Super hot Battery

More than likely its being over charged (full fielding). First check the voltage accross the battery terminals, should be about 12.5 not running and no more than 14 running. If high than first check the voltage regulator. If its good then there can be an issue in the alternator or wires to and from regulator. I just had this issue last week ansd found a splice that had come apart. Use a mutimeter to test the wires.