Feature: 1. Memory Data Saver: Prevents loss of electronic memory when the vehicle battery is disconnected, preserving vehicle codes and electronic presets. The red clip is connected to the positive pole of the battery, and the black clip is connected to the negative pole. 2. Car Charger: You can use it to power your car computer through the OBDII port or the cigarette lighter socket on your car when changing your car battery. An additional 12V battery is required as a temporary power source. 3. Extension Cable and Connector: Automotive memory saver with extra long 6.5ft (2 m) cable and emergency power connector. You can replace your car battery when you don't have a starter, or get an alternative 12V power supply from another car. 4. Professional Tool: OBDII memory data saver, ideal for keeping computer memory alive while working in the car. Many repairs require disconnecting the battery and connecting it to an external power source. 5. Simple Operation: Just plug the cigarette lighter into this car, then plug the 16pin plug into the OBD port of the car whose battery you want to replace, and you can get an alternative 12V power supply from another car. Specification: Item Type: OBDII Memory Saver Connector Material: ABS Fitment: Universal . Package List: 1 x Car Memory Data Saver1 x Cable1 x Manual