{"id":45602,"date":"2024-07-09T16:04:15","date_gmt":"2024-07-09T08:04:15","guid":{"rendered":"https:\/\/shop.autooltech.com\/?post_type=product&p=45602"},"modified":"2026-05-15T06:42:02","modified_gmt":"2026-05-15T13:42:02","slug":"autool-bt30-ecu-emergency-power-supply-cable-includes-3a-fuse","status":"publish","type":"product","link":"https:\/\/autoolstore.com\/lt\/product\/autool-bt30-ecu-emergency-power-supply-cable-includes-3a-fuse\/","title":{"rendered":"AUTOOL BT30 ECU Emergency Power Supply Cable Includes 3A Fuse"},"content":{"rendered":"
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AUTOOL BT30<\/div>\n

Product Overview<\/h2>\n

The AUTOOL BT30 ECU Emergency Power Supply Cable is an OBD emergency power cable designed to keep the vehicle ECU and electronic systems powered during battery replacement. It helps prevent data loss, reset issues, and electronic setting loss while allowing users to observe real-time voltage and current changes through the built-in high-definition digital display.<\/p>\n

\n ECU Power Supply<\/span>\n Voltage Display<\/span>\n Current Display<\/span>\n 3A Fuse<\/span>\n <\/div>\n
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10-14V<\/span>Operating Voltage<\/span><\/div>\n
<7A<\/span>Operating Current<\/span><\/div>\n
-20\u00b0C~60\u00b0C<\/span>Operating Temp<\/span><\/div>\n
3 Years<\/span>Warranty<\/span><\/div>\n <\/div>\n <\/div>\n
\n \"AUTOOL\n \n Click to enlarge<\/span>\n <\/figure>\n <\/div>\n <\/section>\n\n
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Key Features<\/div>\n

Key Features<\/h2>\n

BT30 combines OBD emergency power support, voltage and current display, leakage detection assistance, insulated clamps, and fuse protection for safer battery replacement and electrical observation.<\/p>\n <\/div>\n\n

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ECU Emergency Power Supply<\/h3>\n

During vehicle battery replacement, BT30 supplies backup power through the OBD interface to help keep the ECU and vehicle electronic systems powered.<\/p>\n <\/article>\n

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Voltage And Current Display<\/h3>\n

The high-definition digital display makes it easier to observe voltage and current changes while the device is operating.<\/p>\n <\/article>\n

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Leakage Detection Support<\/h3>\n

After connecting an external 12V battery and disconnecting the original vehicle battery negative terminal, the current display can help observe vehicle static current and possible leakage current.<\/p>\n <\/article>\n

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Built-In 3A Fuse Protection<\/h3>\n

The built-in 3A fuse helps prevent damage to the device and vehicle ECU when abnormal current passes through the circuit.<\/p>\n <\/article>\n

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Multiple Electrical Protections<\/h3>\n

BT30 supports overcurrent protection, overvoltage protection, and reverse polarity protection to reduce risks caused by circuit faults or incorrect connection.<\/p>\n <\/article>\n

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Insulated Clamp And Cable<\/h3>\n

The insulated cable, fully enclosed clamp design, pure copper clamp teeth, and thickened spring improve grip stability and safer handling.<\/p>\n <\/article>\n <\/div>\n\n

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\"AUTOOL\n Click to enlarge<\/span>\n <\/figure>\n
\"AUTOOL\n Click to enlarge<\/span>\n <\/figure>\n
\"AUTOOL\n Click to enlarge<\/span>\n <\/figure>\n <\/div>\n <\/section>\n\n
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Specifications<\/div>\n

Specifications<\/h2>\n

Review the BT30 operating voltage, operating current, temperature range, interface, fuse, cable length, and structure before use.<\/p>\n <\/div>\n\n

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Product Information<\/td><\/tr>\n
Product<\/td>AUTOOL BT30 ECU Emergency Power Supply Cable<\/td><\/tr>\n
Product Type<\/td>OBD emergency power cable for battery replacement and leakage detection support<\/td><\/tr>\n
Main Function<\/td>Maintains ECU and vehicle electronic system power during battery replacement<\/td><\/tr>\n
Display<\/td>Voltage display and current display<\/td><\/tr>\n
Electrical Parameters<\/td><\/tr>\n
Operating Voltage<\/td>10-14V<\/td><\/tr>\n
Operating Current<\/td><7A<\/td><\/tr>\n
Fuse<\/td>Built-in 3A fuse<\/td><\/tr>\n
Replacement Fuse<\/td>3A or 5A fuse only; do not use a fuse larger than 5A<\/td><\/tr>\n
Operating Temperature<\/td>-20\u00b0C~60\u00b0C<\/td><\/tr>\n
Structure<\/td><\/tr>\n
Interface<\/td>OBD interface<\/td><\/tr>\n
Clamp<\/td>Power clamp with insulated cable<\/td><\/tr>\n
Power Switch<\/td>Built-in ON \/ OFF switch<\/td><\/tr>\n
Cable Length<\/td>0.5m clamp side + 0.4m OBD side<\/td><\/tr>\n
Main Unit Size Reference<\/td>102mm height \/ 48mm width shown in the specification image<\/td><\/tr>\n <\/tbody>\n <\/table>\n <\/div>\n
\n \"AUTOOL\n Click to enlarge<\/span>\n <\/figure>\n <\/div>\n
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\n Product Information<\/summary>\n
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Product<\/span>AUTOOL BT30 ECU Emergency Power Supply Cable<\/strong><\/div>\n
Product Type<\/span>OBD emergency power cable for battery replacement and leakage detection support<\/strong><\/div>\n
Main Function<\/span>Maintains ECU and vehicle electronic system power during battery replacement<\/strong><\/div>\n
Display<\/span>Voltage display and current display<\/strong><\/div>\n <\/div>\n <\/details>\n
\n Electrical Parameters<\/summary>\n
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Operating Voltage<\/span>10-14V<\/strong><\/div>\n
Operating Current<\/span><7A<\/strong><\/div>\n
Fuse<\/span>Built-in 3A fuse<\/strong><\/div>\n
Replacement Fuse<\/span>3A or 5A fuse only; do not use a fuse larger than 5A<\/strong><\/div>\n
Operating Temperature<\/span>-20\u00b0C~60\u00b0C<\/strong><\/div>\n <\/div>\n <\/details>\n
\n Structure<\/summary>\n
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Interface<\/span>OBD interface<\/strong><\/div>\n
Clamp<\/span>Power clamp with insulated cable<\/strong><\/div>\n
Power Switch<\/span>Built-in ON \/ OFF switch<\/strong><\/div>\n
Cable Length<\/span>0.5m clamp side + 0.4m OBD side<\/strong><\/div>\n
Main Unit Size Reference<\/span>102mm height \/ 48mm width shown in the specification image<\/strong><\/div>\n <\/div>\n <\/details>\n <\/div>\n <\/section>\n\n\n\n
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\n \"AUTOOL\n Click to enlarge<\/span>\n <\/figure>\n
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How To Use<\/div>\n

How To Use<\/h2>\n

Use a fully charged 12V spare battery and connect BT30 correctly before removing the original vehicle battery. Keep the vehicle power switch OFF during the operation.<\/p>\n <\/div>\n

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Prepare A Fully-Charged 12V Spare Battery<\/h3>\n

Prepare a fully charged 12V battery before replacing the vehicle battery. Do not use a low-voltage battery as the backup power source.<\/p>\n <\/article>\n

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Connect The Power Clamp<\/h3>\n

Connect the red clamp to the positive terminal and the black clamp to the negative terminal. After correct connection, the screen displays voltage data.<\/p>\n <\/article>\n

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Connect The OBD Interface<\/h3>\n

Connect the BT30 OBD interface to the vehicle OBD port. After the OBD connection is successful, the screen can display current data under the correct test condition.<\/p>\n <\/article>\n

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Replace The Vehicle Battery<\/h3>\n

Remove the old battery and install the new battery while BT30 keeps power supplied through the OBD connection.<\/p>\n <\/article>\n <\/div>\n

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Use Notes<\/h3>\n