Description: Maintain the car computer memory: dashboard information, digital clock, acoustics, memory seats, ABS, anti-skid system, electric reviewer mirror. Avoid information loss when the car computer blackout Good choice for changing car battery. Model: BT-30 Cable length: 80cm Material: Plastic Metal Color: Black and Red Specification: Instructions: Red clip plug to red,black clip plug to black,(reverse will be torched cars computers) After the red light on，insert the car OBD plug Plug connection regular,which would make a noise Change the storage battery with careful operations Please mind do not open the light or other using power device,and do not touch metal with the positive pole of accumulator,Otherwise it will burn car OBD socket of the fuse After change the accumulator,loose the red clip first，if the sound still exist, then the replacement succeed, if not, then the fuse might burned. By OBD diagnostic directly connected to the car computer, normal battery with a red light, after insert car OBD plug drops drops sound, with a 12V battery power supply, the absolute guarantee in battery car computer Settings don't lost memories. Package Includes: 1 x OBDII Battery Clip Cable