Practical to use: you will receive 1 piece of battery meter, the battery voltage tester is featured 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 lower than 20 percent Easy to read: designed with clear LCD digital display, the battery gauge indicator comes with PVC waterproof screen protector with bright back-light, which makes you can read the results from different angles, low working power consumption and the max is 5 mA For different battery: the battery capacity indicator is compatible with 12V/ 24V/ 36V/ 48V/ 60V/ 72V/ 84V acid battery, ternary lithium battery, polymer lithium-ion battery, 3 -15 series lithium ion battery, storage battery, water battery and more Working voltage input: the working voltage input ranges from DC 12V to 84V, which can automatically detect to the accurate voltage according to the battery voltage Widely applicable: the battery capacity voltage indicator can be placed in different places, such as garden, home, office and more, reliable and can be applied you for a long time, meeting your different needs, making life more convenient
Features:

Switch button:
You can press to check the battery capacity or real-time voltage and turn off.

Alarm:
The battery meter display will flash when the battery capacity is lower than 20 percent.

Fit for:
12V/ 24V/ 36V/ 48V/ 60V/ 72V/ 84V acid battery, ternary lithium battery, polymer lithium-ion battery, 3-15 series lithium ion battery, storage battery, water battery and more.

Specifications:
Working voltage: direct current 12-84V
Working current: 5 mA max
Working temperature: 0-40 degrees Celsius
Display: capacity/ voltage
Material: ABS
Product dimension: 2.41 x 1.31 x 0.53 inches/ 61.3 x 33.3 x 13.5 mm
Mounting hole dimension: 2.3 x 1.12 inches/ 58.5 x 28.5 mm

Package includes:
1 x Battery meter with alarm