1Battery Display: Battery meter has a powerful battery power test system and a unique design. It automatically recognizes the current remaining power of the battery when it is powered on, and displays it in real time. 2Voltage Function: Automatically identify 12V 24V, the current voltage greater than 16.5V is automatically identified as 24V, and the current voltage is less than 16.5V, identified as 12V 3LED Display: The battery gauge has a 5 segment LED bar graph, each segment will be displayed in two ways, the light flashes or lights up, and 10 levels of battery capacity are displayed. 4Application: Battery gauge is suitable for 12V acid storage battery, lithium cobalt oxide battery, lithium iron phosphate battery. Widely used in motorhomes, electric vehicles, club car, AGVs and other vehicles. 5Unique Design: Battery capacity monitor has , Ce and Rohs certification, easy installation by screw or zip ties, IP65 waterproof grade, automatic sleep, switch on and off by On button, etc.