* The Default 80% Charge Setting (2011-2013 only). Set the main charge timer to both start and end at the same time every day, every day of the week. It doesn't matter what the time is, as long as it's identical for both the start and end of charge. Set the timer charge limit to 80%. On the 2013 only, then set the car's (not the timer's) charge limit to 100%. Now whenever you plug the car in, it will immediately charge to 80% and stop. If you want to charge to 100% instead, just press the Timer Off button in the cluster of buttons with the charge port release, steering wheel heater switch, etc.