A power interface, a mobile terminal, and an electronic device are disclosed. The power interface includes a housing, a connection body, and a partition piece. The connection body is arranged in the housing, configured to be connected to a circuit board, and includes at least one power-pin assembly. Each power-pin assembly includes a pair of power pins spaced apart from each other. The partition piece is sandwiched between the pair of power pins, and includes a tail end connected to the circuit board and a head end away from the circuit board and opposite to the tail end. The tail end is spaced apart from the housing and connected to the connection body.