Easy to Use: Connect the positive pole of the spare battery with the red clip and the negative pole of the black .Avoid information loss when the car computer blackoutGood helper for changing car batteryMaintain the car computer memory: dashboard information, digital clock, acoustics, memory seats, ABS, anti-skid system, electric reviewer mirrorSave time, improve efficiency.The car battery is dead and parked on the road? What should I do without tools? Don't worry, our battery leak detection tool will help you solve these possible problems.Car battery generally has a life span of about 3 years. When the car battery is replaced, the whole car will be powered off when the battery is removed from the car. Some modules on the car will lose memory after power off, resulting in data loss. Therefore, when replacing the car battery, an external battery is required to keep the whole car continuous Power supply status so as not to need to reset some modules later or the fault light is on. This line is a tool for externally supplying power to the vehicle when the car's battery is replaced.Colour: blackMaterial: ABSPackage Contents:1 x Car Battery Replacement ToolOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.