{"id":10984,"date":"2026-09-30T10:38:14","date_gmt":"2026-09-30T10:38:14","guid":{"rendered":"https:\/\/shop.autoboss.com\/?post_type=product&#038;p=10984"},"modified":"2026-10-09T03:52:47","modified_gmt":"2026-10-09T03:52:47","slug":"autool-bt270-automotive-leakage-current-clamp-meter-0ma-60a-ac-dc","status":"publish","type":"product","link":"https:\/\/autoboss.com\/de\/product\/autool-bt270-automotive-leakage-current-clamp-meter-0ma-60a-ac-dc\/","title":{"rendered":"AUTOOL BT270 Automotive Leakage Current Clamp Meter \u2013 0mA-60A AC\/DC"},"content":{"rendered":"<div class=\"abd-pd\" data-abd-version=\"1\">\n<header class=\"abd-hero\">\n<h3>Track Down Battery Drain Without Opening the Circuit<\/h3>\n<p class=\"abd-lead\">Clamp the BT270 around a conductor to read vehicle current draw, from milliamp parasitic loads to starter and charging current, with automatic AC\/DC recognition and 99 stored readings. Runs on a 9 V battery, which is not included.<\/p>\n<ul class=\"abd-facts\">\n<li>0 mA\u201360 A AC\/DC<\/li>\n<li>1 mA Resolution<\/li>\n<li>Auto AC\/DC<\/li>\n<li>99 Stored Readings<\/li>\n<li>One-Button DC Zero<\/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>Non-Contact Clamp Measurement<\/h5>\n<p>Reads AC or DC current through the clamp without disconnecting the circuit.<\/p>\n<\/li>\n<li>\n<h5>Automatic AC\/DC Recognition<\/h5>\n<p>Switches modes on its own for common checks; below 25 mA AC, long-press Power to switch manually.<\/p>\n<\/li>\n<li>\n<h5>Leakage Diagnosis<\/h5>\n<p>DC and AC leakage current, ground-wire leakage and main-line current, plus motor starting and alternator charging current.<\/p>\n<\/li>\n<li>\n<h5>One-Button Zero<\/h5>\n<p>The Zero\/Backlight button zeroes the reading before a DC test; no adjustment knob is needed.<\/p>\n<\/li>\n<li>\n<h5>Hold, Memory and Review<\/h5>\n<p>The Hold\/Mem\/Mr button holds and stores numbered readings; long-press it to review them.<\/p>\n<\/li>\n<li>\n<h5>Backlit Display<\/h5>\n<p>A 4-digit backlit LCD stays readable in dark work areas.<\/p>\n<\/li>\n<\/ol>\n<\/section>\n<section class=\"abd-sec\" id=\"abd-specs\">\n<h4>More Specifications<\/h4>\n<div class=\"abd-table-wrap\">\n<table class=\"abd-table abd-specs\">\n<tbody>\n<tr>\n<th scope=\"row\">Over-range indication<\/th>\n<td>LCD shows OL<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Auto power-off warning<\/th>\n<td>LCD flashes for 30 seconds before shutdown; press Power to keep the test status<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Start-up mode<\/th>\n<td>DC current<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\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><b class=\"abd-qty\">1\u00d7<\/b>BT270 leakage current clamp<\/li>\n<li><b class=\"abd-qty\">1\u00d7<\/b>Storage pouch<\/li>\n<li><b class=\"abd-qty\">1\u00d7<\/b>User manual<\/li>\n<\/ul>\n<figure class=\"abd-fig\"><img decoding=\"async\" src=\"https:\/\/autoboss.com\/wp-content\/uploads\/autool-catalog\/media\/5eb3cfb37dabbf9374710d35.webp\" alt=\"AUTOOL BT270 leakage current clamp with storage pouch, retail box and user manual\" width=\"1200\" height=\"1200\" loading=\"lazy\"><figcaption>BT270 package contents; the 9 V battery is not included.<\/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>Power on<\/b><span>Install a 9 V battery if needed and press Power.<\/span><\/li>\n<li><b>Zero first<\/b><span>Press Zero\/Backlight before clamping the wire for a DC test.<\/span><\/li>\n<li><b>Clamp the right wire<\/b><span>Positive and negative together for DC leakage, live and neutral together for AC leakage, or the ground or main wire alone.<\/span><\/li>\n<li><b>Read and store<\/b><span>Read the LCD and press Hold\/Mem\/Mr to hold and store the value.<\/span><\/li>\n<li><b>Find the drain<\/b><span>With the vehicle asleep, pull fuses one at a time; a clear drop points to the circuit to check.<\/span><\/li>\n<\/ol>\n<p class=\"abd-note\">Measurement and safety details: <a href=\"https:\/\/autoboss.com\/wp-content\/uploads\/autool-catalog\/media\/23f06d5c27a3ff958a3d5837.pdf\" target=\"_blank\" rel=\"noopener\">BT270 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>The 9 V battery is not included.<\/li>\n<li>Do not exceed the measurement range, and take extra care on lines above 60 V DC or 30 V AC.<\/li>\n<li>The BT270 measures current only; it is not a power-probe tester for polarity, continuity or component activation.<\/li>\n<li>A low battery affects accuracy; replace it when the battery symbol appears.<\/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>Keep the jaw contact surfaces clean and protect the jaw joint from impact.<\/li>\n<li>Avoid long storage in heat, humidity, condensation or direct sun, and remove the battery for long storage.<\/li>\n<li>Leave disassembly and calibration to qualified service personnel.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/section>\n<section class=\"abd-sec\" id=\"abd-faq\">\n<h4>FAQ<\/h4>\n<details class=\"abd-faq\" name=\"abd-faq\">\n<summary>What quiescent current is normal?<\/summary>\n<p>Typically about 30\u201340 mA; some European vehicles are about 80\u201390 mA depending on class and equipment. Use the vehicle&#8217;s specified limit.<\/p>\n<\/details>\n<details class=\"abd-faq\" name=\"abd-faq\">\n<summary>When does a reading suggest a drain?<\/summary>\n<p>100 mA or more after the vehicle reaches its specified sleep state may indicate electrical leakage.<\/p>\n<\/details>\n<details class=\"abd-faq\" name=\"abd-faq\">\n<summary>Is CAT III 600V the measuring range?<\/summary>\n<p>No. CAT III 600V is a line safety rating; the current measurement range remains 0 mA\u201360 A.<\/p>\n<\/details>\n<\/section>\n<\/div>","protected":false},"excerpt":{"rendered":"<ul>\n<li><strong>0\u201360 A AC\/DC Clamp:<\/strong> Measure AC or DC current with a non-contact clamp across the 0\u201360 A range.<\/li>\n<li><strong>1 mA Display Resolution:<\/strong> View current changes at 1 mA display resolution.<\/li>\n<li><strong>Automatic AC\/DC Recognition:<\/strong> Let the meter recognize AC or DC signals automatically for common current checks.<\/li>\n<li><strong>One-Button DC Zero:<\/strong> Zero the clamp before DC measurements with the dedicated Zero\/Backlight control.<\/li>\n<li><strong>99-Set Data Memory:<\/strong> Hold readings and store up to 99 numbered data sets for later review.<\/li>\n<\/ul>","protected":false},"featured_media":12364,"comment_status":"open","ping_status":"closed","template":"","meta":{"_gspb_post_css":""},"product_brand":[128],"product_cat":[249],"product_tag":[],"class_list":["post-10984","product","type-product","status-publish","has-post-thumbnail","product_brand-autool","product_cat-multimeters-oscilloscopes","first","instock","shipping-taxable","purchasable","product-type-variable"],"_links":{"self":[{"href":"https:\/\/autoboss.com\/de\/wp-json\/wp\/v2\/product\/10984","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/autoboss.com\/de\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/autoboss.com\/de\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/autoboss.com\/de\/wp-json\/wp\/v2\/comments?post=10984"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/autoboss.com\/de\/wp-json\/wp\/v2\/media\/12364"}],"wp:attachment":[{"href":"https:\/\/autoboss.com\/de\/wp-json\/wp\/v2\/media?parent=10984"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/autoboss.com\/de\/wp-json\/wp\/v2\/product_brand?post=10984"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/autoboss.com\/de\/wp-json\/wp\/v2\/product_cat?post=10984"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/autoboss.com\/de\/wp-json\/wp\/v2\/product_tag?post=10984"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}