Searon 12V Volt Battery Indicator Meter Gague for EZGO Club Car Yamaha Golf Cart LED battery indicator works on 12/24 volt EZGO ClubCar Yamaha Golf Cart Displayed using a 10 segment LED bar graph display from full to empty and Specifically designed to monitor the power level of battery while charging or discharging. Make sure your "C" terminal is either connected to the Battery "+" or a Key switch,otherwise meter scans from full to empty then shuts off. At a 90% battery discharge, the red and yellow LEDs will alternately flash to indicate a very low voltage capacity is remining. Once battery was fully charged, Meter will cycle through for continuous 6 minutes then stay "full" position.