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BT30 OBD emergency power supply cable

The AUTOOL BT30 is a newly upgraded OBD emergency power supply cable that provides power to the vehicle through the OBD interface, ensuring that electronic data is not lost when the battery is replaced and preserving original personalized settings. Equipped with an HD digital display, it shows voltage and current, and easily enables leakage detection.

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Working Principle

The AUTOOL BT30 OBD emergency power supply cable features a power management system with a built-in processor. It connects to the vehicle’s OBD interface via a dedicated OBD plug, while the other end is equipped with a power clamp to connect to a backup battery. When replacing the vehicle’s battery, the backup battery continues to provide power support to the ECU.

Features and Functions

Advanced Core Processor: Using the AUTOOL BT30 ensures that electronic data is not lost when the vehicle’s battery is replaced, preserving settings such as seat positions, radio presets, dashboard information, electronic throttle settings, and more.

HD Digital Display: Provides real-time voltage and current readings, easily enabling leakage detection, preventing the use of depleted batteries, and monitoring the vehicle’s static current when the engine is off.

3A Fast-Blow Fuse: When the internal current of the AUTOOL BT30 emergency power supply cable exceeds 3A, the fuse quickly blows, protecting the memory saver and the vehicle’s safety.

Multiple Safety Protection Features: Includes reverse polarity protection, current protection, and voltage protection (cut-off protection activates when voltage exceeds 16V).

Fully Encased Insulated Clamps: The surface is made of fully insulated material with high resistivity, providing excellent leakage protection during the connection of the battery.

Wide Vehicle Compatibility: Suitable for a wide range of vehicle models on the market.

Operation Steps

Note: During battery replacement, all high-current electrical devices on the vehicle, such as seat heaters, headlights, air conditioning, and the four doors, should be turned off to prevent excessive current.

Battery Replacement Steps:

1. Prepare a fully charged 12V backup battery.

2. Connect the power clamps to the backup battery: the red clamp to the positive terminal and the black clamp to the negative terminal. (After a successful connection, the screen will display the voltage data.)

3. Connect the device’s OBD plug to the vehicle’s OBD interface.

4. Remove the battery that needs to be replaced from the vehicle and replace it with a new one.

Leakage Detection Steps

Note: The time for the vehicle’s computer to enter sleep mode varies by model. Please be patient during measurement to accurately determine if there is any leakage current.

1. Prepare a fully charged 12V backup battery.

2. Connect the power clamps to the backup battery: the red clamp to the positive terminal and the black clamp to the negative terminal. (After a successful connection, the screen will display the voltage data.)

3. Connect the device’s OBD plug to the vehicle’s OBD interface.

4. Disconnect the vehicle’s negative terminal. At this point, the current data may show slight fluctuations.

5. Remove the fuses one by one from the vehicle’s fuse box and observe the changes in current on the BT30 memory saver display.

6. If the current value suddenly increases, it indicates that the circuit associated with the fuse may have a leakage issue.

BT30
Operating Voltage 10~14V
Operating Current <7A
Operating Temperature -20°C-60°C

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