{"id":45602,"date":"2024-07-09T16:04:15","date_gmt":"2024-07-09T08:04:15","guid":{"rendered":"https:\/\/autoolstore.com\/?post_type=product&#038;p=45602"},"modified":"2026-09-20T08:34:24","modified_gmt":"2026-09-20T16:34:24","slug":"autool-bt30-ecu-emergency-power-supply-cable-includes-3a-fuse","status":"publish","type":"product","link":"https:\/\/autoolstore.com\/product\/autool-bt30-ecu-emergency-power-supply-cable-includes-3a-fuse\/","title":{"rendered":"AUTOOL BT30 ECU Backup Power Cable"},"content":{"rendered":"\n\n\r\n<div><div>\r\n<div class=\"autool-page-shell\"><main class=\"autool-description autool-product-page\" data-autool-lightbox=\"off\" data-autool-mobile-nav=\"false\" data-autool-rail-controls=\"true\" id=\"bt30-ecu-backup-power-cable-product-page\"><section class=\"autool-section autool-product-hero autool-section--overview\" data-autool-nav=\"Overview\" data-autool-surface=\"dark\" id=\"autool-overview\"><div class=\"autool-layout-container autool-product-hero__grid\">\r\n<div class=\"autool-product-hero__copy\">\r\n<p class=\"autool-product-hero__eyebrow\">AUTOOL BT30 \u00b7 Fused OBD Memory-Saver Power Cable<\/p>\r\n<h2 class=\"autool-product-hero__title\">Supply Temporary Backup Power During Battery Replacement<\/h2>\r\n<p class=\"autool-product-hero__lead\">Maintain temporary vehicle memory during an approved 12 V battery replacement with a suitable 10\u201314 V backup source. A fused OBD connection and live voltage\/current display help technicians monitor the temporary supply while following the vehicle procedure.<\/p>\r\n<ul aria-label=\"BT30 key benefits\" class=\"autool-product-hero__capabilities\">\r\n<li>10\u201314 V Backup Source<\/li>\r\n<li>Live Voltage \/ Current Display<\/li>\r\n<li>Fused OBD Path<\/li>\r\n<li>0.5 m Clamp + 0.4 m OBD Leads<\/li>\r\n<li>Temporary Memory Support<\/li>\r\n<\/ul>\r\n<nav aria-label=\"BT30 sections\" class=\"autool-product-hero__actions\"><a class=\"autool-product-button autool-product-button--primary\" href=\"#autool-features\">Explore Features<\/a><a class=\"autool-product-button\" href=\"#autool-use\">View Workflow<\/a><a class=\"autool-product-button\" href=\"#autool-specifications\">View Specs<\/a><\/nav>\r\n<\/div>\r\n<figure class=\"autool-product-hero__media\"><img alt=\"AUTOOL BT30 ECU emergency power supply cable main product image\" decoding=\"async\" fetchpriority=\"high\" loading=\"eager\" src=\"https:\/\/autoolstore.com\/wp-content\/uploads\/2025\/10\/5a3b4828-b883-435c-99aa-d989a16dc15c.png\"\/><\/figure>\r\n<\/div><\/section><aside aria-label=\"BT30 at a glance\" class=\"autool-product-metrics\"><div class=\"autool-product-metrics__inner\">\n<div class=\"autool-product-metric\"><strong>10\u201314 V DC<\/strong><span>Backup Source<\/span><\/div>\n<div class=\"autool-product-metric\"><strong>3 A<\/strong><span>Listed Fuse<\/span><\/div>\n<div class=\"autool-product-metric\"><strong>Voltage \/ Current<\/strong><span>Live Display<\/span><\/div>\n<div class=\"autool-product-metric\"><strong>OBD<\/strong><span>Vehicle Connection<\/span><\/div>\n<\/div><\/aside><section class=\"autool-section autool-product-section--soft autool-section--value\" data-autool-surface=\"base\" id=\"autool-features\"><div class=\"autool-layout-container\">\r\n<header class=\"autool-section-head\"><p class=\"autool-subhead\">Key Features<\/p>\r\n<h2 class=\"autool-title\">Monitor Temporary 10\u201314 V Backup Power<\/h2><\/header><div class=\"autool-product-grid autool-product-grid--3 autool-product-rail\" data-autool-rail=\"features\">\r\n<article class=\"autool-product-card\"><h3>Temporary ECU Backup Power During Battery Replacement<\/h3>\r\n<p>During vehicle battery replacement, BT30 supplies backup power through the OBD interface to help keep the ECU and vehicle electronic systems powered.<\/p><\/article><article class=\"autool-product-card\"><h3>Voltage And Current Display<\/h3>\r\n<p>The high-definition digital display makes it easier to observe voltage and current changes while the device is operating.<\/p><\/article><article class=\"autool-product-card\"><h3>Observe Static and Possible Leakage Current<\/h3>\r\n<p>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><\/article><article class=\"autool-product-card\"><h3>Built-In 3A Fuse Protection<\/h3><p>BT30 uses a 3 A fuse for the cable and output circuit. Match the fuse type and rating to the supplied cable and holder; confirm the operating-current requirement with AUTOOL before ordering.<\/p><\/article><article class=\"autool-product-card\"><h3>Multiple Electrical Protections<\/h3>\r\n<p>BT30 supports overcurrent protection, overvoltage protection, and reverse polarity protection to reduce risks caused by circuit faults or incorrect connection.<\/p><\/article><article class=\"autool-product-card\"><h3>Insulated Clamp And Cable<\/h3>\r\n<p>The insulated cable, fully enclosed clamp design, pure copper clamp teeth, and thickened spring improve grip stability and safer handling.<\/p><\/article><article class=\"autool-product-card\"><h3>10\u201314V Backup Supply<\/h3>\r\n<p>BT30 operates from a 10\u201314V source, with a 0.5m clamp-side cable and 0.4m OBD-side cable for the service connection.<\/p><\/article><article class=\"autool-product-card\"><h3>ECU Power During Battery Replacement<\/h3>\r\n<p>Connected to a suitable spare battery and the vehicle OBD interface, BT30 supplies backup power during battery replacement to help keep vehicle electronics powered.<\/p><\/article><article class=\"autool-product-card\"><h3>Service Boundary<\/h3>\r\n<p>Use only for approved temporary ECU\/memory support during battery replacement. Do not use as a charger, jump starter, or programming supply.<\/p><\/article>\r\n<article class=\"autool-product-card\"><h3>Operating Temperature<\/h3><p>Operating temperature: -20\u00b0C to 60\u00b0C.<\/p><\/article><article class=\"autool-product-card\"><h3>3 Years Warranty Support<\/h3><p>Main unit: 3-year warranty. Standard accessories: 1-year warranty. <a href=\"https:\/\/autoolstore.com\/warranty-policy\/\" rel=\"noopener\" target=\"_blank\">Warranty Policy<\/a>.<\/p><\/article><\/div>\r\n<\/div><\/section><section class=\"autool-section autool-section--workflow autool-section--workflow-anchor\" data-autool-surface=\"dark\" id=\"autool-use\"><div class=\"autool-layout-container\">\r\n<header class=\"autool-section-head\"><p class=\"autool-subhead\">How to Use<\/p>\r\n<h2 class=\"autool-title\">Connect Backup Power Before Battery Removal<\/h2><\/header><div class=\"autool-workflow\" data-autool-workflow=\"\" data-workflow-mode=\"panels\">\r\n<div aria-label=\"bt30-ecu-backup-power-cable workflow\" class=\"autool-workflow__tabs\" data-workflow-tabs=\"\" role=\"tablist\">\r\n<button aria-controls=\"bt30-ecu-backup-power-cable-panel-0\" aria-selected=\"true\" class=\"autool-workflow__tab\" data-workflow-step=\"0\" id=\"bt30-ecu-backup-power-cable-tab-0\" role=\"tab\" tabindex=\"0\" type=\"button\">01<br\/><wbr\/>Confirm<wbr\/> The<wbr\/> Procedure<\/button><button aria-controls=\"bt30-ecu-backup-power-cable-panel-1\" aria-selected=\"false\" class=\"autool-workflow__tab\" data-workflow-step=\"1\" id=\"bt30-ecu-backup-power-cable-tab-1\" role=\"tab\" tabindex=\"-1\" type=\"button\">02<br\/><wbr\/>Prepare<wbr\/> The<wbr\/> Vehicle<\/button><button aria-controls=\"bt30-ecu-backup-power-cable-panel-2\" aria-selected=\"false\" class=\"autool-workflow__tab\" data-workflow-step=\"2\" id=\"bt30-ecu-backup-power-cable-tab-2\" role=\"tab\" tabindex=\"-1\" type=\"button\">03<br\/><wbr\/>Connect<wbr\/> The<wbr\/> Spare<wbr\/> Source<\/button><button aria-controls=\"bt30-ecu-backup-power-cable-panel-3\" aria-selected=\"false\" class=\"autool-workflow__tab\" data-workflow-step=\"3\" id=\"bt30-ecu-backup-power-cable-tab-3\" role=\"tab\" tabindex=\"-1\" type=\"button\">04<br\/><wbr\/>Connect<wbr\/> The<wbr\/> OBD<wbr\/> Lead<\/button><button aria-controls=\"bt30-ecu-backup-power-cable-panel-4\" aria-selected=\"false\" class=\"autool-workflow__tab\" data-workflow-step=\"4\" id=\"bt30-ecu-backup-power-cable-tab-4\" role=\"tab\" tabindex=\"-1\" type=\"button\">05<br\/><wbr\/>Replace<wbr\/> And<wbr\/> Disconnect<\/button>\r\n<\/div>\r\n<div class=\"autool-workflow__position\">\r\n<span class=\"autool-workflow__position-label\">Step progress<\/span><span class=\"autool-workflow__progress\"><span class=\"autool-workflow__progress-bar\" data-workflow-progress=\"\"><\/span><\/span><span class=\"autool-workflow__position-count\" data-workflow-count=\"\">1 \/ 5<\/span>\r\n<\/div>\r\n<div class=\"autool-workflow__content\">\r\n<div class=\"autool-workflow__main\">\r\n<div class=\"autool-workflow__panels\">\r\n<article aria-labelledby=\"bt30-ecu-backup-power-cable-tab-0\" class=\"autool-workflow__panel\" data-workflow-panel=\"\" id=\"bt30-ecu-backup-power-cable-panel-0\" role=\"tabpanel\" tabindex=\"0\"><h3 class=\"autool-workflow__title\">Confirm The Procedure<\/h3><p>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><p>Verify that the vehicle permits OBD backup power and identify settings or systems affected by battery replacement.<\/p><\/article><article aria-labelledby=\"bt30-ecu-backup-power-cable-tab-1\" class=\"autool-workflow__panel\" data-workflow-panel=\"\" hidden=\"\" id=\"bt30-ecu-backup-power-cable-panel-1\" role=\"tabpanel\" tabindex=\"0\"><div class=\"autool-workflow__number\">02<\/div>\r\n<h3 class=\"autool-workflow__title\">Prepare The Vehicle<\/h3>\r\n<p class=\"autool-workflow__description\">Switch off loads, secure the vehicle, keep the replacement battery leads insulated, and inspect the BT30 fuse and cable.<\/p><\/article><article aria-labelledby=\"bt30-ecu-backup-power-cable-tab-2\" class=\"autool-workflow__panel\" data-workflow-panel=\"\" hidden=\"\" id=\"bt30-ecu-backup-power-cable-panel-2\" role=\"tabpanel\" tabindex=\"0\"><div class=\"autool-workflow__number\">03<\/div>\r\n<h3 class=\"autool-workflow__title\">Connect The Spare Source<\/h3>\r\n<p class=\"autool-workflow__description\">Connect the clamps to a suitable 10\u201314 V source with correct polarity and confirm the display.<\/p><\/article><article aria-labelledby=\"bt30-ecu-backup-power-cable-tab-3\" class=\"autool-workflow__panel\" data-workflow-panel=\"\" hidden=\"\" id=\"bt30-ecu-backup-power-cable-panel-3\" role=\"tabpanel\" tabindex=\"0\"><h3 class=\"autool-workflow__title\">Connect The OBD Lead<\/h3><p>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><p>Seat the OBD connector and confirm stable support before disconnecting the main battery.<\/p><\/article><article aria-labelledby=\"bt30-ecu-backup-power-cable-tab-4\" class=\"autool-workflow__panel\" data-workflow-panel=\"\" hidden=\"\" id=\"bt30-ecu-backup-power-cable-panel-4\" role=\"tabpanel\" tabindex=\"0\"><div class=\"autool-workflow__number\">05<\/div>\r\n<h3 class=\"autool-workflow__title\">Replace And Disconnect<\/h3>\r\n<p class=\"autool-workflow__description\">Complete the battery replacement without shorting loose terminals, reconnect the main battery securely, then remove BT30 in the specified order and verify vehicle functions.<\/p><\/article>\r\n<\/div>\r\n<div class=\"autool-workflow__actions\">\r\n<button class=\"autool-workflow__button\" data-workflow-prev=\"\" disabled=\"\" type=\"button\">\u2190 Previous<\/button><button class=\"autool-workflow__button autool-workflow__button--next\" data-workflow-next=\"\" type=\"button\">Next step \u2192<\/button>\r\n<\/div>\r\n<\/div>\r\n<aside class=\"autool-workflow__safety\" data-workflow-safety=\"\"><h3 class=\"autool-workflow__safety-title\">Before You Start<\/h3>\r\n<ul class=\"autool-workflow__safety-list\">\r\n<li>Some vehicles restrict backup power through the diagnostic connector; follow the model-specific service information.<\/li>\r\n<li>BT30 is not specified for voltage-stabilized ECU flashing or programming.<\/li>\r\n<\/ul><\/aside>\r\n<\/div>\r\n<\/div>\r\n<\/div><\/section><section class=\"autool-section autool-product-section--soft\" data-autool-surface=\"base\" id=\"autool-safety\"><div class=\"autool-layout-container\">\r\n<header class=\"autool-section-head\"><p class=\"autool-subhead\">Safety &amp; Compatibility<\/p>\r\n<h2 class=\"autool-title\">Confirm the Source, Fuse and Vehicle Procedure<\/h2><\/header><div class=\"autool-product-grid autool-product-grid--3 autool-product-rail\" data-autool-rail=\"safety\">\r\n<article class=\"autool-product-card\"><h3>Vehicle Procedure First<\/h3>\r\n<p>Some vehicles restrict backup power through the diagnostic connector; follow the model-specific service information.<\/p><\/article><article class=\"autool-product-card\"><h3>Not A Programming Supply<\/h3>\r\n<p>BT30 is not specified for voltage-stabilized ECU flashing or programming.<\/p><\/article><article class=\"autool-product-card\"><h3>No Jump Starting Or Charging<\/h3>\r\n<p>Do not use the lead to crank the engine or charge a battery.<\/p><\/article><article class=\"autool-product-card\"><h3>3 A Fused Path<\/h3>\r\n<p>Do not bypass the fuse or power loads beyond the backup-memory purpose. Replace a blown fuse only with the exact type and rating specified by the delivered manual and fuse holder; do not substitute 5 A based on generic advice.<\/p><\/article><article class=\"autool-product-card\"><h3>Prevent Terminal Shorts<\/h3>\r\n<p>Keep disconnected main-battery leads isolated while backup power is present.<\/p><\/article><article class=\"autool-product-card\"><h3>Monitor Backup Current<\/h3>\r\n<p>Use the current display to monitor the temporary backup connection during battery replacement.<\/p><\/article>\r\n<article class=\"autool-product-card\"><h3>Pre-Use Requirements<\/h3><p>Review the battery, sleep mode, key distance, current display, fuse replacement, and storage requirements before using BT30.<\/p><\/article><article class=\"autool-product-card\"><h3>Spare Battery Requirements<\/h3><p>Use a fully charged 12V spare battery.<\/p><p>Do not use a low-voltage battery; if the device alarms immediately, replace it with a battery above 12V.<\/p><\/article><article class=\"autool-product-card\"><h3>Battery Replacement Safety<\/h3><p>During battery replacement, keep the vehicle power switch OFF and do not turn on electrical appliances.<\/p><\/article><article class=\"autool-product-card\"><h3>Correct Fuse Replacement<\/h3><p>If the fuse blows, replace it with a 3A or 5A fuse only.<\/p><p>Replace a blown fuse with the exact type and rating specified for the supplied BT30 cable and fuse holder.<\/p><\/article><article class=\"autool-product-card\"><h3>Dry Storage Conditions<\/h3><p>Store the product in a dry place and avoid hot, humid, or non-ventilated storage.<\/p><\/article><\/div>\r\n<\/div><\/section><section class=\"autool-section autool-comparison\" data-autool-nav=\"Spec&amp;Comparison\" data-autool-surface=\"dark\" id=\"autool-specifications\"><div class=\"autool-layout-container\">\r\n<header class=\"autool-section-head\"><p class=\"autool-subhead\">Specifications<\/p>\r\n<h2 class=\"autool-title\">Voltage, Fuse and Current Fields<\/h2><\/header><div class=\"autool-product-grid autool-product-grid--3 autool-product-rail\" data-autool-rail=\"points-18\"><article class=\"autool-product-card\"><h3>Old Version<\/h3><p><strong>Old Version<\/strong> \u2014 ECU backup power \/ No display<\/p><\/article><article class=\"autool-product-card\"><h3>New Version<\/h3><p><strong>New Version<\/strong> \u2014 Voltage\/current display \/ Leakage check \/ Circuit protection<\/p><\/article><\/div><div class=\"autool-evidence-table-shell\" data-autool-table-slider=\"\"><div aria-label=\"Product specifications\" class=\"autool-evidence-table-scroll\" role=\"region\" tabindex=\"0\"><table class=\"autool-evidence-table\">\r\n<caption class=\"autool-table-caption--accessible\">Product Specifications<\/caption>\r\n<thead><tr>\r\n<th scope=\"col\">Specification<\/th>\r\n<th scope=\"col\">Value<\/th>\r\n<\/tr><\/thead>\r\n<tbody>\r\n<tr>\r\n<th scope=\"row\">Supply<\/th>\r\n<td>DC 10\u201314 V<\/td>\r\n<\/tr>\r\n<tr>\r\n<th scope=\"row\">Fuse<\/th>\r\n<td>3 A; confirm the rating marked on the supplied cable and fuse holder. For applications requiring the separate &lt;7 A working-current specification, confirm the correct version with AUTOOL.<\/td>\r\n<\/tr>\r\n<tr>\r\n<th scope=\"row\">Display<\/th>\r\n<td>Voltage and current<\/td>\r\n<\/tr>\r\n<tr>\r\n<th scope=\"row\">Purpose<\/th>\r\n<td>Temporary ECU\/memory support during approved battery replacement<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table><\/div><\/div>\r\n<\/div><\/section><section class=\"autool-section autool-product-section--cool autool-section--downloads\" data-autool-surface=\"cool\" id=\"autool-download\"><div class=\"autool-layout-container\">\r\n<header class=\"autool-section-head\"><p class=\"autool-subhead\">Manual &amp; Support<\/p>\r\n<h2 class=\"autool-title\">Confirm the Fuse, Source and Vehicle Procedure<\/h2><\/header><div aria-label=\"BT30 manual download and setup support\" class=\"autool-product-rail autool-resources-grid autool-mobile-rail\" data-autool-rail=\"resources\">\r\n<article class=\"autool-resource-download autool-resource-panel\"><div class=\"autool-resource-media\"><img decoding=\"async\" alt=\"AUTOOL BT30 User Manual preview\" src=\"https:\/\/autoolstore.com\/wp-content\/uploads\/autool-localized-resources\/2026-05-11\/images\/autool-bt30-user-manual-preview.jpg\"\/> <\/div><div class=\"autool-resource-body\"><span class=\"autool-resource-meta\">Manual \/ PDF<\/span><h3>AUTOOL BT30 User Manual<\/h3><p>Open the PDF manual for BT30 backup-source connection, OBD power delivery and voltage monitoring, with fuse protection, battery-service safety and troubleshooting support.<\/p><div class=\"autool-resource-actions\"><a class=\"autool-product-button\" href=\"https:\/\/autoolstore.com\/wp-content\/uploads\/autool-localized-resources\/2026-05-11\/pdf\/407e888b3f58c1ed55973f4687fd235760a708c0.pdf\" rel=\"noopener\" target=\"_blank\">Download Manual<\/a><\/div><\/div><\/article><aside class=\"autool-resource-panel autool-section--support\" id=\"autool-support\"><div class=\"autool-resource-body\"><span class=\"autool-resource-meta\">Setup Help<\/span><h3>Need Help Choosing the Right Setup?<\/h3><p>Contact AUTOOL Store before ordering for help with manual versions, installation steps, compatibility, accessories, safe-use instructions, or after-sales support.<\/p><dl class=\"autool-support-list\"><div><dt>Email<\/dt><dd><a href=\"mailto:support@autoolstore.com\">support@autoolstore.com<\/a><\/dd><\/div><div><dt>WhatsApp<\/dt><dd><a href=\"https:\/\/wa.me\/8618926477404\" target=\"_blank\" rel=\"noopener\">+86 189 2647 7404<\/a><\/dd><\/div><\/dl><div class=\"autool-resource-actions\"><a class=\"autool-product-button\" href=\"mailto:support@autoolstore.com\">EMAIL<\/a><a class=\"autool-product-button\" href=\"https:\/\/wa.me\/8618926477404\" rel=\"noopener\" target=\"_blank\">WHATSAPP<\/a><\/div><\/div><\/aside>\r\n<\/div>\r\n<\/div><\/section><section class=\"autool-section autool-product-section--warm autool-section--package\" data-autool-surface=\"warm\" id=\"autool-box\"><div class=\"autool-layout-container\">\r\n<div class=\"autool-package-layout\">\r\n<figure class=\"autool-package-media\"><img decoding=\"async\" alt=\"AUTOOL BT30 packing list and package contents\" src=\"https:\/\/autoolstore.com\/wp-content\/uploads\/2025\/10\/357a8f91-6cc8-4755-8fd7-13e4b484fe96.png\"\/> <\/figure>\r\n<div class=\"autool-package-copy\"><p class=\"autool-subhead\">Package Contents<\/p>\r\n<h2 class=\"autool-title\">Check the Cable, Fuse and Included Parts<\/h2><ul aria-label=\"BT30 package contents\" class=\"autool-package-list autool-product-rail\" data-autool-rail=\"package\">\r\n<li>\r\n<span>BT30 Cable<\/span><strong>Integrated OBD connector, display, battery clamps, and 3 A fuse.<\/strong>\r\n<\/li>\r\n<li>\r\n<span>User Manual And Box<\/span><strong>Documentation and retail package.<\/strong>\r\n<\/li>\r\n<li><span>Included Components<\/span><strong>The package image shows the BT30 product box, user manual, and main OBD emergency power cable.<\/strong><\/li><li><span>Main Unit<\/span><strong>AUTOOL BT30 OBD emergency power cable<\/strong><\/li><li><span>Cable \/ Clamp<\/span><strong>Integrated power clamp and OBD interface<\/strong><\/li><\/ul><\/div>\r\n<\/div>\r\n<\/div><\/section><section class=\"autool-section autool-product-section--white autool-section--faq\" data-autool-nav=\"FAQ\" data-autool-surface=\"white\" id=\"autool-faq-description\"><div class=\"autool-layout-container\">\r\n<header class=\"autool-section-head\"><p class=\"autool-subhead\">FAQs<\/p>\r\n<h2 class=\"autool-title\">Backup-Power and Battery-Replacement Questions<\/h2><\/header><div class=\"autool-faq-grid\">\r\n<details><summary>Why Does The Alarm Trigger And Blow The Fuse During Use?<\/summary><div class=\"autool-faq-answer\"><p>Before use, make sure the vehicle is in sleep mode and keep the car key at least 3 meters away from the vehicle. This helps prevent the high-current alarm from being triggered. The fuse on BT30 will only blow when high current passes through the device.<\/p><\/div><\/details><details><summary>Why Is There No Current Display?<\/summary><div class=\"autool-faq-answer\"><p>After connecting an external 12V battery, disconnect the negative terminal of the original vehicle battery. This allows the load current to be displayed. Treat the displayed current as a screening observation under the stated setup, not a complete parasitic-draw diagnosis.<\/p><\/div><\/details><details><summary>What Should I Do If The Fuse Blows?<\/summary><div class=\"autool-faq-answer\"><p>If the fuse opens, stop and check the connection. The replacement must match the type and rating marked on the supplied fuse holder; never exceed 5 A. If the marking is unclear, confirm the correct fuse with AUTOOL before replacement.<\/p><\/div><\/details><details><summary>Why Does The Device Beep As Soon As It Is Connected To The Vehicle Battery?<\/summary><div class=\"autool-faq-answer\"><p>The beeping alarm may occur because the battery voltage is too low. Replace the battery with one that has a voltage greater than 12V.<\/p><\/div><\/details><details><summary>Why Doesn&#8217;t The New Device Power On After Connecting To The Battery?<\/summary><div class=\"autool-faq-answer\"><p>Check whether the connected battery is a vehicle battery. If a jump starter or power bank charger is connected, the device will not power on. Replace it with a vehicle battery for proper power supply.<\/p><\/div><\/details><details><summary>Can BT30 Power ECU Programming?<\/summary><div class=\"autool-faq-answer\"><p>No. It is a temporary battery-replacement memory-support cable, not a regulated programming power supply.<\/p><\/div><\/details>\r\n<\/div>\r\n<\/div><\/section><\/main><\/div>\r\n\r\n<\/div>\r\n<!-- \/wp:post-content -->\r\n<\/div>","protected":false},"excerpt":{"rendered":"<ul>\n<li><strong>Temporary OBD Memory Support:<\/strong> Supply temporary backup power through the vehicle OBD interface during an approved 12 V battery replacement.<\/li>\n<li><strong>10\u201314 V Clamp Input:<\/strong> Connect a suitable 10\u201314 V source through the insulated battery clamps.<\/li>\n<li><strong>3 A Fused Protection:<\/strong> Protect the cable output with a built-in 3 A fuse, overcurrent, overvoltage, and reverse-polarity protection.<\/li>\n<li><strong>Voltage + Current Display:<\/strong> Observe voltage and current changes on the integrated digital display.<\/li>\n<li><strong>0.5 m + 0.4 m Leads:<\/strong> Reach the service connection with a 0.5 m clamp-side cable and 0.4 m OBD-side cable.<\/li>\n<\/ul>\n","protected":false},"featured_media":62543,"comment_status":"open","ping_status":"closed","template":"","meta":{"_gspb_post_css":""},"product_brand":[448],"product_cat":[1067,1063],"product_tag":[1037,947,939,1038],"hf_cat_product":[4539],"class_list":["post-45602","product","type-product","status-publish","has-post-thumbnail","product_brand-autool","product_cat-automotive-circuit-tester","product_cat-automotive-repair-testing-equipment","product_tag-best-seller","product_tag-electrical-diagnostics","product_tag-multi-warehouse-shipping","product_tag-new-arrival","first","instock","shipping-taxable","purchasable","product-type-variable"],"meta_box":{"autool_archive_segment":"Electrical diagnostics","autool_primary_use_case":"Vehicle electrical circuit testing and measurement","autool_customer_focus":["measurement accuracy","warehouse \/ delivery location"],"autool_source_summary":"- Electrical Faults Faster: Puts voltage, polarity, continuity, and signal-check tasks first so users can shorten troubleshooting time. - Decision Points Up Front: The short description is structured to surface practical","autool_model_family":"BT30","autool_voltage_options":"","autool_ship_from_options":"Germany\u3001United States\u3001United Kingdom\u3001China","autool_package_options":"","autool_accessory_options":"","autool_data_confidence":"site-content-derived","autool_manual_review_notes":""},"_links":{"self":[{"href":"https:\/\/autoolstore.com\/wp-json\/wp\/v2\/product\/45602","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/autoolstore.com\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/autoolstore.com\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/autoolstore.com\/wp-json\/wp\/v2\/comments?post=45602"}],"wp:attachment":[{"href":"https:\/\/autoolstore.com\/wp-json\/wp\/v2\/media?parent=45602"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/autoolstore.com\/wp-json\/wp\/v2\/product_brand?post=45602"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/autoolstore.com\/wp-json\/wp\/v2\/product_cat?post=45602"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/autoolstore.com\/wp-json\/wp\/v2\/product_tag?post=45602"},{"taxonomy":"hf_cat_product","embeddable":true,"href":"https:\/\/autoolstore.com\/wp-json\/wp\/v2\/hf_cat_product?post=45602"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}