Aimila 12/24V LED Battery Charge Discharge Status Indicator Gauge Testers for Lead-Acid Battery Golf Cart Club Car Hex 12V-24V 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 of meter is connected to either the battery "+" or a key switch. 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