Abstract: This invention relates to a novel single block for fixing electroconductor cables to battery terminals. The single block piece has a hollow essentially parallepiped configuration, the hollow region having an ellipsoidal shape wherein the battery terminals are housed. The front end of the single block piece expands upwards, the expanded region being cross-sectionally hollow. The lower region of the front face of the single block piece has a hole with a threaded inner surface where a screw or the like is threadably inserted. A semicircular plate is fixed to the tip of the screw. The plate slides through the hollow region in the single block as the screw is being threaded in and thereby the plate will exert pressure on the battery terminal.