Defective voltage regulator. Some are built into the alternator and some are external.
Overcharging.
Yes if the alternator is overcharging the battery.
Overcharging. Check your electrical system to see if the alternator is overcharging the battery. It can also be the battery is defective and needs replacing.
Reversing the cables when you connect them. Overcharging the battery.
Overcharging or defective battery. They will also crake in freezing temperatures if the battery has lost it's charge.
using car maintainer,,,, There is a big difference in a regular Battery Charger and a Battery Maintainer. A Maintainer will keep a battery charged and can be connected full time without overcharging. The usual Battery Charger is for intermittent use at times when your battery is so weak that it must be recharged in a short time, then disconnected from the charger to keep it from overcharging. A good Maintainer can not overcharge.
It's possible that your alternator is overcharging your battery.
No, it will not shut off. Overcharging because the voltage regulator is defective.
Disconnect it. let it cool and replace it. If you battery is boiling that is an indication the alternator is overcharging the battery. Have the alternator checked at any auto parts store.
The bulging is caused by gassing. This is caused by overcharging or by a short circuit inside the battery. The acid inside the battery is turned to gas and it expands the sides of the battery.
Does alt. light stay on after car is shut off? If so could be voltage regulator is defective and overcharging battery when running Does light stay on after car is shut off? If so could be a bad voltage regulator--if so may be overcharging battery Check voltage readings at battery should be around 14.2 with car running -- if much higher than this voltage regulator is bad.
Test/replace the voltage regulator. The year, make and model info would help.