Ternary lithium battery L measurement: L03 string to L07 string (power-off memory)Lead-acid battery P measurement: DC12V, DC24V (power-off memory)Iron-lithium battery F measurement: F03 series to F08 series (power-off memory)Custom setting high and low voltage range: DC8-30V. The front is the on/off button, the back is the setting button, set the parameters installing and usingVoltage detection range: DC8-30V. Working current: Less than 15mA (without charging function). Display mode: LCD screen. USB output: QC2.0, QC3.0, maximum output 18W (5V-3.4A, 9V-2A, 12V-1.5A). Typec output: QC2.0, QC3.0, maximum output 18W (5V-3.1A, 7V-2.4A, 9V-2A, 12V-1.5A)Detection accuracy: 1%Refresh speed: 500ms/timeInstallation size: 58.5mm x 36.5mmAppearance size: 61mm x 40mm x 22mmMode description On the main page, press and hold the on/off button for 2 seconds to enter the mode setting page, and then press and hold the back setting button for 2 seconds to exit the setting page and return to the main page.Mode 1 -- lead acid P setting;Mode 2 -- Ternary Lithium L setting;Mode 3 -- FeLiF setting;Mode 4 -- custom high and low voltage ;Mode 5 -- low voltage alarm setting (alarm when the voltage is lower than this parameter);Mode 6 -- backlight time setting;Notice:There are two kinds of lithium batteries (ternary lithium L and iron lithium F), let tell you the difference; first, fully charge the battery first, the saturation voltage of a series of ternary lithium batteries is DC4.2V, and the saturation voltage of a series of iron lithium batteries is DC4.2V. It is DC3.6V; for example: the saturation voltage shows 29.4V (7 strings), this is the ternary lithium battery, and then select the parameters according to the setting mode of the ternary lithium battery.Screen color:BlueColour:blackMaterial:plasticPackage Contents:1 X Battery power detector1 X lineOnly the above package content, other are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real . The measurement allowed is +/- 1-3cm.