A power supply unit for an aerosol inhaler includes: a power supply able to discharge power to a load for generating an aerosol from an aerosol source； and a control unit configured to perform a plurality of types of processes for diagnosing a state of the power supply. The plurality of types of processes are different in at least one of time which is required to obtain a result of diagnosis and information which is used to obtain a result of diagnosis.一種霧氣吸嚐器用之電源單元包括：電源，能夠向用以自霧氣源生成霧氣的負載釋放電力；以及控制單元，經配置成執行用以診斷該電源之狀態的多種類型之程序。該多種類型之程序在獲得診斷結果所需之時間、及獲得診斷結果所使用之資訊之至少其中一者上有差別。
