I'm trying to understand these charges, from the Gaylord MI Supercharger last month for charging my Model Y. So there were 18 minutes at the very high tier 3 rate, and 55 minutes at the much lower tier 1 rate. My car came in with a pretty low state of charge and I left it there to go to 100% while eating at the (very tasty) Lucky Steak House.
Would the tier 3 charge rate have started first, and the kW rate then dropped as the battery heated up? What are the most efficient ways to use superchargers on road trips? Maybe to save money on road trips I should always let it stay for a while and charge to 100% to get the lower tiers at the end of charging? Or to minimize time spent charging I should just leave when the kW rate drops and drive to the next supercharger and repeat?