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.