A vehicle-side connector to be connected to a charging connector to charge a battery mounted in a vehicle, comprising: a housing provided on the vehicle such that the charging connector is fittable thereinto from front; terminal fittings (11, 11P, 11G, 11S) respectively connected to a plurality of wires (20P, 20S) drawn out from the interior of the vehicle including the battery; and a plurality of terminal accommodating chambers (40, 40P, 40G, 40S) provided in the housing and configured such that the respective terminal fittings (11, 11P, 11G, 11S) are accommodated thereinto by being inserted from behind; characterized in that: the terminal fitting (11, 11P, 11G, 11S) is a round pin terminal formed by being bent to include a terminal connecting portion to be connected to a charging terminal provided in the charging connector on one end side and a wire connecting portion to be crimped to an end of the wire (20P, 20S) on the other end side; an insulating tube portion made of synthetic resin is provided on the outer periphery of a bent portion of the terminal fitting (11, 11P, 11G, 11S); and a locked groove (26, 26P, 26G, 26S) is formed on a base end part of the terminal connecting portion in the terminal fitting (11, 11P, 11G, 11S), and the terminal connecting portion of the terminal fitting (11, 11P, 11G, 11S) is retained and accommodated in the terminal accommodating chamber (40, 40P, 40G, 40S) by radially inserting a retainer into the locked groove (26, 26P, 26G, 26S) of the terminal connecting portion; and one end surface of the insulating tube portion constitutes one groove surface of the locked groove (26, 26P, 26G, 26S). a housing provided on the vehicle such that the charging connector is fittable thereinto from front; terminal fittings (11, 11P, 11G, 11S) respectively connected to a plurality of wires (20P, 20S) drawn out from the interior of the vehicle including the battery; and a plurality of terminal accommodating chambers (40, 40P, 40G, 40S) provided in the housing and configured such that the respective terminal fittings (11, 11P, 11G, 11S) are accommodated thereinto by being inserted from behind; characterized in that: the terminal fitting (11, 11P, 11G, 11S) is a round pin terminal formed by being bent to include a terminal connecting portion to be connected to a charging terminal provided in the charging connector on one end side and a wire connecting portion to be crimped to an end of the wire (20P, 20S) on the other end side; an insulating tube portion made of synthetic resin is provided on the outer periphery of a bent portion of the terminal fitting (11, 11P, 11G, 11S); and a locked groove (26, 26P, 26G, 26S) is formed on a base end part of the terminal connecting portion in the terminal fitting (11, 11P, 11G, 11S), and the terminal connecting portion of the terminal fitting (11, 11P, 11G, 11S) is retained and accommodated in the terminal accommodating chamber (40, 40P, 40G, 40S) by radially inserting a retainer into the locked groove (26, 26P, 26G, 26S) of the terminal connecting portion; and one end surface of the insulating tube portion constitutes one groove surface of the locked groove (26, 26P, 26G, 26S). the terminal fitting (11, 11P, 11G, 11S) is a round pin terminal formed by being bent to include a terminal connecting portion to be connected to a charging terminal provided in the charging connector on one end side and a wire connecting portion to be crimped to an end of the wire (20P, 20S) on the other end side; an insulating tube portion made of synthetic resin is provided on the outer periphery of a bent portion of the terminal fitting (11, 11P, 11G, 11S); and a locked groove (26, 26P, 26G, 26S) is formed on a base end part of the terminal connecting portion in the terminal fitting (11, 11P, 11G, 11S), and the terminal connecting portion of the terminal fitting (11, 11P, 11G, 11S) is retained and accommodated in the terminal accommodating chamber (40, 40P, 40G, 40S) by radially inserting a retainer into the locked groove (26, 26P, 26G, 26S) of the terminal connecting portion; and one end surface of the insulating tube portion constitutes one groove surface of the locked groove (26, 26P, 26G, 26S).