▎ 摘　　要

NOVELTY - The utility model claims a battery voltage detecting device for obtaining high-precision fast and simply, comprising box cover, a switch button and a base, the front surface of the box upper cover is embedded with a liquid crystal display screen. the switch button is equipped close to the left side position of the display lamp is below the liquid crystal display screen, the base is mounted on the box cover radiating opening at back of the base is provided with a USB interface, internal middle position of the base is fixed with a central processor, a left side upper part of said central processor fixing with graphene battery. The utility model set the graphene battery, the voltage detecting device can directly supply through graphene battery and solves the detecting device capable of wireless charging, the power supply problem of the charging, it is convenient for the worker to carry, and provided with a USB interface can be directly connected with the detection device through a USB interface is simple and quick, which solves the problem that the traditional detecting device operation is fussy.