Adoepner
Posts: 43
Joined: Mon Jul 01, 2019 10:08 am

Tesla to J1772 adapter

Tue Jul 28, 2020 7:40 pm

Hi everyone,

I recently purchased one of these: https://www.amazon.ca/Lectron-Tesla-Charger-J1772-Adapter/dp/B07V7V2QT8

Unfortunately, I am having a fair bit of trouble getting the car to actually charge with it. Have any of you had success with this or similar adapters? Most of the places near me that I would want to hang out while waiting for a charge have Tesla destination chargers.

Andrew

JoeS
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Joined: Thu Dec 15, 2011 5:47 am
Location: Silicon Valley, California

Re: Tesla to J1772 adapter

Tue Jul 28, 2020 9:23 pm

I've been using this one from EVSE Adapters for a few years, primarily with my own HPWC, with no problems.

https://www.evseadapters.com/products/tesla-to-j1772-adapter/

I seem to recall when they first came out that there were compatibility issues because the HPWC could be programmed to defeat this adapter and IIRC there was a discussion of how to reprogram it (had to take it apart). My memory of this is hazy but I thought this was discussed on TMC (and perhaps had something to do with which generation HPWC?) but I couldn't find it now when I looked briefly https://teslamotorsclub.com/tmc/

Perhaps a search of the Leaf or Bolt or one of the other EV forums might shed light on any issues.

Conversely, I can't charge my Tesla using my Mitsu EVSE! :(

Edit 30 July 2020

Correction, what I have is a TeslaTap unit. This Tesla Tap description has a link to an article further describing the interface -

http://www.umc-j1772.com/index.php?route=product/product&product_id=50

I see that there are now many such adapters on the market, with prices lower than what I originally paid for mine.

Here's an InsideEVs article, and in the comments section Tony Williams discusses the HPWC settings for J1772 compatibility. Also depends on the HPWC version.

https://insideevs.com/news/335895/op-ed-charging-a-bolt-ev-at-a-tesla-destination-station-sure-you-can/

Over on one of the Bolt forums was a comment that some adapters can be a sticky fit and need to have the Tesla connector firmly shoved into them in order to work..
EVs: 2 Wht/Blu SE Prem., '13 Tesla MS85, 3 156v CorbinSparrows (2 Li-ion), 24v EcoScoot(LiFePO4)
EV Conv: 156v '86 Ram PU, 144v '65 Saab 96
Hybrids: 48v1kW bike
ICE: '88 Isuzu Trooper. Mothballed: '67 Saab (orig.owner), '76 MBZ L206D RHD RV

Adoepner
Posts: 43
Joined: Mon Jul 01, 2019 10:08 am

Re: Tesla to J1772 adapter

Thu Jul 30, 2020 7:15 pm

Thanks Joe. I’m not getting a lot of support from Lectron to help troubleshoot my unit. I have now tried 3 different wall connectors (following their instructions) with no luck. I bought it on amazon and will be returning it.

My next thought would be to purchase and try a TeslaTap. I’m glad to hear you have one. Any issues with it?

JoeS
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Posts: 3897
Joined: Thu Dec 15, 2011 5:47 am
Location: Silicon Valley, California

Re: Tesla to J1772 adapter

Fri Jul 31, 2020 11:20 am

Sorry to hear that Lectron wasn't responsive.

Regarding any adapter, I'm concerned that the public HPWC installations may have the HPWC configured in such a way as to preclude use of the adapter. I'll look around to see if there are any accessible public HPWCs in the area (almost all wineries with tasting rooms have them) and I'll take my i-MiEV over to them and try out my adapter. Will post here what happens.

Perhaps worth looking around the EV forums as I distinctly recall a post somewhere whereby a non-Tesla EV driver was desperate and actually opened up the HPWC (requires a tamper-proof Torx bit) and changed the settings so he could charge.
EVs: 2 Wht/Blu SE Prem., '13 Tesla MS85, 3 156v CorbinSparrows (2 Li-ion), 24v EcoScoot(LiFePO4)
EV Conv: 156v '86 Ram PU, 144v '65 Saab 96
Hybrids: 48v1kW bike
ICE: '88 Isuzu Trooper. Mothballed: '67 Saab (orig.owner), '76 MBZ L206D RHD RV

JoeS
Site Moderator
Posts: 3897
Joined: Thu Dec 15, 2011 5:47 am
Location: Silicon Valley, California

Re: Tesla to J1772 adapter

Fri Jul 31, 2020 4:33 pm

One more correction: what I have is a Duosida Tesla-->J1772 adapter, and not the TeslaTap. Strangely, my eBay purchase order labels it as TeslaTap, but looking at the connector it says Duosida. Go figure.

Image

OK, ran down to the local high school which has three Tesla HPWCs, in addition to one CHAdeMO/CCS DCFC and 26 J1772s. Here's the i-MiEV successfully charging using the black Tesla HPWC:

Image

The only problem I ran into is that the Tesla plug was very hard to both insert and extract into/outof the adapter. Somebody screwed up, but I think that perhaps the black (not silver) Tesla plug, sitting in the hot sun, had expanded ever-so-slightly. In this climate, why in the world would you not make the casings white? ... grrr, probably the graphics design people overriding the engineers. :twisted:

While we're at it, here are a few photos of the high school parking lot. Behind the blue screen is a huge battery storage system for mitigating the abominable utility demand charges. To the left of the i-MiEV is the DCFC station. You also get a glimpse of some of the massive solar arrays. Funding was supplemented by grants from the Bay Area Air Quality Management District - as I understand it, the school district did the math and it made sense as the local utility's (PG&E) tariffs are awfully high, and I'd be willing to bet that with the school closures they've amortized everything this year (as i presume they can sell the clean kWh at a decent rate) and, for this year at least, have become a profit center! As a side note, very many of the teachers have now switched over to electric cars.

Image

Image

Drove over to a nearby elementary school on the way home for a quick CHAdeMO top-up in the shade- they only have eighteen J1772 stations and one 25kW CCS/CHAdeMO combo. All of the J1772 stations at these schools are remotely controlled and load-balanced with very sophisticated and adaptable algorithms to ensure the cars finish charging at the time needed without overloading the system. Nice app to input one's needs. This photo gives some idea of the charging stations and solar arrays.

Image

Sorry for going off-topic... :( but, dang, I'm proud of our environmental progress here! :mrgreen:
EVs: 2 Wht/Blu SE Prem., '13 Tesla MS85, 3 156v CorbinSparrows (2 Li-ion), 24v EcoScoot(LiFePO4)
EV Conv: 156v '86 Ram PU, 144v '65 Saab 96
Hybrids: 48v1kW bike
ICE: '88 Isuzu Trooper. Mothballed: '67 Saab (orig.owner), '76 MBZ L206D RHD RV

Adoepner
Posts: 43
Joined: Mon Jul 01, 2019 10:08 am

Re: Tesla to J1772 adapter

Sun Aug 02, 2020 5:34 am

That looks like a Tesla Tap. Duosida makes the J1772 handle part.

I actually tried opening up a HPWC near me and dialing back the current to below 40A as per Lectron’s instructions. No luck. I also tried 32A, no luck. It took two different-sized Torx bits.

Thanks for the info. I am more confident now in the Tesla Tap and will proceed to purchase one.

Andrew

JoeS
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Joined: Thu Dec 15, 2011 5:47 am
Location: Silicon Valley, California

Re: Tesla to J1772 adapter

Sun Aug 02, 2020 7:47 am

Adoepner, before ordering I'd poke around and ask questions and see if anyone else had the problem of separating the Tesla plug from this particular adapter, as I was in serious trouble for a short while. The next time I go down there I'll put a tiny dab of silicone grease on the body of the Tesla connector and the insides of the adapter (and a paper towel to clean things up afterwards) to see if that solves the problem. The connector was so difficult to extract that I was already considering alternatives... :geek:
EVs: 2 Wht/Blu SE Prem., '13 Tesla MS85, 3 156v CorbinSparrows (2 Li-ion), 24v EcoScoot(LiFePO4)
EV Conv: 156v '86 Ram PU, 144v '65 Saab 96
Hybrids: 48v1kW bike
ICE: '88 Isuzu Trooper. Mothballed: '67 Saab (orig.owner), '76 MBZ L206D RHD RV

Adoepner
Posts: 43
Joined: Mon Jul 01, 2019 10:08 am

Re: Tesla to J1772 adapter

Sun Aug 02, 2020 7:52 am

Oh no!

JoeS
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Posts: 3897
Joined: Thu Dec 15, 2011 5:47 am
Location: Silicon Valley, California

Re: Tesla to J1772 adapter

Sun Aug 02, 2020 8:18 am

Adoepner wrote:Oh no!
I wouldn't worry about it if you've already ordered it. First off, mine is one of the very first ones made as I bought it when they first became available (my collection of adapters is second-to-none). If there was a problem, I'm sure they would have changed the tooling by now. Although a tight fit, it's been working just fine with my silver Tesla HPWC plug at home. After being homebound for the last five months, it's a good excuse to take a drive and explore a bit and not only go back down to the high school but also up into the hills as there's a winery not far from here that has a Tesla destination charger. I'll try the silicone grease trick and report back.
EVs: 2 Wht/Blu SE Prem., '13 Tesla MS85, 3 156v CorbinSparrows (2 Li-ion), 24v EcoScoot(LiFePO4)
EV Conv: 156v '86 Ram PU, 144v '65 Saab 96
Hybrids: 48v1kW bike
ICE: '88 Isuzu Trooper. Mothballed: '67 Saab (orig.owner), '76 MBZ L206D RHD RV

JoeS
Site Moderator
Posts: 3897
Joined: Thu Dec 15, 2011 5:47 am
Location: Silicon Valley, California

Re: Tesla to J1772 adapter

Mon Aug 03, 2020 6:39 am

Note: HPWC = Tesla High Power Wall Connector = 240vac Tesla EVSE = 240vac Tesla Charging Station = Tesla Destination Charger

OK, took a drive -

Short Version
This adapter works with the three black Tesla HPWCs at the high school. Silicone grease did not help and the adapter was a VERY tight fit with all three Tesla plugs (which were hot, exposed directly to the sun). The HPWC at the winery was inaccessible due to pandemic.

Long Version
As the crow flies the winery is 7.4 miles from my house, and I keep forgetting that the online version of PlugShare shows that whereas the app shows the driving distance, I think ...
Wife was happy to get out of the house and go for an i-MiEV joyride so we left home with about ten bars and first drove down to the high school, put some silicone grease on the body of the HPWC connector and mated the two with difficulty. Plugged in the i-MiEV and after the initial 'whoosh' it started charging normally and then.... the red light lit up on the HPWC and no charging! :shock: This is the same HPWC that worked just fine yesterday! Unplugged the car and with great difficulty separated the adapter from the plug. Moved the car to the HPWC next to it and did the silicone grease coat and plugged in the adapter (it went in a bit easier) and plugged in the car and it worked great. Same for the third HPWC at the high school. Suspect I had not properly mated the first HPWC. Need to read the manual as I think the HPWC has a reset button, in which case I'll drive down there today and reset it. Anyway, left the school with nicely cleaned connectors on their HPWCs.
Drove up heading for the winery on a very circuitous uphill road .... and drove, and drove, and drove.... arrived at the winery with two bars flashing and RR= 6 miles. :o The gate was open, but the elderly gentleman at the gate said that the winery is only open by reservation and we couldn't go on the premises as they are restricting attendance to only 22 people. I pleaded my case about now only wanting to test my adapter on their Tesla HPWC (my wife and I had talked about perhaps purchasing a bottle of wine if they were socially distanced), but no go. All very cordial and we didn't have a problem and appreciated their sticking to their guidelines.
The reason I didn't have a problem is that I knew it was all downhill from there - an example of a situation where an EV newbie would have been totally freaked out. By the time we got down the hill RR was up to 19 miles and we had five bars (I keep telling people how I love it when the fuel gauge goes UP) and we stopped at yet another local school for a quick CHAdeMO boost to 60% and meandered on home. For us it was a pleasant diversion, and the view of Silicon Valley going up to this winery was spectacular, and the first time I've seen the distinctive Apple spaceship from a distance.

Bottom line: hope TeslaTap has modified their mating connector for easier insertion/extraction. I still am not convinced that what I have is a genuine TeslaTap as I bought it on eBay, at the time not realizing that TeslaTap was selling it directly.

Adoepner, if you'd like, send me a PM with your email address and I'll send you a copy of the pertinent pages of my Tesla HPWC manual relating to its configuration setting.
EVs: 2 Wht/Blu SE Prem., '13 Tesla MS85, 3 156v CorbinSparrows (2 Li-ion), 24v EcoScoot(LiFePO4)
EV Conv: 156v '86 Ram PU, 144v '65 Saab 96
Hybrids: 48v1kW bike
ICE: '88 Isuzu Trooper. Mothballed: '67 Saab (orig.owner), '76 MBZ L206D RHD RV

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