2011 Chevrolet Volt Owner's Manual - Page 154

5-34 Instruments and Controls departure time for the current day of the week. Charging begins at the start time and is complete by the departure time only if sufficient time is allowed after the charge cord is plugged in. The vehicle uses an internal clock for programmable charging, not the clock in the center stack. Delayed Rate and Departure Time: The vehicle estimates the charging start time based on the utility rate schedule, utility rate preference, and the programmed departure time for the current day of the week. The vehicle will charge during the least expensive rate periods to achieve a full battery charge by the departure time. Electrical rate information from the utility company for the charging location is required for this mode. Delayed Departure Time: The vehicle estimates the charging start time considering the programmed