Information output device and information output method

An information output control method for use in a control device that causes an output device to output recharging proposal information, the output device outputting at least one of image data, text data, or voice data, the recharging proposal information being information that encourages recharging of a power source that drives a mobile unit,

• the information output control method comprising:
• accepting setting of a first destination and a second destination serving as destinations of the mobile unit, the second destination being a destination for which the mobile unit heads after arrival at the first destination;
• determining whether a cruising distance is shorter than a route distance, the cruising distance being a distance over which the mobile unit is assumed to be capable of continuing to travel with a remaining amount of the power source, the route distance being a distance from a current location of the mobile unit to the second destination;
• calculating a difference between the cruising distance and the route distance when the cruising distance is shorter than the route distance;
• and
• outputting the recharging proposal information when the difference is less than or equal to a predetermined value, while the control device does not output the recharging proposal information regardless of existence of a recharging facility between a current location of the mobile unit and the second destination when the first destination is the recharging facility or the difference is more than the predetermined value, the recharging facility being a facility where the mobile unit is capable of recharging the power source.