A battery terminal to be mounted on a battery post projecting from a battery main body of a battery, comprising: a terminal main body including an upper plate portion and a lower plate portion provided separately from the upper plate portion and arranged in parallel to the upper plate portion, the upper plate portion including an upper plate mounting portion having an upper plate mounting hole through which the battery post is to be inserted and an upper plate fastening portion connected to the upper plate mounting portion, the upper plate fastening portion including an upper plate slit portion extending from a hole edge of the upper plate mounting hole to an end edge of the upper plate fastening portion, and parts arranged at both sides of the upper plate slit portion serving as an upper plate first fastening portion and an upper plate second fastening portion, and the lower plate portion including a lower plate mounting portion having a lower plate mounting hole through which the battery post is to be inserted and a lower plate fastening portion connected to the lower plate mounting portion, the lower plate fastening portion including a lower plate slit portion extending from a hole edge of the lower plate mounting hole to an end edge of the lower plate fastening portion, and parts arranged at both sides of the lower plate slit portion serving as a lower plate first fastening portion and a lower plate second fastening portion; and a fastening member configured to press the upper plate first fastening portion and the upper plate second fastening portion, and the lower plate first fastening portion and the lower plate second fastening portion in directions toward each other such that the upper plate mounting hole and the lower plate mounting hole are deformed and reduced in diameter by the fastening member being mounted on the terminal main body, wherein the lower plate fastening portion is arranged to overlap the upper plate fastening portion, characterized in that the upper plate portion and the lower plate portion are separate bodies, and the upper plate portion and the lower plate portion are assembled to allow a positional displacement. a terminal main body including an upper plate portion and a lower plate portion provided separately from the upper plate portion and arranged in parallel to the upper plate portion, the upper plate portion including an upper plate mounting portion having an upper plate mounting hole through which the battery post is to be inserted and an upper plate fastening portion connected to the upper plate mounting portion, the upper plate fastening portion including an upper plate slit portion extending from a hole edge of the upper plate mounting hole to an end edge of the upper plate fastening portion, and parts arranged at both sides of the upper plate slit portion serving as an upper plate first fastening portion and an upper plate second fastening portion, and the lower plate portion including a lower plate mounting portion having a lower plate mounting hole through which the battery post is to be inserted and a lower plate fastening portion connected to the lower plate mounting portion, the lower plate fastening portion including a lower plate slit portion extending from a hole edge of the lower plate mounting hole to an end edge of the lower plate fastening portion, and parts arranged at both sides of the lower plate slit portion serving as a lower plate first fastening portion and a lower plate second fastening portion; and a fastening member configured to press the upper plate first fastening portion and the upper plate second fastening portion, and the lower plate first fastening portion and the lower plate second fastening portion in directions toward each other such that the upper plate mounting hole and the lower plate mounting hole are deformed and reduced in diameter by the fastening member being mounted on the terminal main body, wherein the lower plate fastening portion is arranged to overlap the upper plate fastening portion, characterized in that the upper plate portion and the lower plate portion are separate bodies, and the upper plate portion and the lower plate portion are assembled to allow a positional displacement.