Sulfation Status of an Open Lead Acid Battery
Let''s say we have a 6 Vdc open lead acid battery. There will be 3 cells as each one will be about 2 Vdc each. If 12 Vdc there will be 6 cells. We measure Specific Gravity (SG) in each cell. The SG will go from 1.000 (that is pure water), to about 1.850. The SG of a 97% solution of sulfuric acid at 60 degrees Fahrenheit is 1.84.