With a hydrometer which you can buy at any auto parts store.
Car battery acid consists of Hydrochloric acid and Sulphuric acid.
Car or automotive battery acid is 30-50% sulfuric acid
A car battery has sulfuric (sulphuric) acid in it.
It's an acid.
acid
The pH of car battery acid is normally around 1 (extremely acidic).
Lead - acid
sulphuric acid
Sulfuric Acid
It's an acid.
It is sulphuric acid.
Sulphuric acid