Abstract: An electronic device includes a monitoring unit that monitors a voltage of a first terminal that receives power supplied from a power supply apparatus, and a control unit that performs control so as to stop the power supply from the power supply apparatus if a voltage variation per unit time of the first terminal is not less than a first predetermined value or the voltage of the first terminal is not less than a second predetermined value.

Abstract: An information processing apparatus includes a first connection unit, an acquisition unit configured to obtain capability information about an external apparatus via the first connection unit, a power control unit configured to control one of a plurality of states based on the obtained capability information, the plurality of states including a first state in which power is transmitted to the external apparatus and a second state in which power is received from the external apparatus, and a notification unit configured to, when the power control unit performs the control, distinguish and make a notification of the first state, the second state, and a third state different from the first and second states. When performing power control based on a power control policy, the information processing apparatus then makes a distinctive notification of a power transmission state and a power reception state, or makes a distinctive notification for each power level.

Abstract: If apparatuses capable of both power transmission and power reception are connected to each other, power may circulate needlessly between the apparatuses and be consumed. Power control is then performed based on a determined power control policy by providing display for determining a direction of power transfer when needed.

Abstract: An electronic device includes a power supply unit that supplies power received from an external apparatus to the electronic device, a first authentication unit that performs an authentication process for the external apparatus with power supplied from the power supply unit, a second authentication unit that performs an authentication process for a battery with power supplied from the power supply unit when authentication by the first authentication unit has succeeded, and a charging unit that initiates charging the battery with power supplied by the power supply unit when authentication by the second authentication unit has succeeded.