NACS Extension Cable Coming From Tesla

rinsmars · Mar 8, 2024

Extension cable announced by Tesla at: https://www.tesla.com/support/supercharging-other-evs#cable

Does the Supercharger cable reach all EVs?
Most Supercharger cables at NACS Supercharger sites should be able to reach your EV charge port, however, in some cases you might have to park over the line in order to charge comfortably. Avoid parking diagonally to reach the cable and try to obstruct as few charge posts as possible. Charge port locations vary by EV model, which requires cable sharing between adjacent stalls at many sites. Tesla is rapidly deploying our latest V4 Supercharger post which reaches all EVs in the same Supercharger stall. Additionally, we encourage all vehicle manufacturers to standardize charge port locations to the rear driver side or front passenger side.

We are working on an NACS to NACS extension cable, which will be available for purchase in the future.

Mach-Lee · Mar 8, 2024

Hmm. Because it can't be liquid cooled, it probably will only work at reduced speeds. Maybe less than 50 kW. So it won't be a great solution.

I think they should just retrofit the V3 dispensers with longer cables and have them droop down to the ground when hung up. It won't look pretty but it will work a lot better.

4sallypat · Mar 8, 2024

Mach-Lee said:
Hmm. Because it can't be liquid cooled, it probably will only work at reduced speeds. Maybe less than 50 kW. So it won't be a great solution.

I think they should just retrofit the V3 dispensers with longer cables and have them droop down to the ground when hung up. It won't look pretty but it will work a lot better.

Or be very short in length to avoid any heating ??

creedda · Mar 8, 2024

I feel obligated to point out:

https://a2zevshop.com/products/tesla-nacs-dc-supercharger-extension-cord

Coming soon...

macchiaz-o · Mar 8, 2024

Mach-Lee said:
Hmm. Because it can't be liquid cooled, it probably will only work at reduced speeds. Maybe less than 50 kW. So it won't be a great solution.

I was thinking the extension cable would be both very short and smaller gauge than the water cooled counterpart -- thus very thick, heavy, and annoying to work with. I guess we'll see what they come up with... No matter what it is, it will be less than ideal. (See below.)

Mach-Lee said:
I think they should just retrofit the V3 dispensers with longer cables and have them droop down to the ground when hung up. It won't look pretty but it will work a lot better.

Fully agree with you. Though retrofitting 15,000 cables (or whatever the number is) would require a lot of Tesla's $$$.

dbsb3233 · Mar 8, 2024

creedda said:
I feel obligated to point out:

https://a2zevshop.com/products/tesla-nacs-dc-supercharger-extension-cord

Coming soon...

Don't expect it to look like that. That's just a mirror image of their 48A L2 extension. Expect WAY thicker, heavier, and stiffer, like an EA cable.

6 foot may still be tight to reach the other side too.

Mach-Lee · Mar 8, 2024

4sallypat said:
Or be very short in length to avoid any heating ??

Heat produced per length is constant in a cable, so is heat dissipation. So that means it doesn't matter how long or short the cable is, the temperature will be similar regardless. If anything, short cables are hotter because the connections at the ends generate more heat than the cable itself.

creedda said:
I feel obligated to point out:

https://a2zevshop.com/products/tesla-nacs-dc-supercharger-extension-cord

Coming soon...

Yeah I can't take that product seriously. Vaporware until it's demonstrated to work without starting on fire.

The only way I could that working at full speed without liquid cooling is if they allow it to get really hot. In fact, the operating temperature goes up to 85ºC or 185ºF. That means the cable might be that hot while in use, so you better not touch it while charging or have it touching your plastic bumper. I foresee lawsuits from people getting burned by it.

macchiaz-o said:
Fully agree with you. Though retrofitting 15,000 cables (or whatever the number is) would require a lot of Tesla's $$$.

Retrofitting V3s with longer cables seems easier than replacing them all with V4s. So potentially a stop gap until everything is switched to V4, which I see taking 5+ years to complete.

dbsb3233 · Mar 8, 2024

Mach-Lee said:
Retrofitting V3s with longer cables seems easier than replacing them all with V4s. So potentially a stop gap until everything is switched to V4, which I see taking 5+ years to complete.

Even the 9 foot cables from the V4s wouldn't really work as a retrofit on V3s unless they restripe to "move" it to the center of the parking spot (which could make the end charger unusable, depending on lot size). Need 12'+ to reach from the far corner with a thick, stiff cable.

V3 cable cooling ststem might not be spec'd to handle longer cables either.

Mach-Lee · Mar 8, 2024

dbsb3233 said:
Even the 9 foot cables from the V4s wouldn't really work as a retrofit on V3s unless they restripe to "move" it to the center of the parking spot (which could make the end charger unusable, depending on lot size). Need 12'+ to reach from the far corner with a thick, stiff cable.

V3 cable cooling ststem might not be spec'd to handle longer cables either.

True, I guess I was thinking more in terms of us being able to plug in easier with the adapter without having to pull way up over the curb. Another foot or two would be great, but wouldn't solve the two-spot problem.

markboris · Mar 8, 2024

creedda said:
I feel obligated to point out:

https://a2zevshop.com/products/tesla-nacs-dc-supercharger-extension-cord

Coming soon...

I’ve talked with them twice last month about this cable. They started development on it a little over a year ago and expect to have it ready to ship in about two months. As others have said it does not look anything like the photo they show but they are very excited about the release of this product. They were going to start a pre-order however they did that with their NACS adapter and it was a mess. Way too many orders to fill right away and customers were very upset they didn’t get the product when promised. Those adapters are available now and mine shipped today should have it by the end of next week. Excited to try it out. I’ll also be ordering this extension cable when it’s available to try out.

timbop · Mar 8, 2024

Mach-Lee said:
If anything, short cables are hotter because the connections at the ends generate more heat than the cable itself.

Can you explain that? I would think the the connection to the liquid cooled cable would act more like a heat sink than a source of additional heat.

Just asking for a friend

Mach-Lee said:
Yeah I can't take that product seriously. Vaporware until it's demonstrated to work without starting on fire.

Or significantly reducing the current. "it works" is relative ?

Spike · Mar 8, 2024

Mach-Lee said:
I think they should just retrofit the V3 dispensers with longer cables and have them droop down to the ground when hung up. It won't look pretty but it will work a lot better.

That would likely cost Tesla millions to do, not sure they will be up to it.

redgrandam · Mar 8, 2024

markboris said:
I’ve talked with them twice last month about this cable. They started development on it a little over a year ago and expect to have it ready to ship in about two months. As others have said it does not look anything like the photo they show but they are very excited about the release of this product. They were going to start a pre-order however they did that with their NACS adapter and it was a mess. Way too many orders to fill right away and customers were very upset they didn’t get the product when promised. Those adapters are available now and mine shipped today should have it by the end of next week. Excited to try it out. I’ll also be ordering this extension cable when it’s available to try out.

Any mention of what speeds they expect to achieve?

cdiv · Mar 8, 2024

Mach-Lee said:
Hmm. Because it can't be liquid cooled, it probably will only work at reduced speeds. Maybe less than 50 kW. So it won't be a great solution.

v2 Superchargers are 150 kW and their cables aren't liquid cooled. They're just thick.

I suspect if Tesla actually releases an extension, it'll be limited but I'd expect something in the 100-150 range. It'll just be bulky and expensive. And probably a bit too short in an attempt to keep the cost down.

dbsb3233 · Mar 8, 2024

cdiv said:
v2 Superchargers are 150 kW and their cables aren't liquid cooled. They're just thick.

I suspect if Tesla actually releases an extension, it'll be limited but I'd expect something in the 100-150 range. It'll just be bulky and expensive. And probably a bit too short in an attempt to keep the cost down.

And it would somehow have to be able to communicate it's use to the charger so it knows to limit the power.

NACS Extension Cable Coming From Tesla

rinsmars

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Mach-Lee

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4sallypat

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creedda

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macchiaz-o

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dbsb3233

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Mach-Lee

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dbsb3233

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Mach-Lee

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markboris

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timbop

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Spike

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redgrandam

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cdiv

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dbsb3233

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