Usage Tips:Display of 10 segment LED bar graph.Clear LCD of battery gauge displays battery level and battery capacity percentage.LED Flash for low charge and high charge warning. Battery indicator meter is specifically designed to monitor the power level of battery while charging or discharging.Memory option to recall quantity of electricity. LED battery indicator is nice in design and long-lasting in use. Battery indicator meter is of high quality material let your car charger always . Battery Gauge works for 12V/24V, 36V, 48V/72V battery of golf carts, marine, motorcycle, ATV, tractor, truck, forklift, etc. Metric gauge for purchase with installation accessories, easy to install , Digital battery indicator is encapsulated by sealed epoxy resin, and the waterproof grade reaches IP65. Operating Current:20mA nominal Accuracy:+/- 0.5% Operating Temperature:-40 Celsius - +85 Celsius Humidity:95% RH (non-condensing) at 32 Celsius or more for 2 hours Note Please connect the suitable voltage, as the mark in the back side of battery indicator. Voltage too high or too low makes the battery indicator damaged or work abnormally. Colour: black Material: ABS Package Contents: 1 * Battery Indicator 1 Set * Accessories Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.