There is acid on the inside and it has burnt through the metal that is keeping it inside. The reason the acid might be leaking out is because the battery has a leak.
Leaking from where on the battery, the caps? If so the charging system may be over charging the battery and causing the acid to boil out. Could be a voltage regulator problem.
My husband said it is caused by the vapor from the battery acid. It is the vapor of the battery acid leaking out of the battery, so the above answer is correct.
The battery acid is leaking out, either do to a failing battery or do to an alternator that is over charging.
Yes, battery acid is very corrosive and will damage any metal parts.
If a battery is leaking, then it needs to be thrown away. The acid leaked can be very dangerous.
It means that the battery is junk and needs to be repalced. Time to buy a new one.
No, it is battery acid corrosion caused by leaking fumes. Clean it off with water and baking soda which will neutralize the acid.
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.
explosion and battery acid leaking out which leads to rotting and deterioration of some materials
Leaking battery acid can burn your skin. Im not sure if that qualifies as a rash, the correct term is chemical burn.
Car battery acid goes everywhere; acid can burn the hands if the person is not careful. A battery that is low on acid will not hold a charge as well. Most new car batteries have "cells" which hold the acids, so it's likely one cell is leaking.