Computerizer
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Delivery Date: 19 Dec 2012
Location: Bellingham, WA, US

Roadster HPWC adapter?

Tue Jul 16, 2013 10:26 pm

Is it possible to buy or make an adapter so that I could connect my LEAFs to a Tesla Roadster HPWC? There's one in a PERFECT place, which is never in use (since basically nobody has a Roadster), that would be really nice if I could plug in to from time to time.
Tyrel Haveman
Current: 2013 LEAF SL (Brilliant Silver), 2017 Bolt LT (Red)
Previous: 2016 Kia Soul EV+ (Titanium Grey); 2013 LEAF SV (Blue Ocean), 2012 LEAF SL (Glacier Pearl)
100% Solar PV (12.125 kW ground-mount)
Bellingham, WA

arnolddeleon
Posts: 125
Joined: Wed Apr 21, 2010 3:58 pm
Delivery Date: 25 Jun 2011
Leaf Number: 4147
Location: Cupertino, CA

Re: Roadster HPWC adapter?

Tue Jul 16, 2013 10:27 pm

The signalling is compatible. Getting the connectors is the challenge.

arnold

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ebill3
Posts: 1400
Joined: Fri May 27, 2011 1:23 pm
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Leaf Number: 7964
Location: Puyallup WA

Re: Roadster HPWC adapter?

Tue Jul 16, 2013 11:58 pm

At the events center?

I believe the Amphenol connector is the big problem. Tesla markets an adapter to use the Roadster HPC with the Tesla Model S - $650.00.
All electric - red LEAF, green Tesla S. No ICE.

fooljoe
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Location: Seal Beach, CA
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Re: Roadster HPWC adapter?

Wed Jul 17, 2013 10:14 am

Basically you'd have to chop off the Tesla "nozzle" and put on a J-plug. The only way to make an adapter would be to use a Tesla inlet, and Tesla is not willing to make these available for sale. Granted, I've looked into this more trying to find a Model S inlet, so maybe you'd have a bit more luck trying to get a Roadster inlet. Your best bet would probably be to salvage one from a totaled Roadster, if you can find one.
RavCharge.com | 2012 Rav4-EV | 2011 Leaf SL w/QC batt replaced 11/20/15 | Clipper Creek CS-60 | EVSEupgraded 2013 Leaf EVSE | 3.84kw PV

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TonyWilliams
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Re: Roadster HPWC adapter?

Wed Jul 17, 2013 11:13 am

First, the Roadster uses an "HPC" which is 208-240 volts at 70 amp Clipper Creek EVSE, and the Tesla Model S uses a "HPWC" which is made in house and is 208-240v at 80 amps.

I built one with an HPC to Model S plug adapter. I bought this new but unused for $500. The J1772 handle (I used a Yazaki premium quality one) probably seeks for about $200+ each.

Works great at 40 amps in the Rav4 EV. I would be nervous at 70-80 amps with the J1772.

Computerizer
Posts: 190
Joined: Fri Dec 21, 2012 2:13 pm
Delivery Date: 19 Dec 2012
Location: Bellingham, WA, US

Re: Roadster HPWC adapter?

Wed Jul 17, 2013 11:24 am

TonyWilliams wrote:I would be nervous at 70-80 amps with the J1772.
Doesn't the J1772 protocol have amperage negotiation between the car and the EVSE, so it would only supply what the car asks for?

- Tyrel
Tyrel Haveman
Current: 2013 LEAF SL (Brilliant Silver), 2017 Bolt LT (Red)
Previous: 2016 Kia Soul EV+ (Titanium Grey); 2013 LEAF SV (Blue Ocean), 2012 LEAF SL (Glacier Pearl)
100% Solar PV (12.125 kW ground-mount)
Bellingham, WA

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TonyWilliams
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Re: Roadster HPWC adapter?

Wed Jul 17, 2013 11:25 am

Computerizer wrote:
TonyWilliams wrote:I would be nervous at 70-80 amps with the J1772.
Doesn't the J1772 protocol have amperage negotiation between the car and the EVSE, so it would only supply what the car asks for?

- Tyrel
Yes, it does. What does that have to do with operating at 70-80 amps making me nervous?

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LEAFer
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Delivery Date: 19 Jan 2011
Leaf Number: 000215
Location: Sacramento Area

Re: Roadster HPWC adapter?

Wed Jul 17, 2013 3:20 pm

Computerizer wrote:Doesn't the J1772 protocol have amperage negotiation between the car and the EVSE, so it would only supply what the car asks for?

- Tyrel
You have it reversed. The car does *not* ask for a particular amount of amps. The EVSE tells the car how many amps it can supply and the car may not draw more than that number of amps. The car ultimately decides how much current to draw equal to or less than the maximum it is told. This "decision" is influenced by a number of factors, including (but not limited to) user adjustment (available in very few EVs), temperature or SOC limits, OBC (on-board charger) limits (e.g. 3.3kW), supply voltage, etc.
2011 Silver SL+QC [Mfg: 11/2010] 36mo/15k LEASE
06Jun2013 Status [28.5 months][34,173 miles][11 bars]
Lost CapacityBar 6/6/13 @34,173 miles while in LEAF Battery Monitor: 83.41%, 71.4F (avg); cool overnight;

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