19 volts on the battery

Tyler drove the Dart yesterday for the first time this year. Said he heard a bubbling noise coming from the battery when he shut it off. Checked the voltage on the battery with engine off and it was14 V. started car and the voltage on battery was 19 V. I am going to assume the regulator is bad first. maybe a gnd problem there. Worked fine when he parked it. here we go again. new year, new problems. I hate parking a car for the winter.