Battery overheating

If the battery is getting to hot it will buckle and warp the plates in the battery and case the battery to fail. Put a volt meter across the terminals of the battery. With the engine off battery voltage should be 12.6 volts with a fully charged battery. Start the engine with the engine running and the alternator now charging the voltage should be 14.6 volts approximately at the battery. If the voltage is significantly higher it is likely the voltage regulator in the alternator is not regulating/controlling the alternators out put.