An information management apparatus that is used in a capsule endoscope inspection system including a receiving device operated by a built-in rechargeable battery and that is capable of communicating with the receiving device. The information management apparatus includes: a remaining battery capacity acquisition unit that acquires a current remaining capacity which is a remaining capacity of the battery; a storage unit that stores, for each examination item, a necessary remaining capacity which is a remaining capacity that the battery needs to complete an examination; a determination unit that compares the necessary remaining capacity corresponding to an examination item of a selected examination with the current remaining capacity; a calculation unit that, when the current remaining capacity is smaller than the necessary remaining capacity, calculates a charging time needed to increase the remaining capacity of the battery from the current remaining capacity to the necessary remaining capacity; and a control unit that, when the current remaining capacity is smaller than the necessary remaining capacity, causes a display device to display information on the charging time calculated by the calculation unit.