The Electrolyte Monitoring System is a breakthrough product that non-intrusively detects and reports changes in flooded cell electrolyte levels. The system consists of one electrolyte monitoring sensor which is affixed to the exterior wall of each monitored cell. The sensor has two optical level detection transducers. Each transducer can transmit an infrared light beam into the cell wall and measure the intensity of the reflected light. This intensity will change, depending on the presence of electrolyte fluid on the other side of the cell wall. Two level transducers allow the sensor to detect three discrete fluid levels: “Normal”, “Warning” or “Low”.