Note. For batteries with a cover common to all cells, equipped with a capacitor cavity, it is allowed to check the electrolyte level once every two months.
The electrolyte level in all cells must be between the marks «MIN» And «MAX», applied to the translucent battery case. If there are no marks, then the electrolyte level should be 5–10 mm above the upper edge of the separators.
Note. It is convenient to check the electrolyte level above the upper edge of the separators with a glass tube, lowering it into the cell until it stops in the separator and closing the free end of the tube with your finger.
To restore the electrolyte level, add only distilled water. If it is determined that sloshing is the cause of the low level, then add electrolyte of the same density as that left in the battery cell. If the level is above normal, pump out the electrolyte with a rubber bulb with an ebonite tip.
Warning! It is strictly forbidden to add concentrated acid to the battery!