The present invention relates to a mobile terminal. Provided is a mobile terminal comprising: a display unit having a window; a main body on which the display unit is seated, wherein an internal space is formed between the main body and the display unit; a sliding unit having a first battery accommodated therein, wherein the sliding unit implements a first state where the sliding unit is inserted into the internal space and a second state where the sliding unit is extracted from the internal space; and a second battery provided in the internal space to supply electric power when the first battery is extracted, wherein in the first state, wireless communication for mobile communication and an operation by software are performed using the first battery, and in the second state, the wireless communication for mobile communication is interrupted, and the operation by the software is performed using the second battery.