Method of Controlling Battery Replacement, Battery Replacement Control Device, and Battery Replacement Control System

A method of controlling battery replacement includes obtaining information on a battery (first battery) and giving a notification that encourages battery replacement to a user of an electrically powered vehicle when a battery (second battery) lower in SOC than the battery is provided at a battery station (battery replacement station). The method of controlling battery replacement includes controlling the battery station such that the battery and the battery lower in SOC than the battery are replaced with each other.