Functions: Works on 12V/24V, 36V, 48V / 72V battery. Lampa flash LED warning of low and high charge. Specially designed do monitor battery level during charging or discharging. Display 10-segment bar chart LED. Option of memory do recall the amount of electricity. High reliability, wide operating voltage and temperature range. Specifications: Operating voltage: 12 V / 24 V, 36 V, 48 V / 72 V. Operating current: nominal 20 mA Accuracy: +/- 0,5% Operating temperature: -40 ℃ - + 85 ℃ Humidity: 95% RH (non-condensing) at 32℃ or more for 2 hours Waterproof: IP65 Package weight: ok. 68g Assembly: do golf cart or other battery powered equipment 12V / 24V / 36V / 48V / 72V DC Package includes: 1 x Battery Indicator 1 x Accessory Set Connect the appropriate voltage, according to the marking on the back of the battery indicator. Too high or too low voltage will cause damage or malfunction of the battery indicator.