OBD battery replacement cable non-stop conversion tool, car power-off memory cable replacement battery detection tool with 5A Fuse Wire length: 1.1 meter Notice: 1. Connect the positive pole of the backup battery with a red clip and the negative pole with a black clip (reversing the connection will burn the car computer) 2. After the red light on the plug lights up, plug in the OBD plug of the car. At this moment, there was a continuous beeping sound. It means the plug connection is normal. 3. You can now safely replace the battery, please handle it carefully. Attention: When replacing the battery, please make sure to lock the car and do not turn on electrical devices such as headlights. Never connect the positive pole of the battery to the ground. Otherwise, it will burn out the fuse of the car's OBD socket. Causing the failure of continuously swapping batteries. 4. After replacing the battery, first loosen the red clip of this tool. If the tool still beeps at this time, it means it has succeeded. If it doesn't sound, it means the fuse in the car is blown.