Features: This multimeter can be used as battery voltage meter, battery capacity tester for or car, marine, RV, boat, etc. Digital battery monitor is suitable for DC 7-70V lithium battery, lead-acid battery & lithium iron phosphate battery. The battery status reader adopts clear LCD color screen, displays battery capacity & voltage. The battery power detector comes with protective shell & waterproof surface. The battery voltage tester is featured with switched function button, you can press to check the cattery capacity, temperature & voltage. Package Includes: 1x Battery Monitor Specifications: Material: Plastic Size: 5.8x2.8cm/2.28x1.1in Display Color: Blue/Green/Red/White(optional) The item is supplied with 12V lead acid battery by default (low voltage 10.4V, full battery 13.2V). If you use other battery voltages, please set them before using them Lead acid battery: the product uses 12V lead acid battery by default (P12 is displayed on the page). If you need to set other lead acid battery voltage specifications, set them on the customized page Ternary lithium: press the SET button in the upper right corner for 2 seconds to enter the setting page and switch to L3. Wait 2 seconds to save the Settings and automatically return to the main page. note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.