Ah that's good to know. I would absolutely say change it to 240V then and go with a 14-50, 14-30, or 5-20 plug, higher the better, depending on what the panel can handle. 0 to 100 charge times would look like this:
50a circuit / 32a charging = 7.68 kW ~4 hrs
30a circuit / 24a charging = 5.76...