Flow-Rite’s advanced electrolyte level indicator, Eagle Eye, monitors and displays the status of battery cell electrolyte levels with a solid green or blinking red light. The new light features a trimmable probe and no longer requires calibration. The light measures electrolyte levels without a direct current being drawn from the cell. Eagle Eye instead uses capacitive sensing technology. This eliminates any potential corrosion between the plates and the probe. The sealed polypropylene lens protects the LED and electronics from impact and acid migration. The terminals are sealed to the wires to prevent corrosion.