A power interface (100), a mobile terminal and a power adapter. The power interface (100) comprises a body portion (110) adapted to connect to a circuit board (160); a plurality of spaced data pins (120), the data pins (120) being connected to the body portion (110); and a plurality of spaced power pins (130), the power pins (130) being connected to the body portion (110) and the power pins (130) being spaced apart from the data pins (120), the power pin (130) comprising a first contact surface (131) adapted to electrically connect to a conductive member and a second contact surface (132), which is adapted to be wrapped by an insulating encapsulation portion (140), the second contact surface (132) having at least one protruding portion (133) so as to increase the current load amount of the power pins (130).