An ECU sets a SOC estimated from an OCV at the time of activating a system of a vehicle as an initial SOC value in the case where the SOC during a stop of the system is higher than a first SOC, which represents the SOC estimated from the OCV at the time of activating the system by using a discharging curve line, or the SOC during the stop of the system is lower than a second SOC, which represents the SOC estimated from the OCV at the time of activating the system by using a charging curve line. The ECU sets the SOC during the stop of the system as the initial SOC value in the case where the SOC during the stop of the system is equal to or lower than the first SOC and is equal to or higher than the second SOC.