A battery can leak when its casing is damaged or when it is exposed to extreme temperatures, causing the internal chemicals to react and leak out.
Usually a battery will leak because of overvoltage, overtemperature or a bad battery cell.
A leak.
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An auto battery could be leaking for a couple of reasons. The alternator could be overcharging the battery causing the leakage. Or the battery itself could have a short or other internal problem causing it to leak when charging.
Anytime you run an automobile battery down you shorten the life of that battery. An acid leak in a sealed battery means the battery must be replaced. If it is leaking from a battery in a battery with filler caps just add distilled water to the full mark and wash the acid off the vehicle battery compartment.
Crack or hole in the battery case or it is being overcharged by a defective voltage regulator.
I dont know what you're question is...
shooting it with a gun
Corrosion.
Yes - this is very bad and you should stop using the battery immediately. Battery acid is a very strong acid and can cause severe chemical burns if not handled properly. A battery acid leak means your battery has been damaged and may abruptly stop working.
A small leak in the vapor system from the tank to the engine.
A leak