3.7V 2S 3S 4S 18650 Li-ion Lipo Lithium 12V Rechargeable Lead Acid Level Gauge Tester LCD Display Meter Module Capacity Voltage Features:Ultra-thin power display, 5 LED indicators, the display is more intuitive and more beautiful. It can be used in a wide range of applications, such as lithium batteries, lead batteries, lithium iron phosphate, and electric vehicles. Li-ion battery charge level display parameter: (2% error should be acceptable)1. Battery voltagegt; N*3.2V, 1 LED is lit (Note: N=Battery)2. Battery voltagegt; N*3.4V, 2 LEDs light up3. Battery voltagegt; N*3.6V, 3 LEDs4 lights up. Battery voltagegt; N*3.8V, 4pcs LEDs light up12V lead-acid battery display range:(4S lithium iron phosphate battery can be acceptable)1. The battery voltage is more than 11V, 1 LED2 lights up. The battery voltage exceeds 11.6V, 2 LEDs3 light up. The battery voltage exceeds 12.3V, 3 LEDs4 light up. Battery voltage exceeds 13V, 4 LEDs light up3.7V lithium battery, 4.2V full charge2S 7.4V lithium battery, 8.4V full charge3S 12V lithium battery, 12.6V4S lithium battery full charge, 16.8V12V full charge lead acid battery, 12V car batteryInstructions:1. Connect the positive and negative terminals of the display to the positive and negative terminals of the battery under test. Press the red button with your finger and the LED will light up. View battery power in real time.2. Release your finger, the LED will turn off after 3-5 seconds and will not consume power when it is static.3. With reverse connection function, even if the positive and negative reverse gear does not burn out, adjust it. Tips1. A total of 5 small lights, display power, suitable for reverse converter lithium battery power tips2. 3.7V type with 1 pc. Red power indicator, 4 pcs. Green battery indicator; The others from 1 pc. Red power indicator, 4 pcs. Blue Battery IndicatorSpecification:Types: 3.7V 1S Lithium Battery, 2S Lithium Battery, 3S Lithium Battery, 4S Lithium Battery, 12V Lead Acid Battery (12V Car Battery)Material: Circuit BoardDimensions: 40x1 5mm/1.57x0.59 inchCable Length: 120MMColor: BlackQuantity: 1pcNote: 1. Please allow 0-3mm 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. Thank you!Package Included:1 x Battery Indicator Module