Features:1. Compatible with all OBDII ports, this device works properly on any vehicle equipped with an OBDII system from 1996 and later. It helps retain memory settings and preserves electronic configurations controlled by the car memory protector.2. Designed to enhance vehicle protection, the memory protection system offers reliable overload protection. Powered through the 12V socket and connected to the OBD II port, it maintains vehicle codes and electronic presets, making it a practical solution during battery replacement.3. Compared to most OBDII cables on the market, this model uses high-quality copper wire and silicone flame-retardant material, providing superior flexibility and durability.4. Simple to use: connect the clips to the battery terminals and insert the 16-pin plug into the vehicle’s OBD port before replacing the battery.5. Constructed from high-quality aluminum alloy and ABS materials, the device is wear-resistant, heat-resistant, and built for long-term use.Specification:Item Type: Car Battery Testing ToolMaterial: Aluminum Alloy + ABSFitment: Universal for 1996 and Later VehiclesHow to Use:Connect the red clip to the positive terminal and the black clip to the negative terminal of the battery (reversed polarity may damage the onboard computer). Insert the power plug until the red light illuminates, then connect the OBD plug to the vehicle. A beep indicates a successful connection. At this point, battery replacement can proceed. Handle with care, ensure the vehicle is secured, avoid operating lights or other electrical systems, and do not ground the positive battery terminal to prevent fuse damage to the OBD socket. After installation, disconnect the tool with the red clip. If a beep is heard upon removal, the process was successful. If no sound occurs, the fuse may be blown.