During servicing, the electrolyte level should be up to which marker in the cell?

During servicing, the electrolyte level should be up to which marker in the cell?

• A. Top edge
• B. Bottom edge
• C. Indicator
• D. Middle

Answer: (C)

Electrolyte level in a lead-acid cell is set by a marker on each cell, called the indicator. During servicing, you add distilled water until the electrolyte reaches that indicator mark. This ensures the plates are properly immersed for good electrical contact and charging efficiency, while preventing overflow or insufficient immersion. If the level were at the top edge, it could overflow during charging; at the bottom edge, the plates wouldn’t be fully covered and capacity would be reduced. The indicator provides a reliable, repeatable reference for the correct level across cells, making it the appropriate target.

Electrolyte level in a lead-acid cell is set by a marker on each cell, called the indicator. During servicing, you add distilled water until the electrolyte reaches that indicator mark. This ensures the plates are properly immersed for good electrical contact and charging efficiency, while preventing overflow or insufficient immersion. If the level were at the top edge, it could overflow during charging; at the bottom edge, the plates wouldn’t be fully covered and capacity would be reduced. The indicator provides a reliable, repeatable reference for the correct level across cells, making it the appropriate target.