Usage Tips:GY-6S 12V Lead-acid Battery Power Meter Lithium Battery Capacity Indicator Display Tester Percentage Voltmeter 1. 12V battery, battery, water battery and lithium battery can be used for liquid crystal display 2. Display percentage, visually display battery power, directly connect battery positive and negative to display battery power 3. Compatible with the following batteries: - Lead acid: 12V, 24V, 36V, 48V - Lithium battery: 2 strings lithium battery, 3 strings lithium battery, 4 strings lithium battery, 5 strings lithium battery, 6 strings lithium battery, 7 strings lithium battery, 8 strings lithium battery, 9 strings lithium battery, 10 strings lithium battery, 12 strings lithium battery, 13 strings lithium battery, 14 strings Lithium battery, 15 lithium battery 4. The battery has its own button, which allows you to modify the battery specifications yourself 5. Dual display of power percentage voltage, you can also use the button to switch off the power, double button design, quick and easy to set up 6. Working voltage: 6-63V 7. Working current: less than 5MA 8. Sleep power consumption: 12uA (12V test) 9. Net weight: 18.7g 10. Waterproof level: surface waterproof 11. Color: green light 12. Dimensions: 61.3X33.3X13.5mm 13. Hole size: 58.5X28.5mm 14. Installation method: Open an installation hole and press the power to enter. The battery comes with a buckle, no installation screws