I've been watching a number of YouTube videos from folks using the Tesla CCS1 Adapter that they ordered from Korea. In nearly all of them they are pleased to be getting more than 150kW power delivery. I have a concern.
Looking at this video I see that the label states the current limit to be 300ADC:
In this video you can see that Electrify America is supplying 490ADC through the adapter.
That is 63% more current through the adapter than Tesla has specified. I'm sure it is designed for probably double the stated current draw for safety but it is still drawing far more current than the adapter's stated specification. I would have assumed that Tesla's firmware would have done the limiting as it has a Qualcomm CCS IC to do the negotiation with the DCFC equipment. Perhaps, Tesla is planning a higher rate on the North American version of the adapter or the one from Korea will be relabeled with a higher current rating. None of the YouTubers have commented on or measured the temperature of the adapter during a charging session.
Looking at this video I see that the label states the current limit to be 300ADC:
In this video you can see that Electrify America is supplying 490ADC through the adapter.
That is 63% more current through the adapter than Tesla has specified. I'm sure it is designed for probably double the stated current draw for safety but it is still drawing far more current than the adapter's stated specification. I would have assumed that Tesla's firmware would have done the limiting as it has a Qualcomm CCS IC to do the negotiation with the DCFC equipment. Perhaps, Tesla is planning a higher rate on the North American version of the adapter or the one from Korea will be relabeled with a higher current rating. None of the YouTubers have commented on or measured the temperature of the adapter during a charging session.