Aimilar Round Digital LED 12V 24V 36V 48V 72V Battery Indicator Meter Gauge Charge Status Monitor Tester for Golf Carts Forklift Car Scooter Motorcycle This battery indicator gauge works for both 12V / 24V, 36V, 48V, 72V battery, used for truck, RV'S, Golf cart or any battery operated unit. High reliability, low cost and compact size. LED Flash for low charge and high charge warning Specifically designed to monitor the power level of battery while charging or discharging. Wide operating voltage and temperature range.