{"id":827,"date":"2026-10-10T01:53:40","date_gmt":"2026-10-10T01:53:40","guid":{"rendered":"https:\/\/www.batteryone.co.nz\/blog\/?p=827"},"modified":"2026-10-10T01:53:41","modified_gmt":"2026-10-10T01:53:41","slug":"knb-84l-battery-wont-charge-diagnose-it-in-3-steps-before-you-buy","status":"publish","type":"post","link":"https:\/\/www.batteryone.co.nz\/blog\/archives\/827","title":{"rendered":"KNB-84L Battery Won&#8217;t Charge? Diagnose It in 3 Steps Before You Buy"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">If you rely on a <strong>Kenwood TX3710<\/strong> handheld (also sold as the <strong>TK-3710 ProTalk<\/strong> UHF CB radio), you already know the feeling: a battery that used to power a full shift suddenly dies mid-conversation. The <strong>KNB-84L<\/strong> is the high-capacity Li-ion pack that keeps this radio running \u2014 and like every battery, it wears out.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This guide explains why it happens, how to spot the warning signs, and how to choose the right<a href=\"https:\/\/www.batteryone.co.nz\/detail-kenwood-battery-knb-84l-model-ke7607apr_oth\"> <strong>1900mAh KNB-84L battery replacement<\/strong><\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Kenwood KNB-84L Battery \u2014 Key Specs at a Glance<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Attribute<\/td><td>Specification<\/td><\/tr><tr><td>Battery model \/ part number<\/td><td><strong>KNB-84L<\/strong><\/td><\/tr><tr><td>Capacity<\/td><td><strong>1900mAh<\/strong> (14.06Wh)<\/td><\/tr><tr><td>Voltage<\/td><td><strong>7.4V<\/strong><\/td><\/tr><tr><td>Battery type<\/td><td>Rechargeable Li-ion<\/td><\/tr><tr><td>Compatible radio<\/td><td>Kenwood KNB-84L, TX3710 \/ TK-3710<\/td><\/tr><tr><td>Typical runtime<\/td><td>Up to <strong>11 hours<\/strong> (5% TX \/ 5% RX \/ 90% standby)<\/td><\/tr><tr><td>Charge cycles<\/td><td>Rated for roughly 500\u20131000 cycles<\/td><\/tr><tr><td>Protection<\/td><td>Built-in BMS (over-charge, over-discharge, over-heat, short-circuit)<\/td><\/tr><tr><td>Certifications<\/td><td>CE, RoHS, UL, ISO9001<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Because the KNB-84L is a <strong>7.4V Li-ion<\/strong> pack, it is <strong>not<\/strong> interchangeable with older Ni-Cd or Ni-MH Kenwood batteries. Always confirm both the <strong>model number<\/strong> and the <strong>part number<\/strong> before buying \u2014 a matching radio model alone does not guarantee a matching battery.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Symptom 1: Battery Life Is Getting Shorter<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The most common complaint is <strong>reduced talk time<\/strong>. A new KNB-84L delivers up to 11 hours under typical duty cycles, but Li-ion capacity fades gradually. If your TX3710 now needs a recharge halfway through the day, the battery has reached the end of its useful lifespan.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Watch for these patterns:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Runtime shrinking:<\/strong> a pack that used to last a 10-hour shift now dies in 3\u20134 hours.<\/li>\n\n\n\n<li><strong>High self-discharge:<\/strong> the battery loses significant charge even when the radio is switched off.<\/li>\n\n\n\n<li><strong>Sudden shutdowns:<\/strong> the radio powers off unexpectedly even though the indicator shows a charge.<\/li>\n\n\n\n<li><strong>Unreliable gauge:<\/strong> the battery meter jumps or drops erratically.<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Rule of thumb:<\/strong> when runtime drops below about 70% of what it originally delivered, replacement is more economical than continuing to fight with it.<\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\">Symptom 2: The Battery Won&#8217;t Charge<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Battery not charging<\/strong> is the second big red flag \u2014 and it has two very different causes, so diagnose before you buy.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>What you see<\/td><td>Likely cause<\/td><td>What to do<\/td><\/tr><tr><td>Charger light never turns on<\/td><td>Poor contact, dirty terminals, or faulty charger<\/td><td>Clean battery and charger contacts; test with a known-good charger<\/td><\/tr><tr><td>Charges briefly, then stops<\/td><td>Deep-discharge &#8220;sleep mode&#8221; (BMS cut-off)<\/td><td>Use a charger that can wake a protected pack; if it still won&#8217;t charge, replace it<\/td><\/tr><tr><td>Longer and longer charge times<\/td><td>Capacity loss \/ rising internal resistance<\/td><td>Replace the battery<\/td><\/tr><tr><td>Radio shows full, drains instantly<\/td><td>End-of-life cells<\/td><td>Replace the battery<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Good news for genuine failures:<\/strong> a 1900mAh KNB-84L replacement is designed to drop straight into your original Kenwood charger and radio \u2014 no adapter, no reconfiguration.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How to Tell If Your KNB-84L Battery Is Actually Dead<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Run through this simple three-part check. You don&#8217;t need to be an electronics expert.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. Visual inspection<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Swelling or bulging<\/strong> \u2014 the most dangerous sign; internal gas buildup. Stop using it immediately.<\/li>\n\n\n\n<li><strong>Cracks, dents, or warping<\/strong> \u2014 physical damage can compromise internal separators.<\/li>\n\n\n\n<li><strong>Corrosion or leakage<\/strong> around terminals or seams \u2014 the electrolyte is escaping.<\/li>\n\n\n\n<li><strong>Discoloration or a burnt smell<\/strong> \u2014 evidence of overheating.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">2. Performance check<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Does it still hold a charge through a full working day?<\/li>\n\n\n\n<li>Does it charge fully, or stop short of 100%?<\/li>\n\n\n\n<li>Does the radio get unusually hot during charging or use?<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">3. Electrical test with a multimeter<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Set your multimeter to <strong>DC voltage<\/strong> and measure across the battery terminals. A reading that falls <strong>well below<\/strong> nominal \u2014 or collapses under even a light load \u2014 confirms the pack is worn out or deeply discharged. Replacement is then the only safe option.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u26a0\ufe0f <strong>Safety first:<\/strong> never attempt to &#8220;revive&#8221; a swollen, leaking, or shorted battery, and never puncture, crush, or incinerate a Li-ion pack. Recycle it through a certified battery program.<\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\">Where the Kenwood TX3710 \/ KNB-84L Is Used<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The <strong>TX3710 (TK-3710)<\/strong> is a rugged, licence-free UHF CB handheld built for demanding environments \u2014 it meets IP54, IP55 and IP67 dust\/water standards and a range of MIL-STD 810 tests. Typical scenarios include:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Scenario<\/td><td>Why battery quality matters<\/td><\/tr><tr><td><strong>Construction &amp; trades sites<\/strong><\/td><td>Long shifts, no chance to recharge mid-day; reliability is safety-critical.<\/td><\/tr><tr><td><strong>Security &amp; event staff<\/strong><\/td><td>Continuous standby plus bursts of transmit traffic drain the pack fast.<\/td><\/tr><tr><td><strong>Hospitality, retail &amp; warehouses<\/strong><\/td><td>All-day coordination across large sites; downtime costs money.<\/td><\/tr><tr><td><strong>Hiking, camping &amp; 4WD convoys<\/strong><\/td><td>No mains power for days; self-discharge and cold weather cut runtime.<\/td><\/tr><tr><td><strong>Marine &amp; outdoor work<\/strong><\/td><td>Water, dust and temperature swings put extra stress on the pack.<\/td><\/tr><tr><td><strong>Fleet &amp; shared radios<\/strong><\/td><td>Heavy cycle counts wear batteries out far faster than single-user radios.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">For any of these, a healthy <strong>1900mAh KNB-84L<\/strong> is the difference between a full day of clear communication and a dead radio when you need it most. Many buyers keep a spare fully-charged pack on hand \u2014 the cheapest insurance a field team can buy.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Why Choose a 1900mAh KNB-84L Replacement<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>True capacity:<\/strong> 1900mAh \/ 14.06Wh of Grade-A Li-ion cells for longer runtime.<\/li>\n\n\n\n<li><strong>Turnkey fit:<\/strong> works with your existing Kenwood radio and original charger.<\/li>\n\n\n\n<li><strong>Built-in protection:<\/strong> BMS guards against over-charging, over-discharging, overheating and short circuits.<\/li>\n\n\n\n<li><strong>Certified safe:<\/strong> CE, RoHS and UL compliant.<\/li>\n\n\n\n<li><strong>Peace of mind:<\/strong> typically backed by a 12-month warranty and 30-day returns.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">How to Make Your KNB-84L Battery Last Longer<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Use only the correct Kenwood charger for the KNB-84L \u2014 never a mismatched unit.<\/li>\n\n\n\n<li>Avoid deep discharges; top up before the pack is completely flat.<\/li>\n\n\n\n<li>Don&#8217;t leave batteries on the charger for days on end.<\/li>\n\n\n\n<li>Store spares in a cool, dry place \u2014 heat is the number-one killer of Li-ion capacity.<\/li>\n\n\n\n<li>Run a full charge\/discharge cycle 2\u20133 times to calibrate a brand-new battery&#8217;s indicator.<\/li>\n\n\n\n<li>Keep batteries away from metal objects that could short the terminals.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Is the KNB-84L compatible with my Kenwood TX3710?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Yes \u2014 the 1900mAh KNB-84L replacement is designed for the Kenwood KNB-84L and TX3710 \/ TK-3710. Always verify both the radio model and the battery part number before ordering.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">How long should a KNB-84L battery last?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Under a typical 5% transmit \/ 5% receive \/ 90% standby duty cycle, expect up to 11 hours per charge and roughly 500\u20131000 charge cycles over its lifetime. After that, runtime steadily declines.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Can I use a Ni-MH or Ni-Cd battery instead?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">No. The KNB-84L is a 7.4V Li-ion pack and is not interchangeable with older Ni-MH or Ni-Cd chemistries.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">My battery won&#8217;t charge \u2014 is it definitely dead?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Not always. First check the charger and clean the contacts. If a known-good charger still won&#8217;t charge the pack, or it charges but holds almost no runtime, it has reached end of life and should be replaced.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">How do I know when to replace rather than repair?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Replace when runtime falls below about 70% of original, when it won&#8217;t hold a charge, or when you see any swelling, leakage or corrosion. A swollen Li-ion battery must be retired immediately.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Give your Kenwood TX3710 the runtime it deserves.<\/strong> Stop working around a tired battery. A fresh 1900mAh KNB-84L replacement restores full-shift performance and drops straight into your existing radio and charger. Check your model and part number, then upgrade today.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>If you rely on a Kenwood TX3710 handheld (also sold as the TK-3710 ProTalk UHF CB radio), you already know the feeling: a battery that<\/p>\n","protected":false},"author":1,"featured_media":828,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[107],"tags":[316,317,315],"class_list":["post-827","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-radio-communication-battery","tag-7-4v-li-ion-radio-battery","tag-kenwood-two-way-radio-battery","tag-knb-84l-battery-replacement"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>KNB-84L Battery Won&#039;t Charge? Diagnose It in 3 Steps Before You Buy - BATTERY ONE<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.batteryone.co.nz\/blog\/archives\/827\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"KNB-84L Battery Won&#039;t Charge? Diagnose It in 3 Steps Before You Buy - BATTERY ONE\" \/>\n<meta property=\"og:description\" content=\"If you rely on a Kenwood TX3710 handheld (also sold as the TK-3710 ProTalk UHF CB radio), you already know the feeling: a battery that\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.batteryone.co.nz\/blog\/archives\/827\" \/>\n<meta property=\"og:site_name\" content=\"BATTERY ONE\" \/>\n<meta property=\"article:published_time\" content=\"2026-10-10T01:53:40+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-10-10T01:53:41+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.batteryone.co.nz\/blog\/wp-content\/uploads\/2026\/10\/\u622a\u56fe20261010094046.png\" \/>\n\t<meta property=\"og:image:width\" content=\"371\" \/>\n\t<meta property=\"og:image:height\" content=\"376\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"6 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.batteryone.co.nz\/blog\/archives\/827\",\"url\":\"https:\/\/www.batteryone.co.nz\/blog\/archives\/827\",\"name\":\"KNB-84L Battery Won't Charge? Diagnose It in 3 Steps Before You Buy - BATTERY ONE\",\"isPartOf\":{\"@id\":\"https:\/\/www.batteryone.co.nz\/blog\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.batteryone.co.nz\/blog\/archives\/827#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.batteryone.co.nz\/blog\/archives\/827#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.batteryone.co.nz\/blog\/wp-content\/uploads\/2026\/10\/\u622a\u56fe20261010094046.png\",\"datePublished\":\"2026-10-10T01:53:40+00:00\",\"dateModified\":\"2026-10-10T01:53:41+00:00\",\"author\":{\"@id\":\"https:\/\/www.batteryone.co.nz\/blog\/#\/schema\/person\/ddba63e7ff7a0387e1f4f0fe06662a74\"},\"breadcrumb\":{\"@id\":\"https:\/\/www.batteryone.co.nz\/blog\/archives\/827#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.batteryone.co.nz\/blog\/archives\/827\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.batteryone.co.nz\/blog\/archives\/827#primaryimage\",\"url\":\"https:\/\/www.batteryone.co.nz\/blog\/wp-content\/uploads\/2026\/10\/\u622a\u56fe20261010094046.png\",\"contentUrl\":\"https:\/\/www.batteryone.co.nz\/blog\/wp-content\/uploads\/2026\/10\/\u622a\u56fe20261010094046.png\",\"width\":371,\"height\":376},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.batteryone.co.nz\/blog\/archives\/827#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.batteryone.co.nz\/blog\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"KNB-84L Battery Won&#8217;t Charge? Diagnose It in 3 Steps Before You Buy\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.batteryone.co.nz\/blog\/#website\",\"url\":\"https:\/\/www.batteryone.co.nz\/blog\/\",\"name\":\"BATTERY ONE\",\"description\":\"Battery One Blog:Visit our blog and stay up-to-date on all that&#039;s happening in the battery industry. You&#039;ll get care tips and advice using.\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.batteryone.co.nz\/blog\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.batteryone.co.nz\/blog\/#\/schema\/person\/ddba63e7ff7a0387e1f4f0fe06662a74\",\"name\":\"admin\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.batteryone.co.nz\/blog\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/962a8afcedc5e8a7fdfe72ffc3c495e0a3b6e496e024ff865ef7a5e123fef81c?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/962a8afcedc5e8a7fdfe72ffc3c495e0a3b6e496e024ff865ef7a5e123fef81c?s=96&d=mm&r=g\",\"caption\":\"admin\"},\"sameAs\":[\"https:\/\/batteryone.co.nz\/blog\"],\"url\":\"https:\/\/www.batteryone.co.nz\/blog\/archives\/author\/admin_340f9jxa\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"KNB-84L Battery Won't Charge? Diagnose It in 3 Steps Before You Buy - BATTERY ONE","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.batteryone.co.nz\/blog\/archives\/827","og_locale":"en_US","og_type":"article","og_title":"KNB-84L Battery Won't Charge? Diagnose It in 3 Steps Before You Buy - BATTERY ONE","og_description":"If you rely on a Kenwood TX3710 handheld (also sold as the TK-3710 ProTalk UHF CB radio), you already know the feeling: a battery that","og_url":"https:\/\/www.batteryone.co.nz\/blog\/archives\/827","og_site_name":"BATTERY ONE","article_published_time":"2026-10-10T01:53:40+00:00","article_modified_time":"2026-10-10T01:53:41+00:00","og_image":[{"width":371,"height":376,"url":"https:\/\/www.batteryone.co.nz\/blog\/wp-content\/uploads\/2026\/10\/\u622a\u56fe20261010094046.png","type":"image\/png"}],"author":"admin","twitter_card":"summary_large_image","twitter_misc":{"Written by":"admin","Est. reading time":"6 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.batteryone.co.nz\/blog\/archives\/827","url":"https:\/\/www.batteryone.co.nz\/blog\/archives\/827","name":"KNB-84L Battery Won't Charge? Diagnose It in 3 Steps Before You Buy - BATTERY ONE","isPartOf":{"@id":"https:\/\/www.batteryone.co.nz\/blog\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.batteryone.co.nz\/blog\/archives\/827#primaryimage"},"image":{"@id":"https:\/\/www.batteryone.co.nz\/blog\/archives\/827#primaryimage"},"thumbnailUrl":"https:\/\/www.batteryone.co.nz\/blog\/wp-content\/uploads\/2026\/10\/\u622a\u56fe20261010094046.png","datePublished":"2026-10-10T01:53:40+00:00","dateModified":"2026-10-10T01:53:41+00:00","author":{"@id":"https:\/\/www.batteryone.co.nz\/blog\/#\/schema\/person\/ddba63e7ff7a0387e1f4f0fe06662a74"},"breadcrumb":{"@id":"https:\/\/www.batteryone.co.nz\/blog\/archives\/827#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.batteryone.co.nz\/blog\/archives\/827"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.batteryone.co.nz\/blog\/archives\/827#primaryimage","url":"https:\/\/www.batteryone.co.nz\/blog\/wp-content\/uploads\/2026\/10\/\u622a\u56fe20261010094046.png","contentUrl":"https:\/\/www.batteryone.co.nz\/blog\/wp-content\/uploads\/2026\/10\/\u622a\u56fe20261010094046.png","width":371,"height":376},{"@type":"BreadcrumbList","@id":"https:\/\/www.batteryone.co.nz\/blog\/archives\/827#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.batteryone.co.nz\/blog"},{"@type":"ListItem","position":2,"name":"KNB-84L Battery Won&#8217;t Charge? Diagnose It in 3 Steps Before You Buy"}]},{"@type":"WebSite","@id":"https:\/\/www.batteryone.co.nz\/blog\/#website","url":"https:\/\/www.batteryone.co.nz\/blog\/","name":"BATTERY ONE","description":"Battery One Blog:Visit our blog and stay up-to-date on all that&#039;s happening in the battery industry. You&#039;ll get care tips and advice using.","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.batteryone.co.nz\/blog\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/www.batteryone.co.nz\/blog\/#\/schema\/person\/ddba63e7ff7a0387e1f4f0fe06662a74","name":"admin","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.batteryone.co.nz\/blog\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/962a8afcedc5e8a7fdfe72ffc3c495e0a3b6e496e024ff865ef7a5e123fef81c?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/962a8afcedc5e8a7fdfe72ffc3c495e0a3b6e496e024ff865ef7a5e123fef81c?s=96&d=mm&r=g","caption":"admin"},"sameAs":["https:\/\/batteryone.co.nz\/blog"],"url":"https:\/\/www.batteryone.co.nz\/blog\/archives\/author\/admin_340f9jxa"}]}},"_links":{"self":[{"href":"https:\/\/www.batteryone.co.nz\/blog\/wp-json\/wp\/v2\/posts\/827","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.batteryone.co.nz\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.batteryone.co.nz\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.batteryone.co.nz\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.batteryone.co.nz\/blog\/wp-json\/wp\/v2\/comments?post=827"}],"version-history":[{"count":2,"href":"https:\/\/www.batteryone.co.nz\/blog\/wp-json\/wp\/v2\/posts\/827\/revisions"}],"predecessor-version":[{"id":830,"href":"https:\/\/www.batteryone.co.nz\/blog\/wp-json\/wp\/v2\/posts\/827\/revisions\/830"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.batteryone.co.nz\/blog\/wp-json\/wp\/v2\/media\/828"}],"wp:attachment":[{"href":"https:\/\/www.batteryone.co.nz\/blog\/wp-json\/wp\/v2\/media?parent=827"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.batteryone.co.nz\/blog\/wp-json\/wp\/v2\/categories?post=827"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.batteryone.co.nz\/blog\/wp-json\/wp\/v2\/tags?post=827"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}