Cal Boats CAL 27 Mk III Owner's Manual - page 35
BASIC RULES FOR BATTERY CARE AND MAINTENANCE 35
12) Neutralize corrosion in battery box by washing with solution of baking soda as recommended in
No . 3; rinse with water .
13) The amount of water which is needed by the different cells will be a clue to other problems . For
example, if each week the water, which was put in the previous week has been used, it is reason-
able to expect that too much charging current has passed through the battery; hence, the volt-
age regulator should be checked . All cells in the battery should take the same amount of water .
If one cell should take more than the others and does this each week, it would be expected that
the container is leaking . Whether the leakage is through the bottom of the container, or from the
sides of the container,can be determined by examination .