Practical Designs: The battery capacity voltage indicators are designed with switched function button, you can press to check the cattery capacity or real-time voltage and turn off, with alarm design, the battery meter display will flash when the battery capacity is less than 20 percentApplicable objects: our battery capacity monitoring gauge indicators can be compatible with lead-acid batteries 12V 24V 36V 48V 72V acid, ternary lithium battery, polymer lithium ion battery, 3-15 series lithium ion battery, storage battery, water battery and moreDigital display LCD: Battery capacity gauge indicators come with a waterproof PVC screen protector with bright backlight, which allows you to read the results on the clear LCG screen from different angles, low power consumption 'working energy and the maximum is 5 mAWide applications: battery meters with alarms can be applied to different machines and places such as garden, home, office and more, durable and can serve you for a long time, meeting your different needs and practical battery indicators will give you a nice experienceFeatures:Switch button: you can press to check the cattery capacity or real-time voltage and turn it off.Alarm: Battery meter display flashes when battery capacity is less than 20%.Suitable for: 12V/ 24V/ 36V/ 48V/ 60V/ 72V/ 84V lead acid battery, ternary lithium battery, polymer lithium ion battery, 3-15 series lithium ion battery, storage battery, water battery and more yet.LCD digital display: PVC waterproof screen poterctor with bright backlight clearly shows the results.Note: They cannot be applied to lithium iron batteries phosphate, 1 to 2 Li batteries in series and more than 15 Li batteries in series.Features:Operating voltage: DC 12-84VWorking current: 5 mA maxWorking temperature: 0℃ -40℃Display: capacity / voltageBacklight: as picture showsMaterial: ABSNote: Due to the difference between lighting and screen settings, the color of the product may be slightly different from the picture. As manual measurement is different, please allow slight size difference.Shipping quantity: 4 pieces