Description: High Performance: Using this car memory saver tool, the alarm light will keep going without fault code. LED Indicator: With LED indicator design, you can easily know your car. Compact Size: Easy to carry, convenient to use, not winding. Replace Tool: OBD power supply adapter, battery replacing without disconnection. Alarm: The use of the last generation of battery tool when it is not convenient to see the indicator light. The new upgrade battery tool using dribs drabs alarm to listen. Advantage: Reverse connect protection, computer power doesn't lock, the clock is constant, speakers don't locked, the glass is not set. Wrong answer the protection, power is not memory loss, security is not locked, bring their own insurance, throttle is not set, the lamp is not bright. safe and convenient, to improve efficiency. Usage: 1.With a red clip to connect the backup battery cathode, black to connect the negative. 2.Positive and negative polarity will burn the car computer. 3.Plug the red light, and then insert the car OBD plug, this time has been issued by the sound of drops, indicating normal connection. 4.At this time can change the battery, careful operation, pay attention to the replacement of the battery must lock the car, do not open the lights and other electrical equipment, not to the battery positive ground, otherwise it will burn the car OBD socket fuse. 5.For a good battery, the first release of the tools of the red clip, if also drops at this time ring, indicating successful, if there is no sound, indicating that the fuse burned. Specifications: Product Name: Power Off Memory Device Color: As shown Material: Plastic, Thickened copper wire Size: Total Length: About 1.3m/51inch Cable Length: About 1.1m/43inch Package Includes: 1Pc* Car Battery Replacing Tool