"Charging times will vary depending on charging type and vehicle specs. There are three levels of charging:
AC Level 1 charging can deliver 2 to 4 miles of range per hour (at home use)
AC Level 2 charging can deliver 7 to 40 miles of range per hour (at home use / at work)
Range per hour varies depending upon the type of charger used (3kW to 19kW)
DC fast charging can deliver 60-100 miles of range in 10 minutes (public use)
Range per hour varies depending upon the type of charger used (24kW to 350kW)"
I work for General Motors but this is from the gmc.com website for the Hummer EV coming out.