1It works for 12V/24V, 36V, 48V/72V battery 2LED Flash for low charge and high charge warning 3Specifically designed to monitor the power level of battery while charging or discharging 4Memory option to recall quantity of electricity 5Hour meter features a 6-digit, 7 segment LCD display, easy to read Features: It works for 12V/24V, 36V, 48V/72V battery. LED Flash for low charge and high charge warning. Specifically designed to monitor the power level of battery while charging or discharging. Display of 10 segment LED bar graph. Memory option to recall quantity of electricity. High reliability, wide operating voltage and temperature range. Hour meter features a 6-digit, 7 segment LCD display, easy to read. Specifications: Operating Voltage: 12V/24V, 36V, 48V/72V Operating Current: 20mA nominal Operating Temperature: -40 - +85 Memory capacity: CMOS EEPROM Package Weight: approx. 68g Fitment: for Golf Cart or other 12V/24V/36V/48V/72V volt DC battery Package Included: 1 x Battery Indicator 1 x Set of Accessories Note: Before you connect the indicator to battery, please confirm the voltage of your battery first, and connect the positive electrode to the correct pin of the indicator on the back, wrong voltage connection maybe cause the battery indicator damage.