72V LED Battery Indicator Tester for Lead-acid Battery High reliability, low cost and compact size. Suitable for lead-Acid battery. Note: "C" pin of the meter must be connected with the "+" pole of battery. When it connects with the battery, the meter will display full. After 155 seconds, it will display real battery level segment. Application: Motorcycle Golf Carts Car Jet Ski and so on Capacity: 1 Red 2 Yellow 7 Green color LED for indicator