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GM follows Ford with NACS Tesla charge port adoption -- time to ditch CCS1 (at least the physcial design)

bn8959

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Does NACS have the physical design properties to support 800v? Eg enough insulation and spacing to prevent arcing at double the voltage? Could make it a non-starter for Porsche.
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Scandinavian

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but access was an issue - so the same plug standard accomplished little until Tesla decided to open the network to non-Tesla's - and only recently has Tesla "allowed" non-Tesla's to charge at their sites - and now that it's opening up I think it's a good thing - it also shows that the cars are already "mostly" compatible
where have you got that info from?? There has never been any problems with access for Tesla cars with CCS or now for other cars to access the open for all Tesla SuC. There were no technical issues at all. Only admin. Tesla wanted to have an agreement for others to use their network, which did not happen. So whatever You think of Musk, he is a businessman. And he has stated all along that he is willing to open the Tesla SuC in principle.
 

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or1

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We have a lot of Americans here but curious what the experience is in Europe? Isn’t CCS the standard over there? What makes their network tick vs the US? Is it the actual technology? Or is EA just poorly managed?
Norwegian here, with some experience traveling the European continent. We have CCS2, which in my experience works rather well. The physical differences to CCS1 may be what makes it work better here than in US. But I think, as has been said by some of you Americans, that the operating companies' competence, attention and procedures are more important reasons why we are better off.

As for Tesla, yes their supercharger network is great. They also use CCS2 here (with double cables on some charging stalls to accomodate old Model S and X). And as far as I know, allowing other car makes to use them is just a matter of Tesla registering in their system that non-Tesla owners with the Tesla app may start charging from that app. No physical modification at all, neither on charger nor on car.
 

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Does NACS have the physical design properties to support 800v? Eg enough insulation and spacing to prevent arcing at double the voltage? Could make it a non-starter for Porsche.
Yes it is rated for over 800V.
 


whitex

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my God Musk is a terrible speaker - I hate watching him - honestly I do. I get it.

but ultimately we can separate the good ideas and technology progress from the flawed humans the push them…I have a lot of experience with this in my past career - I'm focusing on the pure technical fact that NACS does not completely suck as a design - this is a win going forward, but unfortunately carry's "musk" with it - but when I'm charging somewhere with 64 stalls and it actually works I'll credit Musk that his "sh*t" works, while the EA station across the street with 3 stalls has 2 'offline' for no known reason…and I'll shake my head and {sigh} as I drive past the EA station in my Taycan charged to 92% SOC by a functional supercharger site while EA couldn't keep their POS (Point of Sale) system online for more than few minutes at a time…or even know their station was offline - or realize that the 75 year old grandmother in her Macan EV doesn't have the physical dexterity to actually handle the CCS cable to insert it into the CCS charge port…but if she did the latch would be broken and the session wouldn't start anyways - but it would take her 20-40 minutes on the phone with an oh so polite EA CS representative that will eventually tell her that rebooting the stations doesn't seem to be fixing the problem so they will note a trouble ticket but have no suggestion as to how she should now charge her Macan which is at 12% battery…and so she's stranded with no way to charge her vehicle because EA sucks.

and the "funny" in the paragraph above is that we all know it's true - and yet seem to want to "stick with it" rather than give Musk "the win" in this case…

I still say "read the room" - it speaks volumes that it came to this with Ford & GM - they had no choice, which honestly means - we have no choice - the question for this Forum is will Porsche realize they have no choice or bury their heads in the sand on this topic.
Porsche will switch once the rest of the US EV's do and EA gives in - remember EA was funded by VW, so they have a vested interest. If Porsche does move, the question is whether they will provide an adapter for older cars that is well integrated with Porsche, or just drop those older cars to use 3rd party adapter which will be available by then.
 
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tutis

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There's nothing that says Porsche couldn't offer a retrofit of the NACS plug on TayCan, perhaps for ~$2k.

I mean it's just the socket that needs changing, possibly a reprogram of the module that communicates through the plug for authentication etc.
 

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There's nothing that says Porsche couldn't offer a retrofit of the NACS plug on TayCan, perhaps for ~$2k.

I mean it's just the socket that needs changing, possibly a reprogram of the module that communicates through the plug for authentication etc.
And lose AC charging on that side you mean? Or is the idea that the NACS might actually fit in the place of only the DC portion of the CCS socket?

Because CCS has separate contacts for AC (where it becomes "just J1772") and for DC, and there are indeed different cables connected to that socket internally.
 


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There's nothing that says Porsche couldn't offer a retrofit of the NACS plug on TayCan, perhaps for ~$2k.

I mean it's just the socket that needs changing, possibly a reprogram of the module that communicates through the plug for authentication etc.
It is not just a socket. AC/DC pins now need to be multiplexed vs. being separate on the CCS connector. Way more retrofitting than just a connector to the same wires and new firmware for communications.
 

tutis

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And lose AC charging on that side you mean? Or is the idea that the NACS might actually fit in the place of only the DC portion of the CCS socket?

Because CCS has separate contacts for AC (where it becomes "just J1772") and for DC, and there are indeed different cables connected to that socket internally.
it could be either way, but if it replaces the AC only side they probably need a separate switch installed that prevents DC charging from both plugs at the same time, or maybe just like they do now with the charging disabled if both flaps are open.

there are plenty of options really. And fundamentally it’s just a new socket with some authentication mechanism which for all I know could be NFC driven (there’s some wireless communication going on as Tesla cars open their flap when you approach with a Tesla SC cable).

Porsche Wouldn’t need to redevelop the whole car to make this happen.
 

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They'll probably adapt to the market just like they're doing now. US Taycans don't have the same connectors as Europe Taycans. They'll probably come up with a half baked solution for the US market to keep selling cars. That is if NACS really takes over.

I'm still not convinced tbh. There was a reason why the EU went with CCS2 and why so much hassle with cooling cables etc. Can't be just "We want to make a big bulky plug albeit we know that an izzy tiny uncooled, passive, vacuum cleaner like, plug will do the job the same".
 

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Not sure if it was pointed out in this thread already but the timeline for GM is to first release a NACS adapter in spring of ‘24 followed by native NACS vehicles in 2025. This is different to Fords statement where their adapter isn’t expected until the start of 2025 alongside their next gen EVs. *Edit: read this wrong, Ford also having an adapter in spring 24.*

Here’s to hoping these adapters become widespread for the rest of us sooner. It’s hard imagining Tesla having brand specific adapters if NACS adoption is their goal.
 
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it could be either way, but if it replaces the AC only side they probably need a separate switch installed that prevents DC charging from both plugs at the same time, or maybe just like they do now with the charging disabled if both flaps are open.

there are plenty of options really. And fundamentally it’s just a new socket with some authentication mechanism which for all I know could be NFC driven (there’s some wireless communication going on as Tesla cars open their flap when you approach with a Tesla SC cable).

Porsche Wouldn’t need to redevelop the whole car to make this happen.
I feel like there's about a 1% chance Porsche tries to retrofit NACS onto already delivered cars when you could probably buy 5 adapters for the same price as whatever a retrofit would cost, and not have to risk mechanics mucking about under the hood. Heck, if you replaced the CCS side with NACS (which seems more likely, since Porsche already chose not to put DCFC on both sides), you'd even still need an adapter for CCS charging anyways.
 
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daveo4EV

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There's nothing that says Porsche couldn't offer a retrofit of the NACS plug on TayCan, perhaps for ~$2k.

I mean it's just the socket that needs changing, possibly a reprogram of the module that communicates through the plug for authentication etc.
it's much more than that - since NACS can route AC/DC power over the same two wire it's a farily significant change to the harnesses from the charging ports to the onboard chargers - no retrofit will be made available - older cars will be adapter only - newer cars would be NACS at some future point - or they could simply be adapter indefinately.
 
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daveo4EV

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I feel like there's about a 1% chance Porsche tries to retrofit NACS onto already delivered cars when you could probably buy 5 adapters for the same price as whatever a retrofit would cost, and not have to risk mechanics mucking about under the hood. Heck, if you replaced the CCS side with NACS (which seems more likely, since Porsche already chose not to put DCFC on both sides), you'd even still need an adapter for CCS charging anyways.
less than zero chance and at $150/hour mechanic's labor more than 5 adapter - it's $5000 cost to swap the 11 kW on board charger for the 19.2 kW onboard charger retrofit - and that doesn't include swapping the "charging ports" or wiring differences that NACS requires for the onboard stuff…let's say at least $7500 _IF_ they had the parts/redesign ready - probably closer to $10-$12k to retrofit an existing Taycan - not going to happen.

a CCS/NACS adatper is $200 retail - that's 37 adapters for the cost of a $7500 NACS retrofit - also NACS is NOT the story here - supercharger access is the story - NACS is a side show and isn't required - adapters will be required, but NACS remains optional for those that don't want to move…

the path here is same as GM/Ford - adapters for "legacy" vehicle's, NACS at some point in the future - or maybe never - an adapter could carry the functional requirement for decades…but would have a "bad" look - but be 100% functional…
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