JTC-4726A Obd-Ii Power Supply Adapter

1. Key Features

The JTC-4726A OBD-II Power Supply Adapter is a specialized memory-saving tool designed to prevent data loss when changing or replacing a vehicle battery. By connecting a backup power source directly to the car's OBD-II port, it ensures an uninterrupted power supply to on-board electronics. It offers flexible dual power source options: a 12V external battery or a 9V dry battery. Equipped with 2 diagnostic LED indicators, the adapter clearly shows whether the backup power supply has sufficient voltage and verifies if the connection to the vehicle is correctly established.

 

2. Practical Applications

The JTC-4726A is an indispensable diagnostic auxiliary tool for automotive workshops, service centers, and battery replacement specialists. It is actively used during battery maintenance to sustain voltage for sensitive vehicle modules. Using this adapter prevents the erasure of critical stored memory, including audio codes, seat adjustments, clock settings, and adaptive learning parameters in the Engine Control Unit (ECU), avoiding the need for expensive system re-programming.

 

3. How to Use

Before disconnecting the main battery, connect the backup power source (either a 12V battery or a 9V dry cell) to the input of the JTC-4726A. Check the dual LED indicators to confirm that the backup power is sufficient. Plug the OBD-II connector of the JTC-4726A firmly into the vehicle's OBD-II port. Once the LED verifies a correct connection, proceed with replacing the vehicle's battery. After the new battery is fully installed and secured, disconnect the OBD-II adapter from the port.

 

4. Device Maintenance

Always disconnect the backup power source from the JTC-4726A immediately after use. Clean the OBD-II pin connectors and outer casing with a soft, dry cloth to remove dirt or oil. Store the adapter in a clean, dry location free from excessive humidity and direct sunlight. Periodically inspect the wiring harness and LED lights to ensure proper function and reliable electrical conductivity for future maintenance tasks.