Regular checks to make sure that there is enough DISTILLED water in each of the cells is the best preventative maintenance - should be done at least monthly.
Do not remove the fluid from a battery - you could get severely burned by the chemicals inside. Changing the battery fluid will not prolong the life of it either.
Figure on replacing the battery every two to 4 years, depending on the climate in your region.
Car battery acid consists of Hydrochloric acid and Sulphuric acid.
Car or automotive battery acid is 30-50% sulfuric acid
The pH of car battery acid is normally around 1 (extremely acidic).
acid
It's an acid.
It's an acid.
sulphuric acid
Sulphuric acid
It is sulphuric acid.
Sulfuric Acid
Lead - acid
Yes. A car battery contains sulfuric acid.