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Tesla/J1772 adapter available from Tesla's website

tomsax

Member
Jun 19, 2008
896
117
Sammamish, WA
Assuming it's the same thing as what I saw at the Bellevue demo last month, it ignores the proximity signal. This means you have to be careful not to unplug the J1772 plug while the car is actively charging (and make sure no one else unplugs it) to avoid arcing across the high voltage contacts. See section 5.4 of the J1772 spec.
 

dsm363

Roadster + Sig Model S
May 17, 2009
18,278
151
Nevada
Assuming it's the same thing as what I saw at the Bellevue demo last month, it ignores the proximity signal. This means you have to be careful not to unplug the J1772 plug while the car is actively charging (and make sure no one else unplugs it) to avoid arcing across the high voltage contacts. See section 5.4 of the J1772 spec.

Thanks. This is why I'm disappointed they only came out with an adapter. You have the right idea with a conversion and I think as many owners as possible need to e-mail Tesla and let them know that. If they want to charge me $1,500 to convert the Roadster to a J1772 plug, I'd be fine with that. I hate having to leave a $750 adapter laying on the ground. Especially since most of the chargers only charge at 30A, you either have to stand next to your car for 6 hours or hope no one steals your adapter.
 

dsm363

Roadster + Sig Model S
May 17, 2009
18,278
151
Nevada
Tesla won't do an official conversion of the inlet on the Roadster due to too many regulatory issues. :-(

I guess that explains it then. I imagine they don't want to put J1772 on the new Roadsters coming out because then all of the older customers would demand it as well. Thanks.
 

vfx

Well-Known Member
Aug 18, 2006
14,790
40
CA CA
I guess that explains it then. I imagine they don't want to put J1772 on the new Roadsters coming out because then all of the older customers would demand it as well. Thanks.

Why not? If they make all new Roadsters with J connectors then we old owners who want the conversion could simply order the part(s).
 

dsm363

Roadster + Sig Model S
May 17, 2009
18,278
151
Nevada
Why not? If they make all new Roadsters with J connectors then we old owners who want the conversion could simply order the part(s).

I'm guessing they think it's easier for them to finish out Roadster production with the old connector and not go through the effort of installing or supporting people who choose to upgrade the port (even with the official parts). I'm not saying I agree or that it makes sense but that's just my guess.
 

felixtb

RsEU502,Sp+14274,XpEUSig4
Jan 14, 2011
684
105
Lausanne, CH
why did they make it so long? as an adapter would it not have been better to have it the same length as the soft top so it could fit straight in the floor well of the trunk space......? then it would not hit the ground either.......... kind of like in their image#1. wonder could one re do it to be this way without too much trouble?

edit: also, sounds dangerous that it ignores the proximity signal...... an accident waiting to happen.........
 
Last edited:

markwj

Moderator, Asia Pacific
Apr 10, 2011
4,584
1,180
Hong Kong
why did they make it so long?

Yeah, if it is an adaptor (as opposed to an extension cord) it should be as short and small as possible. I guess you could loop it and cable-tie together, but that is going to make storage less convenient.

I was also always taught not to loop power cords (especially high current ones), but perhaps that is just an urban legend?
 

doug

Administrator / Head Moderator
Nov 28, 2006
16,873
978
SF Bay Area
Looks like it's finally available. It's expensive at $750 and lays on the floor which isn't good but does support up to 70A

J1772-2_grande.jpg

So they expect you to drape it over the mirror?
 

vfx

Well-Known Member
Aug 18, 2006
14,790
40
CA CA
I'm guessing they think it's easier for them to finish out Roadster production with the old connector and not go through the effort of installing or supporting people who choose to upgrade the port (even with the official parts). I'm not saying I agree or that it makes sense but that's just my guess.

GM and Nissan marketers and even more the salespeople have been taking little jabs at Tesla wherever they could. Now they can add another "not as good" comment" to the Tesla line.

"Tesla decided to come out with their own connector that can only plug into their home chargers". Ours plug into thousands of places as the industry standard.


The spin from competitors will hurt Tesla.
 

stopcrazypp

Well-Known Member
Dec 8, 2007
9,875
4,801
Interesting. Do you know why? Presumably it behaves like the windings on a motor, but is the effect measurable?
It's not the induction (which is negligible). It's the heat not being able to dissipate well when coiled. If you don't have a high enough rated cord, this may cause it to overheat and start a fire. One loop probably isn't much of an issue though.
 
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dpeilow

Moderator
May 23, 2008
9,151
888
Winchester, UK
Also note

Firmware Update Note:
Roadsters with VINs greater than 500 will need a Firmware update in order to use the Tesla J1772 Mobile Connector with Coulomb brand charging stations. Contact Tesla Service to schedule a Firmware update: 1-877-79TESLA (press 9).
 
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