This fuel gauge is suitable for 6V, 12V, 24V, 36V, 48V, 60V, 72V, 84V, 96V battery (common for batteries below 96V), and can also measure lithium batteries, polymer batteries, and nickel-metal hydride batteries.It can also be used for other /voltage measurement purposes. Double display battery + voltage at a glance. The display is more intuitive. The upper 8 bars show the battery (2 red and 6 green). Downlink voltmeter (display battery voltage), voltmeter decimal point automatic shift accuracy is higher.It has a wide range of applications, including lithium battery packs, lead-acid batteries, car batteries, electric car batteries, and many other types of batteries and electric equipment.The calculation of the existing voltage is the same as that of the display meter of an electric vehicle. The meter head automatically recognizes the voltage and electricity, and has a reverse connection protection function (reverse connection will not burn).Instructions for use: The two-wire system of the meter head can directly test the battery.Parameter:Voltage tolerance: 1%8 levels of : 10% 25% 40% 50% 60% 75% 90% 100%fullWorking current: 5-15 maRefresh speed: 300mS onceDisplay mode: three-digit 0.56inch LED digital tubeVoltage color: red, blueLead length: about 20cmDimensions: 48 x 29 x 22 mm, length X width X thicknessMounting hole: 46 x 27 mmWorking temperature: -20~65DIY Supplies: ELECTRICALDisplay Type: Digital Only Supply: DCcolor:As shownMaterial:plasticPackage Contents:10 x Car Battery Charge Level Indicator (red digital display 72V)Only the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.