The display will accurately assess the battery level and indicate the vehicle state according to the voltage. It is a universal Battery indicator for electric bicycle, scooter, tricycle and other electric vehicle. Universal voltage, suitable for 12 V to 99 V electric bicycles or scooters, identify voltage automatically and real time display. Works for all kind of battery includes lead-acid battery, lithium battery, dry or wet cell. Digital voltage display, intuitive and accurate judgment of remaining capacity and mileage, and it can give vehicle failure according to voltage. Electric vehicle battery indicator set only, other accessories demo in the picture is not included Specification: Type: Electric vehicle battery indicator Material: Plastic Color: Black Size: As pictures shown Quantity: 1 Set Note: No retail package. Please allow 0-1cm 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. Thank you Package includes: 1 Set x Electric vehicle battery indicator