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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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It look like the Tesla Ccs1 Adapter Olink Cable Ev Plug Connector - Buy Tesla Adapter/ccs1 To Ccs2 Adapter/tesla Ccs2 Retrofit,Tesla Adapter/tesla Adapter/tesla Ccs2 Retrofit,Tesla Ccs2 Adapter/tesla Adapter/tesla Ccs2 Retrofit Product on Alibaba.com adapter is the same as the A2Z adapter. They show the A2Z as an example of the product. A2Z states they designed the adapter so possibly Olink is the contractor, which is making more of the design and selling them on their own, either because A2Z did not get an exclusive, or because they are violating an exclusive. I have no information on that, this is just speculation. (It's also possible but odd that Olink put an A2Z branded adapter on their page even though they did not make it.)

It seems likely this Olink adapter is also the one being resold by Harumio and possibly others. At $120 quantity 350 there is a healthy margin for Harumio and also for A2Z which may get an even better price as designer. (Though, with all respect to my Canadian countrymen, I am not sure how much design there is in a part with no locking pin, as the form of the CCS1 socket and Tesla connector are already well defined and many Chinese manufacturers already make these. I think the only extra element is some means by which temperature sensors are read by the car, but lacking digital chips I am not sure how this is done.)

If Tesla will indeed ship in December, that is annoying in that it's soon enough to not want to buy an aftermarket unit just 4 months in advance, but also annoying to have to wait 4 months. If Tesla was not going to do it until next year, the aftermarket would be more tempting.
 
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EVSE Adapters is selling them now, with stock in California. To satisfy your curiosity, I've opened up one of these adapters. Where the terminals cross over, there is an insulating material in between. The two little things you see attached to the two thin wires are temperature sensitive switches. One is set to 85 C and the other is set to 90 C. So in an overheating condition, one or both sensors should trip, interrupting the communication line with the charger and thereby pausing charging. Once the adapter cools down again, the sensors will reset and you can use it again.
 

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Heummmm… interesting. The only thing that I think of when comparing the specs of the listing and A2Z’s website is that maybe since A2Z has came up with design (which also maybe means internals) they have a higher end product that actually does 300A. It wouldn’t make sense for them to be on the pictures of the supplier if they had no relationship whatsoever. The supplier has no advantage in showing their logo, it’s a disadvantage even if the price is lower. Harumio only advertised 150A and Alibaba as well. So A2Z may have exclusivity of a higher end product with a higher IP55 grade (compared to IP44). It comon to share markets between suppliers and customers. If it was indeed the same product, A2Z would have reacted by dropping their price as soon as Harumio launched their product.

Here’s a conversation with the supplier and no the product can’t be bought just like that. There are partnerships agreements between them and A2Z.
Now that we have this conversation, we know for certainty that Harum.io has a copy version with totally unknown specs and quality (unsafe) of A2Z’s verified and supported product.
We know for a fact that A2Z indeed worked on this adapter for at least 3 months prior to launch (which is mentioned).
Sorry, it's not clear who you are talking with. Olink is a chinese supplier, who is listed on alibaba (Alibaba is sort of a B2B ebay, not a supplier, so best not to call any adapter an alibaba one.) It appears they are the contract manufacturer of the A2Z product unless we hear otherwise.

Are you saying that Harumio (who is definitely no manufacturer) is not sourcing from Olink, or is sourcing a different adapter with different specs from Olink? Or that A2Z is not sourcing from Olink? Or that Olink sources from somebody else?

Hansshow is a different Chinese source that I think makes or sources a different design, and Tesplus appears to be tied with them or reselling it.
 
EVSE Adapters is selling them now, with stock in California. To satisfy your curiosity, I've opened up one of these adapters. Where the terminals cross over, there is an insulating material in between. The two little things you see attached to the two thin wires are temperature sensitive switches. One is set to 85 C and the other is set to 90 C. So in an overheating condition, one or both sensors should trip, interrupting the communication line with the charger and thereby pausing charging. Once the adapter cools down again, the sensors will reset and you can use it again.

Oops. I previously checked EVSE but just saw the original SETEC/Lectron adapter there. I'll add this new one (that looks like other Chinese-made aftermarket adapters). Thanks!
 
It seems likely this Olink adapter is also the one being resold by Harumio and possibly others. At $120 quantity 350 there is a healthy margin for Harumio and also for A2Z which may get an even better price as designer. (Though, with all respect to my Canadian countrymen, I am not sure how much design there is in a part with no locking pin, as the form of the CCS1 socket and Tesla connector are already well defined and many Chinese manufacturers already make these. I think the only extra element is some means by which temperature sensors are read by the car, but lacking digital chips I am not sure how this is done.)
Option C is that A2Z is a Canadian storefront for Olink. Relatively unknown company, they don't sell any other products on their site. Looks like the only other products they've ever sold (through a different storefront) are LED retrofits. That stuff is almost always low quality Chinese sourced lights. There's no evidence that these guys employee any actual engineers or have done anything novel. Looking up their address on google maps doesn't yield anything that looks more than a repacker/reseller.
 
Option C is that A2Z is a Canadian storefront for Olink. Relatively unknown company, they don't sell any other products on their site. Looks like the only other products they've ever sold (through a different storefront) are LED retrofits. That stuff is almost always low quality Chinese sourced lights. There's no evidence that these guys employee any actual engineers or have done anything novel. Looking up their address on google maps doesn't yield anything that looks more than a repacker/reseller.
Well, that's a pretty strong accusation of fraud, which I would not do without evidence. On their web site they say:
This is not a project we launched overnight, we have been working discreetly on it and using our own funds for months. We have a complete team. Engineers and specialists are working with us making this product and upcoming ones completely safe for the public. Our supplier and factory have been in service for more than two decades bringing their electrical field expertise to our company. We don't cut corners to save money or time. We are not a basement company trying to make a quick buck and disappear. We have a lot of EV products and adapters coming out in the next few months.
It is quite common these days for products to be designed by companies here and manufactured in China, and when you see a phrase like "Designed in Canada" that is usually what it means. The fact that Olink is selling them has various interpretations. They probably pay $100 or so to Olink for them (but must then import them) and make a good profit selling at $300.

It's not clear what elements of a design would be very proprietary. The designs and specs and current loads and temperature limits of the CCS1 and Tesla connectors are already well established. Tesla's locking pin might be proprietary. There is some debate about whether it's a "belt and suspenders" sort of safety, but you definitely would not want somebody to be able to disconnect the CCS plug during a live charge, there could be dangerous arcing.
 
at this point for hesitant people I think wai

I was talking with an Olink representative on the chat, I don’t want to expose name or profile picture as I don’t have permission.

As for your questions, I don’t know. Maybe A2Z simply is in partnership with them, it appears they helped Olink according to what I read from the conversation. Has A2Z been copied? Maybe. By who? Is A2Z sharing the market with Olink? Maybe. We don’t know. Maybe A2Z is behind everything and takes a cut in all sales since they have done the design. People who bought from A2Z have results that match their advertised specs. All I see on Alibaba & Olink’s page is 150A, same goes for Harumio (which they removed). But those are all hypotheses. I don’t know anything, I’m not related to them.
Well, Olink is definitely offering the adapters for sale to other resellers. So if Harum.io is not buying them from Olink, they must have found somebody cheaper, because that price of $120 in quantity is sufficient for Harum.io to resell it for $200 (plus $40 DHL shipping) and so if they are not buying from Olink, I wonder who?
 
Wow, so this conversation has turned from evaluating a product to accusing people of liars and fraud. 👏🏻👏🏻👏🏻

Since the beginning all we talk about is speculations where we haven’t even heard from them. I have seen people in this forum since this aftermarket rush being so rude and disrespectful. At this point, we should run the company for them, no? Have we asked if EVHUB are engineers or simple citizens? What about Harumio? What about other companies? They presented themselves and that’s it. They wrote a team of engineers and that could be as simple as using the services of their suppliers.
EVHub's product is unique. Harumio isn't pretending they're not sourcing it from a 3rd party. Likewise for EVSE Adapters. These guys are claiming they did something new... and I just don't believe it. Especially when they are a little shady about some of the so called features (like the lock noted earlier).
According to their Canadian registration number they have been incorporated since 2018 which is not yesterday. Why thinking negative?
Negative vs realistic, take your pick. A company that just resold crappy LED retrofits doesn't strike me as particularly remarkable. I think most likely situation is they just happened to be the first to market Olink's adapter.

I also cannot find any business registration for "A2Z Canada Inc."


And if you read that blurb on their site a little more carefully, they are not claiming any of the engineers are associated with their company. Only that there are engineers working with them.
 
At this point it almost seems it would be worth getting a group of people together to buy the Huizhou Olink adpater for $139 (plus a share of shipping and distribution, so probably more like $180.) Then wait for Tesla to sell the genuine one for $200 and resell the Chinese one for $100 so you only paid $80 for the ability to have it now rather than whenever Tesla starts selling.

What about applying that idea to a group interested in the Tesla clone CCS1 adapter on Alibaba?* The prices for the "EVbase" adapter copy are attractive, but can customers be sure of Tesla-level quality and safety? How much will these "clones" actually resemble the Tesla (Pegatron of Taiwan) CCS1 adapter? And I read on other TMC posts that slow and expensive overseas shipping costs for some Alibaba products can sometimes negate the advantage of a low initial purchase price.
______
* I don't need one, myself. And hopefully Tesla will make all these questions moot by issuing its adapter in North America at a good price in the near future.
 
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What about applying that idea to a group interested in the Tesla clone CCS1 adapter on Alibaba?* The prices for the "EVbase" adapter copy are attractive, but can customers be sure of Tesla-level quality and safety? How much will these "clones" actually resemble the Tesla (Pegatron of Taiwan) CCS1 adapter? And I read on other TMC posts that slow and expensive overseas shipping costs for some Alibaba products can sometimes negate the advantage of a low initial purchase price.
______
* I don't need one, myself. And hopefully Tesla will make all these questions moot by issuing its adapter in North America at a good price in the near future.
Count me in for the copy of the official adapter. I want to make a comparison with what I already bought and I’m simply curious. Since I have no maintenance to spend on my Model X why not
 
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Who said they claimed they didn’t buy from a 3rd party? Did they say it? They never claimed it’s made in Canada.

okay and?

You seem wayyyyyy too aggressive to be an impartial customer giving an honest opinion. Seems to me you’re more like one of their competitors. And the more I think about it, the more it makes sense. You could be anyone.


Then you have your answer, they never claimed anything. YOU are the one making claims and assuming things.

I’m done with you. This arguing means nothing and brings us nowhere. Your speech doesn’t make any sense and looks more like hate than anything else.

Have yourself a wonderful night 😁
Nah, I bought a real Tesla adapter through Tesla directly and had it sent to be via Delivered. I'm a physician and not in the business of selling automotive parts.

You on the other hand... joined this forum and basically have only played up A2Z's adapter and attacked any company selling the same adapter and anyone who comes to the conclusion that A2Z didn't do anything special. Then you post "proof" that they engineered it themselves and harum.io somehow cloned it by posting a random text conversation which could be with anyone.

Occam's razor, simplest explanation is usually correct. Chinese company decided to start making an adapter. A few vendors decided to contract with them and sell said adapter. And as is common in this world, some vendors give early buyers either a discount or a free product in exchange for good reviews.
 
EVSE Adapters is selling them now, with stock in California. To satisfy your curiosity, I've opened up one of these adapters. Where the terminals cross over, there is an insulating material in between. The two little things you see attached to the two thin wires are temperature sensitive switches. One is set to 85 C and the other is set to 90 C. So in an overheating condition, one or both sensors should trip, interrupting the communication line with the charger and thereby pausing charging. Once the adapter cools down again, the sensors will reset and you can use it again.
I realize this is commonplace in these adapters but can someone remind me why the crossover design of the DC pins?
 
Can someone who understands electricity better than I do explain what the possible risks are in using a non-Tesla adapter? What could go wrong? What damage could be done to the car? And how can you check the adapter to gauge the level of risk in using it?
 
Can someone who understands electricity better than I do explain what the possible risks are in using a non-Tesla adapter? What could go wrong? What damage could be done to the car? And how can you check the adapter to gauge the level of risk in using it?
The possible issues are with an adapter that isn't designed to allow high currents to flow through and/or made of materials that are not resistant to higher temperatures. If the crimps that connect the bus bars to the pins are not done correctly, there could be arcing or higher temperatures that could melt the plastic and even the metal in the adapter, the charge port, or the charger plug. If the bus bars or wires are not of a big enough gauge to safely handle the high currents they will get hot and cause the same issues. If the plastic in the adapter isn't designed to handle higher temperatures it can melt a cause signal wires to short with power wires. I'm not sure if this shorting could cause equipment failure or risk of shock because the high voltage components of the Tesla are isolated from everything else.
 
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… If the plastic in the adapter isn't designed to handle higher temperatures it can melt a cause signal wires to short with power wires…
Think that since adapter plastic is inside the Tesla charging port that the Tesla charging port plastic could also melt with its corresponding wiring and electronics? Tesla likely has a temperature sensor to disconnect voltage once it recognizes the fire. I bet the Tesla parts would not continue to burn but you might end up repainting the panel when you replace that charge port.
 
Can someone who understands electricity better than I do explain what the possible risks are in using a non-Tesla adapter? What could go wrong? What damage could be done to the car? And how can you check the adapter to gauge the level of risk in using it?

The possible issues are with an adapter...

I am not an electrical expert, but a "monster under the bed" warning from a TMCer in New Zealand about "suicide adapters" really stuck in my mind. I read that adapters that lack a safety lock of some kind can cause electrical "arcing" in some instances which could damage the car's charge port. Not commonplace, but scary to consider.

Is there a monster under the bed?

How to "check?" Probably by performing "due diligence" before purchasing. In this case by critically researching the issue, reading, asking questions and educating yourself (as you have already started doing--good job, btw). Some people have purchased adapters and physically taken them apart to compare quality and design. That is not a reasonable solution for most of us. A conservative tactic is to stick solely to Tesla products. (I do that.) Fine, where possible. But in this case, with Tesla dragging its feet about officially releasing the CCS1 adapter in North America, I can totally understand customer impatience. and the siren's song allure of aftermarket products for those who really need to access CCS1 charge stations. And now, with Superchargers apparently open to non-Teslas, (see also "not a tesla app" article) will lines and charging delays become more common?

Gustav Wertheimer - The Kiss of the Siren (1882)

Based on scattered comments on TMC, I sense that Tesla may be preparing, finally, to release its adapter in North America--maybe later this year. But for those that need CCS charging now, that prediction is probably not particularly reassuring.
 
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