Battery Replacement Apparatus

A battery replacement apparatus replaces a first battery attached to a vehicle body of an electrically powered vehicle with a charged second battery. The battery replacement apparatus includes: an acquisition unit that acquires, based on a fact that a size of the second battery is specified, size information indicating the specified size; a mounting table that moves relative to the vehicle body, with the second battery mounted on the mounting table, for attaching the second battery of the specified size to the vehicle body; and an adjustment unit that adjusts, based on the size information, a mount position where the second battery is mounted on the mounting table.