Problem to be solved: to provide an apparatus capable of improving convenience of performance evaluation of a secondary battery.The performance of the secondary battery 240 mounted on the electronic equipment 200 is evaluated by the battery performance evaluation apparatus 100 based on the mutual communication between the electronic equipment 200 and / or the charger 400 connected to the electronic device 200 and the battery performance evaluation apparatus 100.The battery performance information info (d) corresponding to the evaluation result is output to the output interface 204 of the electronic apparatus 200.For this reason, it is not necessary for the user to bring the electronic device 200 or the secondary battery 240 to a specialized organization or the like, and the performance evaluation result of the secondary battery 240 can be grasped, thereby improving the convenience of the electronic equipment 200 to the user.Diagram
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