What are the current charging speeds that should be expected at various states of charge? I've had issues at the supercharger in Casa Grand with my model 3 performance. A friend and I went to a concert in Phoenix the better route planner suggested stopping in Casa Grand on the way. I think for 10min to have enough juice for a round trip. Plugged the car in and went across the street to grab a quick bite to eat. After placing my order I checked the app and noticed the car was only charging at 4kw and would bounce up to 30 occasionally. So it was basically charging at the same rate as my 14-30 at home. By the time we finished eating I didn't have time to try another stall.
After the concert since it didn't get a significant charge I had to stop at casa grand again. The car said it needed 20 minutes of charging to make the trip. I was at about 18% battery and mistakenly thought the sweet spot for max charging speed was 20%-60% SOC. It started charging at 60kw and I thought it would pick up above once it got above 20% state of charge. We went across the street for a burger and shake. After ordering I checked again. It stayed at 60kw for charging. I went back and tried another stall and it jumped up and started charging faster but not much faster. Maybe 90kw (not sure) but it was slower than the other times I supercharged. My friend had to get up early in the morning so we only charged just enough to get home. After dropping him off I noticed that my SOC was estimated to be at 0% when I reached my house. There was a supercharger a couple of miles from his place so i swung by there. At the supercharger in Tucson it had no issues charging at 143kw this time. I'm still trying to figure out what is normal and what isn't as far as charging speeds. I've checked multiple posts but they are either pretty old or mixed with info about charging speeds in Europe.