A method for processing a power source state and a terminal supporting the same, wherein the terminal includes a power source configured to supply a specific electric power; a charger IC configured to collect power source information transmitted from a charger to the power source; a gauge IC configured to collect charging information of the power source and to generate gauging information to display a fuel gauge indicating a charging state of the power source based on the power source information transmitted by the charger IC; a control unit configured to display the fuel gauge based on the gauging information transmitted by the gauge IC; and a display unit configured to display the fuel gauge.