Our biggest EA location near me has 10 chargers. 2 of them are 350s and the rest are 150s (which we have learned are actually 175s). I have had a variety of experiences here, including the 350s not really offering much more current than the 150s.
The last two times, though, I have started the charge. The car confirmed that it started and I walked away. I received a notice from the app that there was an error and that I needed to unplug and try again. In both cases, when I went back to the car the charge was still in progress. After the charge completed the session ended as expected and I unplugged the car. BUT, in both cases, the app never reported progress or completion. Both times, the app continued to show an error. I never received the completion email and the app, once it cleared, does not show either session as happening. I am using the promotional plan, so they weren't getting money from me anyway. But the question remains, if I was a pay as you go customer, would they have charged my card for these sessions?