A battery terminal unit, comprising: a battery terminal including a post fitting portion to be connected with a battery post standing on a battery and a bolt holding portion formed integral to the post fitting portion and adapted to at least partly accommodate a head part of a stud bolt and hold the stud bolt in a standing state, and a rotation restricting member made of synthetic resin, wherein the rotation restricting member includes: a main body capable of restricting a mounting angle of the battery terminal with respect to the battery post by coming into contact with the battery with the battery terminal connected with the battery post, at least one press-fitting portion formed integral to the main body and adapted to fix the rotation restricting member to the battery terminal by being press-fitted into an opening formed in the bolt holding portion, and at least one detachment restricting portion adapted to restrict a movement of the main body in a direction substantially opposite to an attaching direction of the main body, characterized in that the rotation restricting member being attached to the battery terminal, and the detachment restricting portion includes at least one locking portion extending from the main body substantially along a side lateral to the bolt holding portion and engageable with the bolt holding portion at a position of a side of the bolt holding portion substantially opposite to the main body. a battery terminal including a post fitting portion to be connected with a battery post standing on a battery and a bolt holding portion formed integral to the post fitting portion and adapted to at least partly accommodate a head part of a stud bolt and hold the stud bolt in a standing state, and a rotation restricting member made of synthetic resin, wherein the rotation restricting member includes: a main body capable of restricting a mounting angle of the battery terminal with respect to the battery post by coming into contact with the battery with the battery terminal connected with the battery post, at least one press-fitting portion formed integral to the main body and adapted to fix the rotation restricting member to the battery terminal by being press-fitted into an opening formed in the bolt holding portion, and at least one detachment restricting portion adapted to restrict a movement of the main body in a direction substantially opposite to an attaching direction of the main body, characterized in that the rotation restricting member being attached to the battery terminal, and the detachment restricting portion includes at least one locking portion extending from the main body substantially along a side lateral to the bolt holding portion and engageable with the bolt holding portion at a position of a side of the bolt holding portion substantially opposite to the main body. a main body capable of restricting a mounting angle of the battery terminal with respect to the battery post by coming into contact with the battery with the battery terminal connected with the battery post, at least one press-fitting portion formed integral to the main body and adapted to fix the rotation restricting member to the battery terminal by being press-fitted into an opening formed in the bolt holding portion, and at least one detachment restricting portion adapted to restrict a movement of the main body in a direction substantially opposite to an attaching direction of the main body, characterized in that the rotation restricting member being attached to the battery terminal, and the detachment restricting portion includes at least one locking portion extending from the main body substantially along a side lateral to the bolt holding portion and engageable with the bolt holding portion at a position of a side of the bolt holding portion substantially opposite to the main body.