Abstract: A battery terminal connector for connecting a battery cable to a battery terminal post includes a clamp body, a compression ring and a compression plate. The clamp body has a tapered hole for loosely receiving the battery terminal post. The conductive compression ring has a tapered inner peripheral wall and a tapered outer peripheral wall and is sized to fit into the tapered hole of the clamp body and over the battery terminal post. The taper of the inner and outer peripheral walls of the ring are opposed to each other. A compression plate is mounted to the clamp body and includes a flange for pressing the compression ring into the tapered hole to compress the ring and achieve tight electrical contact among the terminal post, the compression ring and the clamp body. The clamp body, the compression ring and the compression plate are made of a material having a hardness of at least about 60 on the Rockwell B scale.