I just looked. A Tesla uses a 375v system. It's charged with 220v. It takes 1 hr to get an 80% load and 2 more hrs to go to 100%. They probably use a float charger for battery life.
This new one has a 900v system, no word yet on charging voltage or time.

“In a time of deceit telling the truth is a revolutionary act.”
― George Orwell

It's not over when you lose. It's over when you quit.