Description: The battery indicator can be used as hour meter and voltmeter. Displayed the actual battery capacity and percentage in 10 segments at the same time. LED will be flashing when at low charge. High reliability, low cost and humanized design. Fiment:for universal batteries, including lead-acid battery, GEL battery, LiFe battery, battery, etc. Specification: Material: Metal Product Size( D x H ): 60 x 50mm/2.36 x 1.97inch Screen Size(L x W): 30 x 25mm/1.18 x 0.98inch Rated Input Voltage: DC 12V/24V/36V/48V/72V Package Includes: 1 Piece Battery Indicator 1 Pack of accessories 1 Piece English User manual Note: Please connect the correct voltage to your battery indicator as noted on the meter