LED Flash for low charge and high charge warning. Specifically designed to monitor the power level of battery during charging or discharging. Memory option to recall last charge level. 10-segment LED bar graph display. Wide operating voltage and temperature range. Hour meter features a 6-digit, 7-segment LCD display. Operating and storage temperature: -40°C to 85°C. Operating current: 20 mA nominal. Memory capacity: CMOS EEPROM. Compatible with golf carts and other equipment powered by 12V, 24V, 36V, 48V, or 72V DC batteries. Product dimensions: 5.8 x 5.1 cm (2.3 x 2.0 in). Note: When connecting the indicator to the battery, confirm the battery voltage first and connect the electrode to the correct pin on the back of the indicator. Incorrect voltage connection may damage the battery indicator. Package includes: 1 x Battery Indicator with Hour Meter, 1 x Pack of Accessories, 1 x Manual (English). Note: Lighting and display settings may cause slight color variations. Measurement error allowance: +/- 1-3 cm.