12V-84V Lead Acid Battery Indicator Voltage Meter LCD Voltmeter MonitorOOTDTY Features:Lead-acid and lithium battery can be used to visually display the battery charge status; With switch, easy to install and operate, no need external control switch; There is PVC film on the front, the surface can be waterproof; Liquid crystal display, power saving, saving more than 50% power over conventional powerThe following battery is universalLithium battery: 3 string 4 string 5 string. 24 String 25 String 26 String Lead-Acid: 12V 24V 36V 48V 60V 72V 84V Technical Data:Voltage Range: 9-100V Operating Current: lt; 5mAThe Display Color: LCD Percentage%/VoltageColor: GreenWaterproof: Surface WaterproofAbout InstallationInstallation Method: Shell with Snap (Without Screws)Product Size: 61.3*33.3*13.5mmBuilt-in Size: 58.5*28.5mmPackage Included:1*12V-84V Acid Battery Voltage Indicator1*CableHow to Set (If You Don't Understand, Welcome to U for Help)S1:%/V Rotate the Display in 2sPower Percentage and Voltage are displayed sequentially and automatically; S2: sleep idle within 10 secondsAutomatically sleep after displaying the battery capacity for 10 seconds, save power, press the function key to wake up the power display for 10 seconds; S3: turn on the backlightThe power display turns the power backlight on or off; S4: show logo (applicable to small battery icon)The Logo icon is at the bottom of the battery symbol on the left side of the LCD display, turn on and show the logo; S5: discharge mode selectionPower displays two kinds of battery discharge curve, different environments convert to select the corresponding battery discharge modes; Setup Procedure1. Unplug the power module, press and hold the settings button until the power module is powered. The display shows the current power setting parameters;2. Press the setting button to select P/L/F ,(P=12V lead acid, L=3.7V lithium battery, F=3.2V lithium iron phosphate battery); 3 Press the function key to set the battery chain number, according to the function keys, and adjust the up or down key to select the number of batteries in series;4. Long press the function key to enter the advanced setting interface, use the setting key to select S1-S5, the enter key to select or cancel the current mode;5. Recharge the power after setting. E.g. 10 lithium battery power, turn on the power indicator and automatic voltage rotation (S1 mode)Operation: disconnect the power of the display module, press and hold the setting button, power the power module, press the setting key for a short time to select L, press the function key to select 10, press the function key for a long time to select S1 and turn the power back on.