How many cells are in a car battery?

in a normal 12volt car battery there are 6 cells. each cell produces 2 volts.
The under-the-hood auxiliary battery used in most automobiles is a 12 volt (nominal) lead acid battery that comprises six 2-volt cells in a single package using a sulphuric-acid/water solution and lead plates. Actual cell voltage depends on state of charge ranging from about 1.85 volts (discharged) to 2.2 volts (fully charged).