A battery information management device according to the present disclosure includes a memory, and a hardware processor coupled to the memory. The hardware processor being configured to: when a degree of deterioration of a battery is lower than a reference, collect battery information on the battery with a first collection period; when the degree of deterioration of the battery is equal to or higher than the reference, collect the battery information with a second collection period shorter than the first collection period; and transmit the collected battery information to an external device.