Here is some more
I did a true zero to 100% charge on a 150 KW Electrify America CCS to see the charging curve and the 150 KW CCS I was on provided a max of 360 amps vs the 450 amps the local 350 KW CCS provided, this resulted in a peak charging rate of 134 KW. Many of the V2 superchargers I have used peak at 130 to 140 KW when not sharing, so even if a 350 KW CCS is not available the 150 CCS isn't a waste of time... especially if a V2 SuperCharger is busy and you would have to share a cabinet.
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I also did a time analysis on a 20% to 80% charge between V3, 350 KW CCS and 150 KW CCS (since I don't have empty to full on V3) and it looks like if you are doing a medium long charge there is virtually no difference in charging time between the three. The 150 KW CCS was slower between 20% and 65%, but then after 65% it passed the others and actually finished sooner! I suspect that in hot weather (high 80's or low 90's and above) charging so fast low down heats up the battery and at higher SOC's the charge rate on the faster chargers gets throttled down more than the 150 KW CCS does... but the battery tab on "Scan my Tesla" doesn't have cooling information, so battery temps and coolant flow didn't get logged. I need to make a custom tab for charging data. Also, since the "meat" of the V3 and 350 KW CCS curves are below 20% you would charge faster from 5% to 80% on them than you would on the 150 KW CCS.
Later,
Keith