Patent ID: 8271053

Claim:
A mobile terminal comprising: a power supply unit that includes a first power source and a second power source; an output unit to display first power source state information of the first power source and to display second power source state information of the second power source; a user input unit to receive an input of a power forwarding command for forwarding power from the first power source to the second power source or for forwarding power from the second power source to the first power source; and a controller to control the power supply unit to forward the power from the first power source to the second power source or to forward the power from the second power source to the first power source based on the inputted power forwarding command, and the controller to control the output unit to display the first power source state info nation and the second power source state information according to the power forwarding, wherein the output unit displays a first power source icon indicating the first power source state information and displays a second power source icon indicating the second power source state information, and the user input unit receives the input of the power forwarding command by a touch & drag from a first point of the first power source icon to a second point of the second power source icon, and the controller controls the power supply unit to forward a power level corresponding to a difference between the first point and a current power level of the first power source, from the first power source to the second power source.