Battery reservation device and battery reservation method

A battery reservation device that accepts reservations for battery packs that are rented out from a battery station and are installed in a power consumption element, the device comprising a processor configured with a program to perform operations comprising:

• operation as a battery state acquisition component configured to acquire a current remaining battery charge of battery packs scheduled to be returned to the battery station;
• operation as a scheduled return time acquisition component configured to acquire a scheduled return time at which the battery packs scheduled to be returned will be returned to the battery station;
• operation as a remaining battery charge prediction component configured to predict a remaining battery charge of the battery packs when the battery packs are returned to the battery station, based on the current remaining battery charge of the battery packs acquired by the battery state acquisition component and the scheduled return time of the battery packs acquired by the scheduled return time acquisition component;
• operation as a charging speed acquisition component configured to acquire a charging speed of a charger configured to charge the battery packs at the battery station;
• and
• operation as a reservation acceptance component configured to add the battery packs scheduled to be returned to a reservation information table and accept a rental reservation for the battery packs scheduled to be returned based on the remaining battery charge at a time of return predicted by the remaining battery charge prediction component and the charging speed of the charger acquired by the charging speed acquisition component.