its either gonna be an acid or a caustic... cant be both
( acid = low ph, caustic = hi ph) and thats about the only thing I remember from chemistry class
It's sulfuric acid.
A Shocking Expose: Your Car's Battery
"Sulfuric acid is highly caustic. Caution should used when dealing with electrolyte or automotive batteries. Sulfuric acid can burn clothing and the skin and even cause blindness. There is even a slight danger of explosion. "