{"id":10853,"date":"2026-09-30T10:38:09","date_gmt":"2026-09-30T10:38:09","guid":{"rendered":"https:\/\/shop.autoboss.com\/?post_type=product&#038;p=10853"},"modified":"2026-10-09T03:28:49","modified_gmt":"2026-10-09T03:28:49","slug":"autool-bt30-ecu-backup-power-cable","status":"publish","type":"product","link":"https:\/\/autoboss.com\/es\/product\/autool-bt30-ecu-backup-power-cable\/","title":{"rendered":"AUTOOL BT30 OBD2 ECU Backup Power Cable with Voltage &#038; Current Display"},"content":{"rendered":"<div class=\"abd-pd\" data-abd-version=\"1\">\n<header class=\"abd-hero\">\n<h3>Keep Vehicle Memory Powered While You Swap the Battery<\/h3>\n<p class=\"abd-lead\">The AUTOOL BT30 feeds temporary backup power from a fully charged 12 V spare battery into the vehicle&#8217;s OBD port during battery replacement, with a live voltage and current display and a fused path. It is not a charger, jump starter or programming supply.<\/p>\n<ul class=\"abd-facts\">\n<li>10\u201314 V Backup Source<\/li>\n<li>Live Voltage \/ Current<\/li>\n<li>3 A Fused Path<\/li>\n<li>0.5 m + 0.4 m Leads<\/li>\n<\/ul>\n<\/header>\n<section class=\"abd-sec\" id=\"abd-features\">\n<h4>Key Features<\/h4>\n<ol class=\"abd-features\">\n<li>\n<h5>Backup Power Through the OBD Port<\/h5>\n<p>Helps keep the ECU and vehicle electronics powered while the main battery is out.<\/p>\n<\/li>\n<li>\n<h5>Voltage and Current Display<\/h5>\n<p>Clamp to the spare battery and the screen shows voltage; once the OBD connection is made it can also show current.<\/p>\n<\/li>\n<li>\n<h5>Quiescent and Leakage Current Check<\/h5>\n<p>With the spare battery connected and the original battery&#8217;s negative terminal disconnected, the display helps observe static and possible leakage current.<\/p>\n<\/li>\n<li>\n<h5>Fuse and Circuit Protection<\/h5>\n<p>A 3 A fuse protects the cable and output circuit, backed by overcurrent, overvoltage and reverse-polarity protection.<\/p>\n<\/li>\n<li>\n<h5>Insulated Clamps<\/h5>\n<p>Fully enclosed clamps with pure copper teeth and thickened springs for a secure grip and safer handling.<\/p>\n<\/li>\n<\/ol>\n<\/section>\n<section class=\"abd-sec\" id=\"abd-box\">\n<h4>What&#8217;s in the Box<\/h4>\n<ul class=\"abd-box\">\n<li>BT30 cable with integrated OBD connector, display, battery clamps and 3 A fuse<\/li>\n<li>User manual<\/li>\n<li>Retail box<\/li>\n<\/ul>\n<figure class=\"abd-fig\"><img decoding=\"async\" src=\"https:\/\/autoboss.com\/wp-content\/uploads\/autool-catalog\/media\/a5a82556642a6bc20c983b11.webp\" alt=\"AUTOOL BT30 OBD backup power cable with clamps and display, user manual and retail box\" width=\"1200\" height=\"1200\" loading=\"lazy\"><figcaption>BT30 package contents.<\/figcaption><\/figure>\n<\/section>\n<section class=\"abd-sec\" id=\"abd-use\">\n<h4>How to Use<\/h4>\n<ol class=\"abd-steps\">\n<li><b>Confirm the procedure<\/b><span>Check that the vehicle permits OBD backup power and which settings battery replacement affects.<\/span><\/li>\n<li><b>Prepare the vehicle<\/b><span>Switch off loads, secure the vehicle and inspect the BT30 fuse and cable.<\/span><\/li>\n<li><b>Connect the spare source<\/b><span>Clamp red to positive and black to negative on a suitable 10\u201314 V battery and confirm the display.<\/span><\/li>\n<li><b>Connect the OBD lead<\/b><span>Seat the connector in the vehicle&#8217;s OBD port and confirm stable support before disconnecting the main battery.<\/span><\/li>\n<li><b>Replace and disconnect<\/b><span>Replace the battery without shorting loose terminals, reconnect it securely, then remove BT30 and check vehicle functions.<\/span><\/li>\n<\/ol>\n<p class=\"abd-note\">Connection, monitoring and troubleshooting: <a href=\"https:\/\/autoboss.com\/wp-content\/uploads\/autool-catalog\/media\/36c14e71739af6ae5aaa5f5f.pdf\" target=\"_blank\" rel=\"noopener\">BT30 user manual (PDF)<\/a><\/p>\n<\/section>\n<section class=\"abd-sec\" id=\"abd-notes\">\n<h4>Good to Know<\/h4>\n<div class=\"abd-notes\">\n<div class=\"abd-note-group is-caution\">\n<h5><span class=\"abd-tag\">Caution<\/span><\/h5>\n<ul>\n<li>Do not use it to crank the engine, charge a battery or power ECU flashing or programming.<\/li>\n<li>Some vehicles restrict backup power through the diagnostic connector; follow the model-specific service information.<\/li>\n<li>Keep the disconnected main-battery leads isolated while backup power is present.<\/li>\n<li>Do not bypass the fuse. Replace a blown fuse only with the type and rating marked on the supplied fuse holder.<\/li>\n<\/ul>\n<\/div>\n<div class=\"abd-note-group is-care\">\n<h5><span class=\"abd-tag\">Care<\/span><\/h5>\n<ul>\n<li>Put the vehicle into sleep mode and keep the key at least 3 meters away to avoid a high-current alarm.<\/li>\n<li>If it beeps as soon as it is connected, the spare battery voltage is too low; use one above 12 V.<\/li>\n<li>It will not power on from a jump starter or power bank; use a vehicle battery.<\/li>\n<li>Keep the vehicle power switch off and electrical loads off during the swap, and store the cable dry.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/section>\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>","protected":false},"featured_media":12353,"comment_status":"open","ping_status":"closed","template":"","meta":{"_gspb_post_css":""},"product_brand":[128],"product_cat":[64],"product_tag":[],"class_list":["post-10853","product","type-product","status-publish","has-post-thumbnail","product_brand-autool","product_cat-car-battery-charger","first","instock","shipping-taxable","purchasable","product-type-variable"],"_links":{"self":[{"href":"https:\/\/autoboss.com\/es\/wp-json\/wp\/v2\/product\/10853","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/autoboss.com\/es\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/autoboss.com\/es\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/autoboss.com\/es\/wp-json\/wp\/v2\/comments?post=10853"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/autoboss.com\/es\/wp-json\/wp\/v2\/media\/12353"}],"wp:attachment":[{"href":"https:\/\/autoboss.com\/es\/wp-json\/wp\/v2\/media?parent=10853"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/autoboss.com\/es\/wp-json\/wp\/v2\/product_brand?post=10853"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/autoboss.com\/es\/wp-json\/wp\/v2\/product_cat?post=10853"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/autoboss.com\/es\/wp-json\/wp\/v2\/product_tag?post=10853"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}