Patent ID: 8392131

Claim:
A portable electronic device, comprising: a storage unit; a voltage measuring unit that measures, each time charging of a rechargeable battery mounted occurs, a voltage of the rechargeable battery; a control unit that performs control such that information on a number of times charging identified based on a voltage value measured via the voltage measuring unit is stored in the storage unit; an information acquisition unit that acquires information from outside thereof; and an operation unit, wherein, in a case in which information on a number of times charging the rechargeable battery has been acquired via the information acquisition unit, the control unit performs a predetermined information update based on the information on the number of times charging, wherein the rechargeable battery has unique identification (ID) information thereto, wherein the storage unit associates and stores the ID information of the rechargeable battery and the information on the number of times charging, and wherein, when the rechargeable battery is mounted, the control unit confirms whether ID information of the rechargeable battery is stored in the storage unit, and in a case in which the ID information is not stored in the storage unit, the output unit presents a first selection menu for selecting whether the rechargeable battery is an unused product, and in a case in which it has been selected as being an unused product from the first selection menu via an operation of the operation unit, controls the storage unit such that ID information of the rechargeable battery is newly registered, and stores information on a number of times charging subsequently therein in association with the ID information.