Apparatus and Method for Diagnosing Performance of Battery

A battery performance diagnosis apparatus according to an embodiment disclosed herein includes memory and one or more processors configured to generate a diagnosis command for diagnosing a first channel among a plurality of channels of a charger/discharger, data, when a battery is inserted into the first channel obtain a stream of measurement information regarding the battery during charging or discharging of the battery by using the charger/discharger, diagnose performance of the battery based on the measurement information, and store the diagnosed performance.