When activating a dry battery, only electrolyte will be added. Once the battery has been activated, only distilled water will be added to top-up the cells.
To calculate the amount of acid.
Begin with the rated wet weight of battery;
Ex: S-550 = 56kg
subtract dry weight;
S-550 = 43kg
This means 13kg is the total weight of acid in the 3 cells.
Divide weight of acid (13kg) by strength of acid (1.265 specific gravity) as 1.265 specific gravity equates to 1.265 grams/litre (water = 1.000 grams/litre)
13/1.265 = 10.28L this is the amount of acid.
11 L should be acquired to cover spillage.