72V LED Battery Indicator Tester for Lead-acid Battery High reliability, low cost and small size. Suitable for lead-Acid battery. Please see the wiring diagram on the left. Make sure the C terminal of meter was connected with the "+" pole of battery. Application: Motorcycle Golf Carts Car Jet Ski and so on Display: 1 red + 2 yellow + 7 green color LEDs for indicator, 10% per LED segment