILABLE.
Independently-designed Aftermarket Adapters
A2Z Shop
(Canada)​
$293
$270
$227
$195
$175

$150
$121*​
  • Brand name: "Thunderstorm Plug."
  • Combined CCS1 and J1772 adapter in one.
  • Sold by registered TMC vendor (information available via @A2ZEVSHOP)
  • See website for technical specifications.
  • Design and engineering input originated from this North American company with business ties to:
    • Manufacturer Huizhou Olink Technology Co., Ltd. (China)
  • Works with applicable Models S, Ǝ, X, and Y, but:
    • Car must be CCS-enabled.
  • Note #1: Website CCS1 price may vary slightly, probably due to fluctuating Canada-to-U.S.-dollar rates.
    Note #2: Other CCS1-related accessories (e.g., lock, case, ECU) are also available from A2Z Shop.
AVAILABLE.
In Development
-na-​
  • See website for more information.
  • In size and general shape, reminiscent of the original SETEC CCS1 adapter (see below).
  • Possible release in, when?--2024?
Currently
Unavailable.​
* Includes shipping to North America.

Current Aftermarket Adapters

Note: Adapter images are not to the same scale.​

Comments:
  • USE FOR AC J1772-PLUG CHARGING? - Some/all J1772 plugs can be inserted into the upper circular socket of many CCS1 adapters. This perpetuated the previous misconception that all CCS1 adapters could be used to accept J1772 plug-outfitted charging cables. That is still untrue. Most CCS1 adapters are exclusively for DC charging, while J1772 plugs are used for AC Level 2 charging.
    |
    However, there is news on this front: The latest A2Z Thunderstorm adapter will apparently handle both DC and AC charging. See that website for more information.
    |
    Meanwhile, the other CCS1 adapters listed in this post are (afaik) still not usable with any J1772 AC cable-plug device. So normally a CCS1 adapter is not necessary for AC charging (from 240v wall outlets and at Level 2 charging stations). TMC members have convincingly demonstrated (via photographs) that most other Tesla and aftermarket CCS1 adapters seen so far lack certain key electrical connectors necessary for AC J1772 charging (see here). Again, the A2Z adapter is apparently the exception. But for other CCS1 adapters, for a North American Tesla you can use AC charging equipment with J1772 plugs only with a proper J1772 adapter (now including the A2Z CCS1/J1772 adapter).

    Don't be misled--CCS1 adapters are NOT necessary for AC charging.



  • CHARGING LOCKS - Adapters designed for use in North American Tesla cars routinely come with a locking notch (at the bottom of the Tesla proprietary [TPC] plug that inserts into the charging port) that will prevent most unintended adapter-removal (i.e., theft) from the port during a charging session. Some manufacturers/suppliers are also addressing the second undesirable issue of having a CCS1 cable-plug/handle prematurely removed from the other end of the adapter during charging. See individual supplier webpages about any features designed to prevent undesired cable removal.

  • INTERNAL DESIGN - Most third-party CCS1 adapters appear to have a relatively simple straight "pass-through" circuitry design (with no or minimal amounts of solid-state circuitry components), as does the OEM Tesla adapter (I believe). The original SETEC adapter--with its battery-powered, CHAdeMO-mimicking software/hardware and 50kW charge rate maximum--is the notable exception.

  • CCS COMPATIBILITY - CCS1 adapters that lack on-board control circuitry (i.e., most/all adapters other than the original SETEC device) require that the car be "CCS-enabled." (In other words, some kind of CCS-allowing control electronics must be present inside either the adapter or the car.) In general, most Teslas from early 2020 to June 2021, and from November 2021 to present are so enabled; but check your car's CCS status before purchasing an adapter.
    • To check CCS status:
      • Center Touchscreen Display.
      • "Software" screen.
      • Choose "Additional Vehicle Information" link.
      • Examine "CCS adapter support" status. Status should appear as either "Enabled" or "Not installed."
    • If "Not installed" (CCS incompatible), owners of Models S, X, 3, and Y can now purchase hardware/software updates from Tesla. There were also clever DIY (do it yourself) workarounds for Models 3 and Y before the factory retrofits became available.
      ...
  • ADVERTISED CHARGING RATES - For several reasons I am no longer reporting charging rate specifications; in part because the new (2022) adapters all claim a maximum charging rate of at least 150kW, up to 250kW (as does the Tesla OEM adapter).

    TMC Forum posts report widely varying charging rates for seemingly all CCS1 adapters (both Tesla and third-party). The reason is apparently that many conditions and factors--e.g., car model, age, and condition; the battery's initial charge level and temperature at the start of a charging session; and additional factors--may affect maximum and ongoing charging rates at any particular time. Clearly the design and condition/health of the particular charging station being used makes a difference (with variation even seen among charging stations of the same company and at particular stations on different days). Also important: exactly when a reading is taken during a charging session. Charging rates rise and fall naturally over the course of a full session (here is one example). When a car starts with a relatively low battery level (say at 20% capacity), a moderately-high start, followed by an aggressive ramp-up, and then a gradual decline is commonplace.

    Taking all this into account, a single charging rate index number may not be a particularly helpful (or honest) decision-making factor. Better, perhaps, would be a series of comparative charge-session graphs with conditions held relatively constant (e.g., 20%-to-80% charge sessions, batteries preconditioned to best operating temperatures, moderate ambient temperatures, use of the same charging station, etc.). Clearly we need someone like Tom Moloughney (YouTube "State of Charge" Channel) to objectively test, side-by-side, all the CCS1 adapter alternatives. In addition to comparative charge rates, I would also be interested in internal design, and build quality. (But I certainly do not want to dissect my own, or indeed any, precious CCS1 adapter to investigate.)

    It is still early days, but one (still untested, afaik) hypothesis is that adapters with straight "pass-through" circuitry designs (including the Tesla OEM device) will all perform in generally similar fashion given the same conditions. If that proves true, the choice of product then comes down to factors other than maximum rate of charge; such as build-quality, safety features, cost (and we are seeing aftermarket sellers actively match or undercut the Tesla adapter price), size and weight, availability, brand loyalty, purchase convenience, customer service, and so forth. I haven't looked inside an adapter, but I imagine that the size/bulk, design, and metallurgical content of electrical contacts and conductors may be important (e.g., for resistance and hence energy loss through heat). This is DC high-voltage fast-charging, so you want beefy components here, people. Consider the analogy of making a purchase choice from among various brands of NEMA 14-50 wall receptacles with different prices and/or construction/designs. They all work, but...(BUY HUBBELL!--or, even better yet, a Tesla or name brand wall connector.)

  • CAVEATS - Information (e.g., prices, descriptions) on some sites can change frequently and unexpectedly. Some initial products and websites are no more. Again, be cautious. After a long wait, adapters (and now CCS hardware upgrades for Models S & X) for are finally available from Tesla in North America. Therefore, many might now argue that the genuine CCS1 adapter (and factory hardware retrofits if needed) from Tesla in North America are the safest course. But will Tesla supplies be consistently adequate to meet demand? We'll see. (As of 03/8/24, Tesla's ongoing stock of CCS1 adapters appears to remain satisfactory.)

  • CURRENCY - Prices listed here are in US dollars.

  • CAUTION - Please note the alert (in red) at the bottom of this post.
    |
  • For drivers whose cars are still incompatible with most CCS1 adapters and who, for whatever reason, prefer not want to use the original SETEC/Lectron CCS1 adapter (below), Tesla/aftermarket CHAdeMO adapters are still sometimes available (used/new) (e.g., on Craig's List), and are are alternative source for DC charging at the remaining stations in North America. At about a maximum of about 50kW, performance is similar to the SETEC/Lectron CCS1 adapter but without the hassle of software update incompatibility. CHAdeMO adapters are somewhat bulky*, however.
    |
    Original Tesla Chademo Adapter (for North America)

    Tesla CHAdeMO Adapter
    |
  • Finally, with recent (2023) inroads by Tesla into having its proprietary charging standard become the so-called North American Charging Standard (NACS)--adopted by more and more manufacturers of electric cars sold in North America (latest count appears to show that almost all NA electric cars will adopt the NACS within a couple of years)--it is easy to envision a time in the near future when virtually all new and many modified NA electric battery-powered vehicles will use the simple AC/DC Tesla standard plugs and ports. If that happens, the CCS1 standard could conceivably become obsolete. For now, though, CCS1 adapters remain a worthy accessory for Tesla drivers who travel extensively.
_____
* @wk057 has a bench-top dissection of a CHAdeMO adapter here, showing all the control circuitry necessary (hence the CHAdeMO adapter's larger size, by the way).


Prior Sources of CCS1 Adapters
(In order of release?)

Source​
Price​
Specific Notes​
Adapter Type​
Availability
(in NA)​
$525​
  • Car must be "CCS-enabled."
  • Availability curtailed by Russia's war against Ukraine.
  • First available for sale in 2020.
"Aftermarket"
Straight "pass-
through" circuitry.​
Currently unavailable.​
$640
$300
  • Unlike other adapters here, charges at a 50kW maximum rate.
  • Requires onboard battery.
  • Runs off firmware that may require frequent updates.
  • Not always compatible with Tesla vehicle updates.
  • Can be used in any model; car need not be CCS-enabled.
  • First available (in North America) in late 2020.
"Aftermarket"
Hardware/software
used to mimic
CHAdeMO technology.​
AVAILABLE.
~$227 (US)​
  • See website (and use Google translate if necessary) for technical specifications.
  • Translation of owner's manual here.
  • Car must be "CCS enabled."
  • Ostensibly for Models 3/Y only (in actuality works with all CCS-enabled models).
  • Includes locking pin to help discourage unintended CCS1 cable-plug detachment.
  • Made for Tesla-Korea by Pegatron of Taiwan.
  • First available (in Korea) in 2021.
  • For a few months in 2022 was available to North American customers through selected Korean shopping/shipping businesses (e.g., Harumio).
"Tesla OEM"
Straight "pass-
through" circuitry.​
AVAILABLE
(in Korea).

Previous CCS1 Adapters

Disclosures and Alerts:
  • In 2022 I purchased two Tesla-Korea CCS1 adapters, along with aftermarket cases for those adapters, from Harumio in South Korea. (I found the process painless and convenient and staff there helpful and professional.) I paid the standard Harumio retail prices. I do not own, nor have I seen or handled, any of the other CCS1 adapters.

  • More importantly, I have not received, nor am I or will I be receiving any payment or compensation in any form whatsoever from any company or individual regarding CCS1 adapters (or for that matter any other Tesla- or auto-related issue). All opinions, right or wrong, offered in this post are my own.

  • The third-party CCS1 adapter market continues to be competitive. Product specifications and information (especially availability and prices) can evolve suddenly and unexpectedly as the market adjusts to recent events. Therefore, information included here may be in error or out-of-date. If you choose to purchase a third-party product, always check with the seller for the latest information and discounts before buying. As with other Tesla-applicable accessories, consumers now have a choice of factory or aftermarket products.
 
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Indeed, I would say that might also be the case for the Lectron, as their photos appear to be photos of the Tesla adapter, but we don't see the actual logo label to 100% confirm that.
The Lectron photos have some differences compared to the Tesla adapter. The edges are slightly convex compared to the real thing, and there are labels for each pin that aren't present on the genuine adapter. So while it's clearly designed to be a clone, they're not just using pictures of the real thing
 
  • Informative
Reactions: tps5352 and srs5694
...there are labels for each pin that aren't present on the genuine adapter...

Good catch. I didn't even notice those little pin labels.

And yes, in the Lectron website first-photo the "copied" adapter sides appear to be "bulging" out a little (more rounded), compared to the straighter/flatter sides of the OEM adapter on the Tesla-Korea site.''

Intriguing.
 
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the only weird thing is that I was never able to reach the charge speed you have. 22 M3LR peaked at 137. I was hoping to reach higher numbers
Did you precondition ?
Sounds like you were connected to a 150kw charger? Most of the 150kw chargers I've seen have a sticker saying 350A on them. With that being said, I normally pull betweeen 122 and 137 kw from them... There were some in California, where the 150kw chargers were 375A. I was able to pull 149kw from them. Most of the time, I didn't even bother with preconditioning... I pulled into two different 350kw chargers at about 17% SoC, and was able to pull 190kW with my Y, without preconditioning. Granted the outside temp was > 100 degrees. Of course results will prob be different in the colder months, but I've only had my adapter since June.
 
I think that employee misled you or is not well informed whatsoever. There are thousands of Tesla delivered every weekend across North America. I am on many FB groups and people don’t have the CCS adapter. The CCS adapter will never come for free as it goes against what Tesla is implementing in North America and for economical reasons as well. If the employee was referring to the J1772 then it comes with the cars. Elon will announce the CCS on Twitter or via Tesla before launching on the website believe me

the employee probably meant the J1772 adapter.

Yup! Tesla confirmed today that it's still just the J1771 adapter. I suspected that was way too good to be true! 🤣
 
Review of hansshow one, 15% off discount too

OK, so now we see that while Hasshow did use pictures of the Tesla official adapter in their ads (with Tesla logos on it) their real product is a very close clone (without the labels.)

Very strangely, they STILL have the photos of the official Tesla on their web site. If they have their own product in hand, odd that they don't photograph it.

For those keen to have the locking pin for 100% safety these may become the go-to aftermarket unit. Though Lectron has an established reputation and may be sourcing the same adapter also at a good price.

In theory, those waiting until later in the year may get the Tesla official one for $220 though.
 
Some additional questions (off the top of my head):
  • Is the adapter-copy made in the same plant or by the same manufacturing company as the original Tesla adapter?

  • Is the copy in any way an infringement of Tesla patents?

  • Are the original and copy equally durable, reliable, and safe? (Do the copy and the original Tesla adapter weigh the same?)

  • Is the proposed copy offered by Lectron the same as or different from the Hansshow product? (We already think we know that the Hansshow and TesPlus copies are the same product offered by Hansshow/Hautopart.)

  • Why the difference in price between Hansshow and TesPLus? Different marketing techniques? (With Hansshow the asking price is more, but there is an attractive "discount." But is there a discount available for TesPLus?

  • Why (oh why) is Tesla delaying the release of its adapter in North America? Seems like it could losing revenue and, more importantly, customer brand loyalty?
 
Some additional questions (off the top of my head):
  • Is the adapter-copy made in the same plant or by the same manufacturing company as the original Tesla adapter?

  • Is the copy in any way an infringement of Tesla patents?

  • Are the original and copy equally durable, reliable, and safe? (Do the copy and the original Tesla adapter weigh the same?)

  • Is the proposed copy offered by Lectron the same as or different from the Hansshow product? (We already think we know that the Hansshow and TesPlus copies are the same product offered by Hansshow/Hautopart.)

  • Why the difference in price between Hansshow and TesPLus? Different marketing techniques? (With Hansshow the asking price is more, but there is an attractive "discount." But is there a discount available for TesPLus?

  • Why (oh why) is Tesla delaying the release of its adapter in North America? Seems like it could losing revenue and, more importantly, customer brand loyalty?
Your last question has me stumped as well. We just went ahead and bought the A2Z adapter. Enough of the wondering when the heck Tesla is going to sell an adapter.

There are now three aftermarket companies building them and selling them as fast as they can. A2Z has already delivered over 4000 of them. The whole thing is weird.
 
One of the key theories is that there are some number of DC Fast CCS stations which don't work well with the Tesla adapter, and Tesla needs to revise their firmware to work better with them. Even when it's not Tesla's fault. Because Tesla will get support calls and roadside assist calls from people who can't get these stations to work, while A2Z probably won't get those calls or if they do can just throw up their hands.

Some people think it's waiting on Tesla making a version of the gen4 charging chip that plugs into the old connector of the gen3 chip, removing the need for a "bundle o'wires." I don't think this is likely as the reason, nor is it likely that they are short of gen4 chips. Some people imagine that Tesla doesn't want to "anger" dog-in-manger owners of cars with gen3 chips who are upset that they can't get what gen4 chip owners can get, who will say "if I can't have it then nobody should." I doubt that.

While A2Z might sell 4,000, Tesla might sell 200,000 or even more, so perhaps they are waiting to be ready at scale.

Some people think it's because Tesla doesn't want competition for SCs, but if that's true, why sell the adapter at all? Tesla wants their car to be the absolute best car to road trip in, and it already is, but the adapter makes it even better. It becomes the car that can charge at any station in the continent. This is pretty important, because when people compare the different brands and hear that they can take road trips in the Tesla but it's a challenge in the others, that's a very common dealbreaker that sells a Tesla. Of course, they already can sell all the Teslas they can make.
 
  • Informative
Reactions: tps5352
OK, so now we see that while Hasshow did use pictures of the Tesla official adapter in their ads (with Tesla logos on it) their real product is a very close clone (without the labels.)

Very strangely, they STILL have the photos of the official Tesla on their web site. If they have their own product in hand, odd that they don't photograph it.

For those keen to have the locking pin for 100% safety these may become the go-to aftermarket unit. Though Lectron has an established reputation and may be sourcing the same adapter also at a good price.

In theory, those waiting until later in the year may get the Tesla official one for $220 though.
Do we know the Tesla one is coming out this year and will be $220?
 
Do we know the Tesla one is coming out this year and will be $220?
No, there was a rumor on this forum that it would come out later this year but outlook not positive.

It will probably be $200-$250 since that is how much the Korean one is selling for without taxes.

I haven't seen any certification documents or anything online so not sure if it is certified in the USA yet..

The Tesla Charging tweet was in October of 2021 and they said it was coming "Soon" and the release in South Korea was delayed by many months and so maybe we will see something in October to December?


For now, I'll still wait to try to get an OEM one either from Tesla or online some how.
 
Well written. The thing that frustrates me is the fact that a small company like A2Z manages to have an adapter that works absolutely everywhere and on every station while Tesla as you stated might have some issues with some charging stations. The whole thing is completely absurd. There are many things that I still can’t put my head on. The fact that they raised the price of the FSD for instance. Regarding the adapter, I think there are reasons beyond our understanding, something way more political than we think. I don’t think it’s related to software, internals or compatibility. Tesla makes money on SC and I think that’s the why we’re looking for.
Actually, I think the A2Z and Tesla would perform identically. I had not heard the A2Z was confirmed to work on every station, and certainly not that it works on stations which don't work with the OEM adapter. It would not make sense for this to happen. Both adapters are dumb devices, though they might differ in their thermal detectors.

if the A2Z is indeed working on all brands of stations then this is not a reason for Tesla to wait. If they both fail at some stations, Tesla might wait to avoid support headaches, while A2Z will not get support headaches because nobody would call them if their adapter doesn't work. Well, almost nobody. If an adapter fails, it's in the car or the station, almost surely not the adapter. The main ways an adapter might fail would be in a bad way (arcing or fire) or by shutting down a charge due to false overheating. The A2Z could, in theory, have a problem if you yank a plug out of it with a broken circuit interrupter but this is actually fairly unlikely based on what I know of the design.

Tesla has to put in place a lot of stuff to sell the number of adapters they will sell, and they are not in any particular hurry with much else to do. Aftermarket companies do nothing but sell their aftermarket parts, and are in a big hurry, because their sales will end the day Tesla starts shipping in bulk. Only an uninformed person would buy the A2Z for $300 when the Tesla genuine is $220. So A2Z needs to sell as many as it can, and at the same time not order too many that it would get stuck with when the Tesla comes out. When the Tesla comes out, A2Z might sell off its extra inventory at not much over cost, which is around $120 plus shipping from China and logistics.
 
Right. When I spoke about the OEM’s adapter not working at every station, I was referring to the theory your heard. Also, A2Z doesn’t equal Tesla. Meaning that if Tesla’s adapter doesn’t work at x charging station it doesn’t mean A2Z’s will not work there. Yes, they are simply pass through adapters, but there are factors to be taken into consideration. Shorter pins, diameter of pins, etc. EVHUB’s adapter was also a pass through adapter and yet it wasn’t working on all charging stations if I recall correctly. Reading Tesla Facebook groups, it seems to be working everywhere. Everyday or so, someone posts pictures or tests with different charging stations all around USA & Canada.

Anyhow, you’re right. A2Z needs to sell as much as possible before Tesla “enters the chat”. I have seen they (A2Z)are starting a new product, that already exists, yes, but they will be selling a reverse adapter. I think if they innovate and bring more products to the market they could coexist with Tesla.

Now the question is when Tesla going to wake up and release their own adapter.
A reverse adapter? To let CCS cars charge at SC? While the physical adapter is possible and will exist at some time, it's not useful unless the driver has a Tesla account and way to activate the SC, and if the SC expects to charge a CCS car and is set up to do so.

In other words, making that work is entirely up to Tesla, and they probably would prefer nobody connect any adapter but their own. Now their adapter probably will be passive and so one could clone it, but if Tesla wishes they could put some circuitry in it so that only their adapter works, and I would not be too surprised if they did. So it seems odd to me they would try a reverse adapter.

And it also seems very odd that their adapter would work on chargers where the Tesla one fails. I mean it's not physically impossible but it strikes me as odd.
 
Is the proposed copy offered by Lectron the same as or different from the Hansshow product? (We already think we know that the Hansshow and TesPlus copies are the same product offered by Hansshow/Hautopart.)
Somebody pointed out that the photos of the Lectron adapter show something that's not quite identical to the Tesla adapter. Namely, the sides of the Lectron adapter bulge slightly, and there are faint markings by the pins in the Lectron adapter that aren't present in the Tesla adapter. The video referenced by @Undisclosed, OTOH, shows an adapter that looks identical to the Tesla adapter, as near as I can see. That said, some of these differences (or lack thereof) could come down to photographic quirks. (Fish-eye lenses can distort objects, for instance; and faint markings could disappear under certain lighting/contrast conditions.) Thus, although I'm not 100% certain, it looks like there may be (at least) two close Chinese clones of Tesla's design on the market now, or soon to be shipped.
Some people think it's waiting on Tesla making a version of the gen4 charging chip that plugs into the old connector of the gen3 chip, removing the need for a "bundle o'wires." I don't think this is likely as the reason, nor is it likely that they are short of gen4 chips
Wasn't there a batch of cars delivered earlier this year that lacked CCS support? If so, then that suggests that shortages of that critical chip may be a current thing.

Also, a pedantic point: The part that must be replaced on older Teslas to enable CCS support is a circuit board, which presumably holds multiple chips, one of which is the chip that enables CCS communication. Older cars (like my 2019 Model 3) used a different board design than the newer ones that support CCS, but there are multiple variants of that newer design, some of which lack the CCS chip. AFAIK, it's this one chip that has been in short supply in the past couple of years. Getting circuit boards build doesn't seem to have been much of a problem, but when supply of that one chip has dried up in the past, Tesla designed variants of its current board that lack the CCS chip. None of this is particularly relevant if you're a non-tech-savvy person who wants to wait for Tesla to release an official upgrade path. I just want to clarify the point because it's important for those who are tech-savvy and who might want to go the DIY route, or who are just curious.
The thing that frustrates me is the fact that a small company like A2Z manages to have an adapter that works absolutely everywhere and on every station while Tesla as you stated might have some issues with some charging stations. The whole thing is completely absurd.
I expect that A2Z's ability to test on a variety of stations is quite limited compared to Tesla's capacity for testing. It's entirely plausible that Tesla is doing extensive testing before releasing their product, whereas A2Z has done much more limited testing. A2Z's adapter might be 98% successful on functioning DC fast chargers and the general public might not hear stories about the 2% of failures, whereas if Tesla is doing more testing, they might be pushing to get that remaining 2% working. My suspicion is that most such failures would be software-related, and buyers of A2Z's adapter would likely benefit from such software updates intended for Tesla's adapter, but there might be some hardware effects, too, relating to how well each adapter mates to the CCS plug or the Tesla socket.

FWIW, I'm not claiming any inside knowledge or profound insight into why Tesla has not yet released its CCS1 adapter to North American markets. I simply think that there are many possible reasons, and we (the general public) lack sufficient evidence to rule out most of the ones that have been suggested. In the end, it doesn't really matter, since the fact is that we're stuck waiting for Tesla to release something, no matter what their reason(s).
I don’t think Tesla would open superchargers to other EV’s at the present time or near future, unless GOV obligates it. That wouldn’t happen in USA tho.
Tesla is already doing this in Europe, and they've said they intend to do so in North America, too. Details for the latter remain murky, but some details have been released or leaked:
  • Elon Musk Tweeted that Tesla would open its Supercharger network to non-Tesla vehicles. I can't find it right now, but a subsequent Tweet specified that this would happen "worldwide."
  • This White House press release notes that "Later this year, Tesla will begin production of new Supercharger equipment that will enable non-Tesla EV drivers in North America to use Tesla Superchargers."
  • The "Drive Tesla Canada" site has reporting on the design of Tesla's V4 Supercharger, which they claim will use something called "Magic Dock" to enable charging both Tesla and CCS vehicles.
AFAIK, the US government is not requiring this; however, the US government is offering subsidies to companies to open DC fast charging stations with CCS support. The speculation (AFAIK, that's all it is right now, at least publicly) is that Tesla wants some of this money, which is one of the reasons it's planning to add CCS support. This is likely to manifest first at new stations, and only later (or maybe never, although that's a long time) at existing stations. In any event, the preponderance of the evidence is that Tesla will open at least some Superchargers in North America to non-Tesla EVs in a matter of months, although the precise timing, how many stations will be so opened, and other details remain murky at best.
 
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