Abstract: A storage battery terminal post receives a split connector cap formed of compatible metal. A rear extension of the cap is secured by a clamping set screw to an exposed end of a battery cable. A screw-threaded pressure sleeve is received by internal threads of a housing and has its forward end bearing on a full circle flange portion of the connector cap. The force exerted by the pressure sleeve on such flange produces closing of the split connector cap around the battery terminal post by a camming action of curved connector cap sections with a coacting curved wall of the housing.