US Patent 9831696 Power supply controller and method for controlling power supply

A power supply controller includes: a processor configured to control a power supply of an information processing apparatus having a plurality of batteries, wherein the processor determines residual capacities of the plurality of batteries and preferentially charges a first battery of the plurality of batteries, the first battery having a residual capacity which is equal to or below a transition-allowable residual capacity that allows a transition of the information processing apparatus from a first mode to a second mode.