Information control device for electric vehicle, electric vehicle, and method for guiding timing of power charge

A method for guiding a timing of power charge for an electric vehicle, the electric vehicle traveling by a vehicle-mounted battery that is charged with electric power supplied from a power supply provided at an outside of the electric vehicle, the electric vehicle including an information control device, the information control device including a lock operation detector configured to detect a lock operation of a door lock mechanism of the electric vehicle;

• a remaining power detector configured to detect a remaining power amount of the vehicle-mounted battery;
• and a notification controller configured to control a predetermined notifying device to make a notification to the outside of the electric vehicle, the notification being indicative of information that recommends the power charge of the vehicle-mounted battery based on detection results of the lock operation detector and the remaining power detector, the method being performed by the notification controller of the information control device, the method comprising:
• guiding a timing of power charge by making the notification indicative of the information that recommends the power charge of the vehicle-mounted battery if the remaining power amount detected by the remaining power detector is small when the door lock mechanism has been locked or is to be locked.