CONTROL METHOD, PROGRAM, INFORMATION PROCESSING DEVICE, AND RESERVATION SYSTEM

In a reservation system that reserves a charger to charge a power source of an electric automobile, a control method of an information processing device is provided enabling a charger to be reserved, taking into consideration arriving at a destination earlier. The information processing device is caused to search for a charger existing within a predetermined range from a current location in a case where the battery level has been determined to have fallen below a first threshold value, and in a case where a destination has been set in the application and in a case where a plurality of searched chargers exist, to calculate a predicted charging end point-in-time at each charger, based on a predicted arrival point-in-time to each charger and the availability state and charging capability of each charger, and in a case where with the calculated predicted charging end point-in-time for each charger as the departure point-in-time from each charger, to effect control to reserve a charger of which the predicted destination arrival point-in-time is the earliest of the calculated predicted destination arrival point-in-times for each charger.