I have a Tesla wall charger with adapter 80 amp how can I check to see what it is delivering?

[Cosmacelf]

Do you know if your Tesla Wall Connector is a generation 1 or generation 2? I dimly remember some compatibility problems with gen 1 wall connectors at 80 amps. The J1772 standard actually didn't go all the way up to 80 amps when Tesla made the gen 1 wall connector IIRC.

Sponsored

 

[MrPharmer2012]

I'd be suspicious of the adapter. If it's as poorly made as the other $89 offering I'm aware of (the Hansshow adapter) it may well be heating up and limiting your charge rate.

Which Tesla Wall Connector do you have? 1st or 2nd generation? The 1st generation units do not play nice with non-Tesla vehicles at high settings - they don't work at all with our trucks if the charger is set to 80A and I have seen very low charge rates with the charger dialed back to 72A. The 2nd gen Tesla chargers seem to work well if you use a quality adapter.

I don't know what gen it is, is there a place to look without taking it apart? it was installed when I bought my first model S in 2016, is there a different model adapter that you would recommend?

 

[Cosmacelf]

I'd be suspicious of the adapter. If it's as poorly made as the other $89 offering I'm aware of (the Hansshow adapter) it may well be heating up and limiting your charge rate.

Which Tesla Wall Connector do you have? 1st or 2nd generation? The 1st generation units do not play nice with non-Tesla vehicles at high settings - they don't work at all with our trucks if the charger is set to 80A and I have seen very low charge rates with the charger dialed back to 72A. The 2nd gen Tesla chargers seem to work well if you use a quality adapter.

As may be, but there are Amazon reviews showing people happy with it at 80 amps.

But your gen 1/2 question about the Tesla Wall Connector is spot on, I think.

 

[Cosmacelf]

I don't know what gen it is, is there a place to look without taking it apart? it was installed when I bought my first model S in 2016, is there a different model adapter that you would recommend?

OK, I believe my Tesla Wall Connector is a Gen 1 - it has a label on the right side along with a red reset button. Part number 1011831-00-D. What does yours have?

 

[TaxmanHog]

I completely overlooked the fact that you are charging to 100% the rate of charge from 90 to 100% slows tremendously, hence the computations based on time imply a much slower rate, because energy was trickling in at an intentionally slower pace toward the end of the curve.

This was a sample of a test I did for another forum member, I derated my FCSP from 80 amp to 48 amp to simulate what the charging curve might look like charging to 100%

Starting here at 89% the rate ramps up to 11.373 KW quickly

Reaching the 95% SOC a brief slow down or I clicked charge to 100%

The time it took to get 4% more SOC

The 37 minutes time to get to 100%

 

[MrPharmer2012]

OK, I believe my Tesla Wall Connector is a Gen 1 - it has a label on the right side along with a red reset button. Part number 1011831-00-D. What does yours have?

I will have to check later when I get home from work, thanks for letting me know where to look

 

[Cosmacelf]

I will have to check later when I get home from work, thanks for letting me know where to look

Yeah, and I believe the gen 2 Wall Connectors have a holster on the right side, so that's an obvious difference between the two.

 

[MrPharmer2012]

I completely overlooked the fact that you are charging to 100% the rate of charge from 90 to 100% slows tremendously, hence the computations based on time imply a much slower rate, because energy was trickling in at an intentionally slower pace toward the end of the curve.

This was a sample of a test I did for another forum member, I derated my FCSP from 80 amp to 48 amp to simulate what the charging curve might look like charging to 100%

Starting here at 89% the rate ramps up to 11.373 KW quickly

Reaching the 95% SOC a brief slow down or I clicked charge to 100%

The time it took to get 4% more SOC

The 37 minutes time to get to 100%

What are you using to get those graphs? Is that part of your home energy management solar system or something showing where electricity goes? The dealer told me that ford has the digital screen pre programmed to not allow the battery to ever get to 100% the screen says 100% but battery has left over cells, they told me the same for when it hits 0% that it still has some left ford programmed this way to avoid battery damage etc. is that not the case? they said unlike with tesla you dont want to set to 100% often they said ford you can because software keeps it from actually going to the actual full amount on board.

 

[Cosmacelf]

Tesla Tap has been making adapters from the Roadster days (like 2010), so they know a thing or two about adapters. If you read the specs for their normal 80A J1772 adapter, it specifically says it is compatible with the v2 or v3 of the Wall Connector, not V1.

I gave a call to the Tesla Tap number, and talked to a guy there (company owner?) who said he has a special Lightning version of his Tesla Tap adapter that will work with the Lightning at 80A. Indeed, he said he has a V1 Tesla Wall Connector AND a Lightning. And his adapter works.

So, here it is: https://www.umc-j1772.com/index.php?route=product/product&product_id=174

A bit pricey, but would be cheaper than any other option if you don't mind sharing a charger between two cars.

 

[TaxmanHog]

What are you using to get those graphs? Is that part of your home energy management solar system or something showing where electricity goes?

I'm using this to monitor the 100 amp circuit feeding my 80amp FCSP.

It's capable of monitoring so much more but I'm using its primary feeder loops to clamp over to conductors to my charging station, normally you would use them for the primary feed into the load center, then use smaller loops for 15, 20, 30 amps circuits throughout your home electrical system.

Ford charging station will reach 100% SOC, it just takes a LONG time.

https://shop.emporiaenergy.com/products/gen-2-emporia-vue-whole-home-energy-monitor

 

[tls]

I have a TeslaTap adapter, which works well. When the Lightning first came on the market he insisted that his standard 80A adapter would charge the Lightning at 80A on all Gen1 and Gen2 wall connectors. Several of us here who tried it on the Gen1 had to tell him otherwise. The Gen1 puts out a rather...approximate...pilot signal at the higher settings and the Lightning won't accept it. Maybe he has one unit at home that's better than the others users here tried.

I have a total of 4 Gen2 units in 3 locations and the Lightning charges at 80A with the 80A TeslaTap or a QC adapter (no longer offered) on all of them. The Hansshow adapter filled up with water in a light rain and shorted, and they refused to provide support, which kind of soured me on the budget adapters, to say the least!

 

[Cosmacelf]

I have a TeslaTap adapter, which works well. When the Lightning first came on the market he insisted that his standard 80A adapter would charge the Lightning at 80A on all Gen1 and Gen2 wall connectors. Several of us here who tried it on the Gen1 had to tell him otherwise. The Gen1 puts out a rather...approximate...pilot signal at the higher settings and the Lightning won't accept it. Maybe he has one unit at home that's better than the others users here tried.

I have a total of 4 Gen2 units in 3 locations and the Lightning charges at 80A with the 80A TeslaTap or a QC adapter (no longer offered) on all of them. The Hansshow adapter filled up with water in a light rain and shorted, and they refused to provide support, which kind of soured me on the budget adapters, to say the least!

So you suspect the Gen1 is hit or miss with the Lightning then? That would be my guess too.

 

[tls]

Here is a thread from very early on in the history of Lightning that has more info. @FlasherZ diagnoses the problem with the Gen1 units and indicates his works at 72A - mine usually does not.

Note that just a few messages down, the TeslaTap guy indicates that the non-Lightning TeslaTap Mini is fine for use at 80A and the "Lightning" version differs only in the size of the pins! I can't see how that could fix the issue FlasherZ describes.

 

[Cosmacelf]

Here is a thread from very early on in the history of Lightning that has more info. @FlasherZ diagnoses the problem with the Gen1 units and indicates his works at 72A - mine usually does not.

Note that just a few messages down, the TeslaTap guy indicates that the non-Lightning TeslaTap Mini is fine for use at 80A and the "Lightning" version differs only in the size of the pins! I can't see how that could fix the issue FlasherZ describes.

Yeah, and FlasherZ talked about setting the Wall Connector down to 72A/90A breaker. But My HPWC (gen 1 Wall Connector) does not have a 72A/90A setting. For mine, all I can set is 64A/80A or 80A/100A

At any rate, I really do think the Gen 1 Wall Connectors are bad news at 80A with anything other than a Tesla.

 

[tls]

Wow, I never knew there were two versions ("A/B" and "C/D") of the Gen1 wall connector. I've never seen one of the ones without the 72A switch setting. I wonder what other differences they have?

Sponsored