The Automobile Storage Battery

By Volume

For 1.300 specific gravity use 3-1/2 pints distilled water for each gallon of 1.400 electrolyte.

For 1.280 specific gravity use 4-1/2 pints distilled water for each gallon of 1.400 electrolyte.

For 1.275 specific gravity use 5 pints distilled water for each gallon of 1.400 electrolyte.

For 1.260 specific gravity use 5-1/4 pints distilled water for each gallon of 1.400 electrolyte.

In case you wish to use other measuring units than those given in the above table, this table may be written as follows, giving the number of parts distilled water to 10 parts of 1.400 specific gravity electrolyte:

Specific Gravity Desired	Parts by Weight	Parts by Volume
1.300	3	4-1/4
1.280	4	5-1/4
1.275	4-1/6	6
1.260	4-7/10	6-1/2

The next table gives the number of parts of distilled water to 10 parts of concentrated sulphuric acid (which has a specific gravity of 1.835) to prepare electrolyte of various specific gravities:

Specific Gravity Desired	Parts by Weight	Parts by Volume
1.400	8-1/2	15-8/10
1.300	13-1/2	15-8/10
1.300	13-1/2	25
1.280	15	27
1.270	16	28
1.260	17	30