1. Ternary lithium battery L measurement: L03 string to L07 string (-off memory)2. Lead-acid battery P measurement: DC12V, DC24V (-off memory)3. Iron-lithium battery F measurement: F03 series to F08 series (-off memory)4. Custom setting high and low voltage range: DC8-30V5. The front is the on/off button, and the back is the setting button. Please set the parameters installing and using1. Voltage detection range: DC8-30V2. Working current: Less than15mA (without charging function)3. Display mode: LCD screen4. : 61405. Temperature display 6. USB output: QC2.0, QC3.0, maximum output 18W (5V-3.4A, 9V-2A, 12V-1.5A)7. Typec output: QC2.0, QC3.0, maximum output 18W (5V-3.1A, 7V-2.4A, 9V-2A, 12V-1.5A)8. Detection accuracy: 1%9. Refresh speed: 500ms/time10. Installation size: 58.5mm x 36.5mm11. Appearance 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 settings;Mode 5 -- low voltage alarm setting (alarm when the voltage is lower than this parameter);Mode 6 -- backlight time setting;Backlighting Colour:BlueMaterial:plasticPackage Contents:1 x Battery tester1 x WireOnly the above package content, other products are not included.Note: Light reflection and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.