Tesla Magic dock adaptor slower?

[RickLightning]

The adapter is passive. It doesn't communicate with the truck. If your charge port was heating up enough to set a code, that is a little concerning. I wonder how hot the adapter was.

From the A2Z website:

For added safety, the A2Z Typhoon Plug incorporates two temperature sensor switches. The first sensor derates the charging process upon reaching a certain temperature, while the second sensor halts charging, the temperature are strategically placed within the adapter. Charging can resume once the temperature normalizes and the adapter is reconnected. It's worth noting that during real-life testing, thermal shutdown was never reached.

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[potato]

From the A2Z website:

For added safety, the A2Z Typhoon Plug incorporates two temperature sensor switches. The first sensor derates the charging process upon reaching a certain temperature, while the second sensor halts charging, the temperature are strategically placed within the adapter. Charging can resume once the temperature normalizes and the adapter is reconnected. It's worth noting that during real-life testing, thermal shutdown was never reached.

But if he saw a code in Forscan, that means the truck got hot.

 

[ronscantlin]

But if he saw a code in Forscan, that means the truck got hot.

I wasn’t using the a2z adaptors anyways. It was the Tesla magic dock adaptor.

 

[RickLightning]

I wasn’t using the a2z adaptors anyways. It was the Tesla magic dock adaptor.

All quality adapters have technology like A2Z...

 

[ronscantlin]

All quality adapters have technology like A2Z...

I’m wondering if stressing the cable (short Tesla cable), in turn stressing the truck to adaptor coupling, creates poor physical connection and hot contacts?

 

[RickLightning]

I’m wondering if stressing the cable (short Tesla cable), in turn stressing the truck to adaptor coupling, creates poor physical connection and hot contacts?

I'm confused. Quality adapters have features to not overheat. Features communicate back to the charger, "I'm f'in hot!". Charger slows down.

 

[ronscantlin]

I'm confused. Quality adapters have features to not overheat. Features communicate back to the charger, "I'm f'in hot!". Charger slows down.

Not sure what’s confusing. I’m reiterating your point. If the contracts are getting hot, that will trigger the thermal sensor and slow the charge, right?

 

[potato]

All quality adapters have technology like A2Z...

I like A2Z but I'm skeptical of their claim that they can derate the charge. Unless their adapter includes active electronics doing MITM on the PLC communications, all their thermal switches can do is open the circuit on the signalling pins, stopping the charge entirely. I really don't see how they can "derate" the adapter.

Teardowns on other adapters have shown just that, thermal switches inline in the control wires that can only stop charging, not derate. I'd love to see a teardown of the Typhoon Pro.

The truck can derate, of course, if it detects a high temperature, but there's no communication between the truck and the adapter. So it would have to get hot enough for the truck to detect it on its own.

Since we're talking about Magic Docks, Tesla could be doing their own magic and have some way to communicate between their adapter and charging cabinet I suppose.

 

[Zprime29]

I like A2Z but I'm skeptical of their claim that they can derate the charge. Unless their adapter includes active electronics doing MITM on the PLC communications, all their thermal switches can do is open the circuit on the signalling pins, stopping the charge entirely. I really don't see how they can "derate" the adapter.

Teardowns on other adapters have shown just that, thermal switches inline in the control wires that can only stop charging, not derate. I'd love to see a teardown of the Typhoon Pro.

The truck can derate, of course, if it detects a high temperature, but there's no communication between the truck and the adapter. So it would have to get hot enough for the truck to detect it on its own.

Since we're talking about Magic Docks, Tesla could be doing their own magic and have some way to communicate between their adapter and charging cabinet I suppose.

All adapters that intend to be UL listed can derate.

 

[K6CCC]

Charge rates can vary quite a bit and sometimes in surprising ways. Yesterday I did an almost 700 mile drive and charge four times - all at Tesla SuperChargers. The first and second were both at the V4 station in Baker, Calif., the third was a V3 in Perris, Calif., and the last a V3 in Escondido, Calif. The two of note were #2 and #3. At the second was after lunch time and it was on the high side of 90 degrees. I charged from 22 - 90% so of course the rate dropped off a lot after 80% bringing the average way down. Overall I had an average charge rate of 112.80 KW. The third session just before dinner time, the sun was behind buildings, and the temperature was in the mid 70s. I charged from 24 - 80%, so no above 80% derating. I had an average charge rate of 108.57 KW. Both sessions started out around 180KW, but the third session dropped off to around 100 KW pretty fast. When I disconnected, the Tesla connector was downright hot, but my A2Z NACS to CCS-1 adapter was completely cool. Based on that, I am assuming that the derating was due to the Tesla connector being hot, but not due to the connection with my adapter - interesting...

 

[potato]

All adapters that intend to be UL listed can derate.

Thanks. That image in your response kind of smells like AI, which I do not trust as far as I can throw it, but it does make sense J3400 would include some provision for it.

The teardown of the Lectron unit I did force myself to watch did include a couple of resistors as well as the thermal switches. So perhaps that's the signalling, to add some resistance to the circuit somewhere. It was certainly rudimentary.

Seems like the J3400 standard itself is paywalled; I can't seem to find the details. In particular I would like to know if the *truck* can detect if the adapter is getting hot, or whether it's strictly between the charger and the adapter. Doesn't matter much in the end I suppose. But I would like to fully understand how it works. I don't want to be giving out bad information.

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