BATTERY PERFORMANCE EVALUATION DEVICE, ELECTRONIC APPARATUS, CHARGER, AND BATTERY PERFORMANCE EVALUATION METHOD

Provided is a device and the like capable of increasing the convenience in performance evaluation of a secondary battery. A battery performance evaluation device evaluates the performance of a secondary battery installed in an electronic apparatus based on mutual communication between the electronic apparatus and/or a charger to which the electronic apparatus is connected, and the battery performance evaluation device Then, battery performance information Info(D) corresponding to the evaluation result is output to an output interface of the electronic apparatus Thus, a user can ascertain the performance evaluation result of the secondary battery without the need to take the electronic apparatus or the secondary battery in a specialized institution or the like, thereby increasing the convenience for the user of the electronic apparatus