OOTDTY 8-70V LCD Acid Lithium Battery Capacity Indicator Voltmeter/Voltage Meter Features:Longer LifeTouch Switch Button, Perfect FeelDual IC Control, More StableThe product is suitable for lead acid 12V, 24V, 36V, 48V (8-70V)The product is suitable for 3.7V multi-platform series lithium battery, 2 string, 3 string, 4 string, 5 string, 6 string, 7 Strings & 8 Strings 9 Strings 10 Strings 11 Strings 12 Strings 13 Strings 14 Strings 15 StringsS1:%/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. Specifications:Voltage Range: 8-70V Material: Plastic Dimension: app.61.3mmx33.3mmx13.5mm/2.41'' x 1.31'' x 0.53'' Cable Length: app.30cm/11.81'' Case Color: Black Quantity: 1 Set Note: 1. Please allow 1-3cm error due to manual measurement. Pls make sure you do not mind before bidding.2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package Included:1 x Battery Capacity & Voltage Tester (Without Retail Package)1 x Cable