DC Battery Meter with Alarm, Car Battery Tester, Battery Monitors, Voltmeter, DC 12V 24V 36V 48V 72V Lead-Acid and Lithium-Ion Battery Tester (Green Light)

【Practical and Essential】This battery voltage tester features a switchable function button. You can press it to check the battery capacity or voltage in real time and turn it off. It also has an alarm function: the battery meter display flashes when the battery capacity drops below 20 percent. 【Digital Display】Designed with a clear LCD digital display, the battery gauge indicator comes with a waterproof PVC screen protector with a bright backlight, allowing you to read the results from different angles. It has low power consumption, with a maximum current draw of 5mA. 【Good Compatibility】This battery capacity indicator is compatible with 12V/24V/36V/48V/60V/72V lead-acid batteries, ternary lithium batteries, and other types of batteries. Lithium-ion polymer, 3-15 series lithium-ion battery, storage battery, water battery, and more. 【Wide Application】 These battery meters with alarm are suitable for golf carts, clubhouses, motorcycles, cars, bicycles, trucks, vehicles, etc., and can meet your various needs. 【What You Get】 Comes with 1 lead-acid and lithium-ion battery tester. The input working voltage ranges from DC 12V to 72V. For installation instructions, please refer to the product description.