Patent ID: 8862907

Claim:
An information processing apparatus comprising: an internal system which consumes electric power; circuitry configured to identify an AC adaptor connected to the information processing apparatus as one of a first AC adaptor or a second AC adaptor, the first AC adaptor having a higher rating than the second AC adaptor; and a battery charge control circuit configured to control charging of a battery storing electric power, the electric power being used for operation of the internal system; a first switch to connect the AC adaptor to the internal system; a second switch to connect the AC adaptor to the battery charger; and a third switch to connect an output of the battery charger to the internal system, the output of the battery charger being connected to the battery, wherein the circuitry controls the first, second and third switches to switch a power supply path to the battery charge control circuit and/or the internal system into a proper state according to whether the AC adaptor connected is the first AC adaptor or the second AC adaptor, and when the AC adaptor connected is the second AC adaptor, the circuitry switches the power supply path to supply all electric power from the second AC adaptor to the battery charge control circuit, and the internal system is connected in parallel to the battery to be supplied with electric power from at least one of the battery and the second AC adaptor.