PORTABLE TERMINAL DEVICE, CHARGING METHOD AND PROGRAM

A portable terminal device is provided which is capable of notifying a user of a use status of external power supplies when there are a plurality of external power supplies for charging. A portable terminal device includes a secondary battery which is charged with power supplied from any one of a plurality of external power supplies, a detection unit which detects that each of the plurality of external power supplies has been connected, a power supply status determination unit which determines a power supply status indicating whether charging using the plurality of external power supplies is possible based on a detection result of the detection unit, a selection unit which selects an external power supply to be used for charging from among the plurality of external power supplies based on the power supply status of each of the plurality of external power supplies determined by the power supply status determination unit, and priority orders of the external power supplies which are orders of selecting the external power supply which supplies the power to the secondary battery from among the plurality of external power supplies, a charging unit which charges the secondary battery with the power supplied from the external power supply selected by the selection unit, and an output unit which outputs information indicating the external power supply selected by the selection unit.