Huh? Superchargers aren't designed for 'driving around and visiting" They are designed for transiting. Destination chargers are for visiting and there's plenty of them where you mentionedNeither Seattle nor Minneapolis have superchargers close enough that you can drive any amount around the city and get back to a supercharger with a decent reserve. It's not enough to have superchargers 100 miles away from a city unless you also have one in the city. You can drive through those cities, you just can't visit them.
The Jackson, MS Supercharger is showing up in the Model S Navigation System this morning as:
Bass Pro Dr.
Off I-20 just East of I-55.
Jackson, MS does put a bright red dot in the middle of a huge supercharger void on the map. Can't wait until I can drive from New Orleans to Chicago without going hundreds of miles out of my way. Go Tesla!
I was at 23 miles when I started.Flyeyes, I owe you a beer. Awesome to see.
The other guys already started to answer your question. Charge rate is demonstrated on the instrument cluster as volts and amp.s Multiply them and divide by 1000, you've got your charge rate. Its determined by the lesser of charger's ability to deliver and car's ability to accept.
The more full the battery gets (and this is a simplification) the slower it can accept charge. Since you drove 215 miles from Memphis to Jackson, your state of charge should have been no more than 20% full, which is a good area for fast charging. Alternatively, if you drove 25 miles and started with a full charge charge your battery would still have a SOC of roughly 90%, which is a somewhat slow charging area, and slows down progressively thereafter. The idea is not, under best circumstances, to charge beyond 95% unless you really need it. That last 5% is really SLOW. The last 1% is really REALLY SLOW.