{"id":310,"date":"2026-10-21T05:30:32","date_gmt":"2026-10-21T05:30:32","guid":{"rendered":"https:\/\/chengguangenergy.com\/"},"modified":"2026-10-21T05:30:32","modified_gmt":"2026-10-21T05:30:32","slug":"jis-55b24","status":"publish","type":"post","link":"https:\/\/chengguangenergy.com\/ar\/jis-55b24\/","title":{"rendered":"55B24 Battery (N45\/N40): Specs, Fitment, and Cross-Reference"},"content":{"rendered":"<blockquote>\n<p>Part of the <strong><a href=\"\/jis-battery-standard\/\">JIS Battery Standard<\/a><\/strong> guide.<\/p>\n<\/blockquote>\n<p>The 55B24 is the smallest JIS battery in the Chengguang range \u2014 a narrow-frame (129 mm wide) design for compact sedans, hatchbacks, and kei cars where tray space is limited. It delivers 45 Ah and 370 CCA, adequate for 1.3\u20131.6 L gasoline engines in temperate-to-warm climates.<\/p>\n<h2>Key Takeaways<\/h2>\n<ul>\n<li><strong>Specs<\/strong> \u2014 45 Ah (C20), 370 CCA (SAE) in the narrowest JIS case (238 \u00d7 129 mm) \u2014 for compact cars and 1.3\u20131.6 L engines.<\/li>\n<li><strong>Aliases<\/strong> \u2014 N45 and N40 are regional names for the same 55B24 case; the 45 Ah rating covers both designations.<\/li>\n<li><strong>Fitment<\/strong> \u2014 Toyota Vios\/Yaris, Honda City\/Jazz, Suzuki Swift; verify the ~130 mm tray width first.<\/li>\n<li><strong>Mounting<\/strong> \u2014 B00 top-frame hold-down, T1 small posts \u2014 do not substitute a DIN (B13) or BCI battery without an adapter.<\/li>\n<li><strong>Build<\/strong> \u2014 Calcium-calcium (Ca-Ca) maintenance-free grid, produced on a small-frame automated line at 3,000\u20134,000 units\/day.<\/li>\n<\/ul>\n<h2>Quick Reference<\/h2>\n<table>\n<thead>\n<tr>\n<th>Parameter<\/th>\n<th>Specification<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Model<\/td>\n<td>55B24<\/td>\n<\/tr>\n<tr>\n<td>Also Known As<\/td>\n<td>N45, N40<\/td>\n<\/tr>\n<tr>\n<td>Standard<\/td>\n<td>JIS<\/td>\n<\/tr>\n<tr>\n<td>Battery Type<\/td>\n<td>SLI<\/td>\n<\/tr>\n<tr>\n<td>Nominal Voltage<\/td>\n<td>12 V<\/td>\n<\/tr>\n<tr>\n<td>Capacity (C20)<\/td>\n<td>45 Ah<\/td>\n<\/tr>\n<tr>\n<td>CCA Rating<\/td>\n<td>370 A (SAE)<\/td>\n<\/tr>\n<tr>\n<td>Dimensions (L\u00d7W\u00d7H)<\/td>\n<td>238 \u00d7 129 \u00d7 202\u2013227 mm<\/td>\n<\/tr>\n<tr>\n<td>Terminal Type<\/td>\n<td>T1 small post<\/td>\n<\/tr>\n<tr>\n<td>Polarity<\/td>\n<td>Left (\u2212), Right (+) \u2014 JIS type [0]<\/td>\n<\/tr>\n<tr>\n<td>Hold-Down<\/td>\n<td>B00 (top frame)<\/td>\n<\/tr>\n<tr>\n<td>Approximate Weight<\/td>\n<td>11\u201314 kg<\/td>\n<\/tr>\n<tr>\n<td>Chengguang SKU<\/td>\n<td>CG-JIS-55B24<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<blockquote>\n<p><strong>Specification ranges:<\/strong> values are typical production ranges. Exact CCA and Ah vary by batch \u2014 request the technical data sheet for your order.<\/p>\n<\/blockquote>\n<h2>Case &amp; Terminal Identification<\/h2>\n<p>The 55B24 is defined by its <strong>129 mm width<\/strong>, the narrowest case in the Chengguang JIS range. It uses T1 small-post terminals and a B00 top-frame hold-down. The label reads <strong>55B24<\/strong>, <strong>N45<\/strong>, or <strong>N40<\/strong> depending on the target market.<\/p>\n<table>\n<thead>\n<tr>\n<th>Identifier<\/th>\n<th>Value<\/th>\n<th>Check<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Case width<\/td>\n<td>129 mm<\/td>\n<td>Narrow frame (B-series)<\/td>\n<\/tr>\n<tr>\n<td>Case length<\/td>\n<td>238 mm<\/td>\n<td>Shortest JIS case<\/td>\n<\/tr>\n<tr>\n<td>Terminal<\/td>\n<td>T1 small post<\/td>\n<td>Small-diameter post<\/td>\n<\/tr>\n<tr>\n<td>Hold-down<\/td>\n<td>B00<\/td>\n<td>Top frame clamp<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Measure the tray width before ordering: a ~130 mm tray points to the 55B24; a ~175 mm tray opens the D-series.<\/p>\n<h2>Vehicle Applications<\/h2>\n<p>Small passenger cars, compact sedans, and kei cars with 1.3\u20131.6 L gasoline engines.<\/p>\n<table>\n<thead>\n<tr>\n<th>Brand<\/th>\n<th>Compatible Models<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Toyota<\/td>\n<td>Vios, Yaris, Agya, Avanza (some)<\/td>\n<\/tr>\n<tr>\n<td>Honda<\/td>\n<td>City, Jazz, Brio, Mobilio<\/td>\n<\/tr>\n<tr>\n<td>Suzuki<\/td>\n<td>Swift, Dzire, Alto<\/td>\n<\/tr>\n<tr>\n<td>Nissan<\/td>\n<td>March, Almera, Note<\/td>\n<\/tr>\n<tr>\n<td>Daihatsu<\/td>\n<td>Terios, Sirion, Xenia<\/td>\n<\/tr>\n<tr>\n<td>Mitsubishi<\/td>\n<td>Mirage, Attrage<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Fitment is a market-based guide \u2014 verify tray dimensions (238 \u00d7 129 mm), terminal position, and hold-down type before ordering.<\/p>\n<h2>Regional Markets<\/h2>\n<table>\n<thead>\n<tr>\n<th>Region<\/th>\n<th>Demand<\/th>\n<th>Segment<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Southeast Asia<\/td>\n<td>Highest volume<\/td>\n<td>Compact car core market<\/td>\n<\/tr>\n<tr>\n<td>Africa<\/td>\n<td>East\/West<\/td>\n<td>Compact car segment<\/td>\n<\/tr>\n<tr>\n<td>Middle East<\/td>\n<td>Moderate<\/td>\n<td>Small car segment<\/td>\n<\/tr>\n<tr>\n<td>Oceania<\/td>\n<td>Light<\/td>\n<td>Light vehicles<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Manufacturing &amp; Grid Alloy<\/h2>\n<p>The 55B24 is built on Chengguang&#8217;s small-frame automated line in <strong>Jinzhou, Hebei, China<\/strong> (IATF 16949:2016 certified):<\/p>\n<ul>\n<li><strong>Grid alloy<\/strong> \u2014 calcium-calcium (Ca-Ca) for maintenance-free operation with low water loss.<\/li>\n<li><strong>Plate design<\/strong> \u2014 reinforced thin plates engineered for reliable starting within the compact 238 \u00d7 129 mm envelope.<\/li>\n<li><strong>Throughput<\/strong> \u2014 3,000\u20134,000 units\/day across all brand labels, with full batch traceability from grid casting to container loading.<\/li>\n<\/ul>\n<p>The same narrow-frame tooling is shared across N45\/N40\/55B24 labels \u2014 only the terminal decal and carton change per market.<\/p>\n<h2>Testing &amp; Quality Control<\/h2>\n<p>Every 55B24 passes a two-tier QC gate before release:<\/p>\n<table>\n<thead>\n<tr>\n<th>Test<\/th>\n<th>Standard<\/th>\n<th>Pass Criteria<\/th>\n<th>Coverage<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>CCA Cold Cranking<\/td>\n<td>SAE J537 at \u221218 \u00b0C<\/td>\n<td>&gt;370 A<\/td>\n<td>100%<\/td>\n<\/tr>\n<tr>\n<td>Open Circuit Voltage<\/td>\n<td>\u2014<\/td>\n<td>&gt;12.60 V after formation<\/td>\n<td>100%<\/td>\n<\/tr>\n<tr>\n<td>Visual Inspection<\/td>\n<td>\u2014<\/td>\n<td>Case, terminals, label, polarity<\/td>\n<td>100%<\/td>\n<\/tr>\n<tr>\n<td>C20 Capacity<\/td>\n<td>IEC 60095-1<\/td>\n<td>\u226595% of rated 45 Ah<\/td>\n<td>Batch<\/td>\n<\/tr>\n<tr>\n<td>Charge Acceptance<\/td>\n<td>IEC 60095-1<\/td>\n<td>Current at 14.4 V<\/td>\n<td>Batch<\/td>\n<\/tr>\n<tr>\n<td>Vibration<\/td>\n<td>JIS D 5301<\/td>\n<td>\u2014<\/td>\n<td>Batch<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<blockquote>\n<p>100% of units are CCA-tested and OCV-checked; capacity, charge acceptance, and vibration are sampled per batch. Every shipment includes a Certificate of Analysis (CoA).<\/p>\n<\/blockquote>\n<h2>Charging &amp; Service Life<\/h2>\n<ul>\n<li><strong>Charge voltage<\/strong> \u2014 standard SLI absorption 14.4\u201314.8 V; alternator output should sit at 13.8\u201314.4 V in service.<\/li>\n<li><strong>Service life<\/strong> \u2014 2\u20134 years in temperate climates; <strong>18\u201324 months in hot climates (35\u201345 \u00b0C)<\/strong>, where heat is the dominant aging factor.<\/li>\n<\/ul>\n<h2>Sizing Check \u2014 Worked Example<\/h2>\n<p>A 1.5 L gasoline hatchback in two markets shows why the 55B24 is the right call in one and marginal in the other:<\/p>\n<ol>\n<li><strong>Warm climate (SE Asia, 30\u201340 \u00b0C).<\/strong> A 1.5 L engine needs roughly 300\u2013350 CCA. The 370 CCA rating clears this with margin \u2014 heat shortens <em>life<\/em>, not cold-start capability, so the 55B24 is correct.<\/li>\n<li><strong>Cold-winter market (\u221220 \u00b0C).<\/strong> Apply the ~20% cold-weather CCA margin: 370 \u00d7 1.2 \u2248 <strong>444 CCA<\/strong>. The 55B24 is now borderline. If the tray allows (173 mm width), step up to the 55D23 at 500 CCA for guaranteed cold cranking.<\/li>\n<\/ol>\n<p>Runtime arithmetic: 45 Ah (C20) = 2.25 A for 20 hours. A 5 A accessory load draws the battery to full discharge in ~9 hours (45 \u00f7 5) \u2014 in practice, keep discharge above ~50% depth to protect cycle life.<\/p>\n<h2>Cross-Reference<\/h2>\n<table>\n<thead>\n<tr>\n<th>Model<\/th>\n<th>Standard<\/th>\n<th>Relationship<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>N45<\/td>\n<td>JIS<\/td>\n<td>Alias \u2014 same case, 45 Ah class<\/td>\n<\/tr>\n<tr>\n<td>N40<\/td>\n<td>JIS<\/td>\n<td>Alias \u2014 same case, 40 Ah class<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>The 55B24 rating of 45 Ah covers both the N45 and N40 designations. There is <strong>no direct DIN equivalent<\/strong> for the 129 mm narrow frame \u2014 the closest DIN (56638\/DIN66) is a 175 mm-wide case, so DIN-to-JIS substitution here always requires a tray adapter.<\/p>\n<h2>Cross-Standard Equivalents<\/h2>\n<table>\n<thead>\n<tr>\n<th>Standard<\/th>\n<th>Model<\/th>\n<th>Confidence<\/th>\n<th>Note<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>BCI<\/td>\n<td>Group 35 \/ 51R<\/td>\n<td>Medium<\/td>\n<td>Verify terminal type and tray<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<blockquote>\n<p>Cross-standard matches are dimensional approximations only \u2014 electrical specs differ by standard and test method. Always verify tray dimensions, terminal type, and hold-down (B00 vs B13) before substituting.<\/p>\n<\/blockquote>\n<h2>OEM &amp; Private Label Availability<\/h2>\n<p>The 55B24 is available for <strong>OEM manufacturing<\/strong> under your brand from Chengguang Power Tech:<\/p>\n<ul>\n<li>Custom label, case color, terminal type, and retail packaging<\/li>\n<li>Full batch traceability \u2014 raw material lot to shipping container<\/li>\n<li>100% pre-shipment CCA and capacity testing with CoA<\/li>\n<li>DG-compliant export packaging (UN 2794 \/ Class 8)<\/li>\n<li>Technical data sheet, MSDS, and Certificate of Analysis per shipment<\/li>\n<\/ul>\n<p><a href=\"https:\/\/chengguangenergy.com\/contact\/\">Request OEM Quote<\/a> \u00b7 <a href=\"https:\/\/oem.chengguangenergy.com\/oem-process\/\" rel=\"nofollow\">View OEM Process<\/a><\/p>\n<h2>Frequently Asked Questions<\/h2>\n<p><strong>Is N45 the same as 55B24?<\/strong> Yes \u2014 N45 (and N40) are regional names for the same 55B24 case; the 45 Ah rating covers both designations.<\/p>\n<p><strong>Can I upgrade from 55B24 to 55D23?<\/strong> Only if the tray allows \u2014 the 55D23 is 44 mm wider (173 vs 129 mm). Measure before buying.<\/p>\n<p><strong>What BCI group replaces a 55B24?<\/strong> Group 35\/51R is the closest cross-reference, but BCI mounting differs from JIS B00 \u2014 verify terminal type and tray dimensions.<\/p>\n<p><strong>How long does a 55B24 last?<\/strong> 2\u20134 years in temperate climates; 18\u201324 months in hot climates. Regular charging-system checks (alternator 13.8\u201314.4 V) extend service life.<\/p>\n<p><strong>Is the 55B24 maintenance-free?<\/strong> Yes \u2014 the Ca-Ca grid alloy minimizes water loss, so no electrolyte topping-up is required under normal operation.<\/p>\n<h2>Related Models<\/h2>\n<ul>\n<li><a href=\"\/jis-55d23\/\">55D23 Battery<\/a> \u2014 wider (173 mm), higher capacity (60 Ah). Upgrade if the tray allows.<\/li>\n<li><a href=\"\/jis-65d26\/\">65D26 Battery<\/a> \u2014 full-size (260 \u00d7 173 mm) upgrade for larger vehicles.<\/li>\n<li><a href=\"https:\/\/data.chengguangenergy.com\/battery-models\/jis\/55b24\/\" rel=\"nofollow\">55B24 \u2014 Full Specification<\/a><\/li>\n<li><a href=\"\/jis-battery-standard\/\">JIS Battery Standard Guide<\/a><\/li>\n<li><a href=\"https:\/\/chengguangenergy.com\/contact\/\">Request OEM Quote<\/a><\/li>\n<\/ul>\n<h2>Author &amp; Factory Credentials<\/h2>\n<p>Authored by the <strong>Chengguang Engineering Team<\/strong> \u2014 application and process engineers at Chengguang Power Tech, an automotive battery manufacturer in Jinzhou, Hebei, China. Content is reviewed by the <strong>IATF 16949 Quality Department<\/strong> against production data and third-party test reports before publication.<\/p>\n<p><strong>Factory certifications:<\/strong> IATF 16949 (automotive quality) \u00b7 ISO 9001 (quality management) \u00b7 ISO 45001 (occupational safety) \u00b7 CE marking (EU compliance).<\/p>\n<p>Full test reports and the Certificate of Analysis (CoA) are published on the <a href=\"https:\/\/data.chengguangenergy.com\/battery-models\/\" rel=\"nofollow\">Battery Database<\/a> and ship with every order.<\/p>\n<h2>Sources &amp; Verification<\/h2>\n<p>Specifications on this page are sourced from Chengguang Power Tech factory technical documentation and tested to JIS D 5301, DIN EN 50342-1, SAE J537, and IEC 60095-1. Contact Chengguang for the exact data sheet. Every batch ships with a Certificate of Analysis (CoA).<\/p>\n<p><em>Author: Chengguang Engineering Team \u00b7 Reviewed: IATF 16949 Quality Department \u00b7 Last updated: 2026-08-19<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>55B24 (N45\/N40) battery \u2014 45 Ah, 370 CCA JIS compact. Full specs, 238\u00d7129 mm dimensions, vehicle fitment, manufacturing, QC gates, and BCI cross-reference.<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":"","_llm_markdown_disabled":false},"categories":[126],"tags":[],"class_list":["post-310","post","type-post","status-publish","format-standard","hentry","category-battery-market-standards"],"_links":{"self":[{"href":"https:\/\/chengguangenergy.com\/ar\/wp-json\/wp\/v2\/posts\/310","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/chengguangenergy.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/chengguangenergy.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/chengguangenergy.com\/ar\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/chengguangenergy.com\/ar\/wp-json\/wp\/v2\/comments?post=310"}],"version-history":[{"count":1,"href":"https:\/\/chengguangenergy.com\/ar\/wp-json\/wp\/v2\/posts\/310\/revisions"}],"predecessor-version":[{"id":813,"href":"https:\/\/chengguangenergy.com\/ar\/wp-json\/wp\/v2\/posts\/310\/revisions\/813"}],"wp:attachment":[{"href":"https:\/\/chengguangenergy.com\/ar\/wp-json\/wp\/v2\/media?parent=310"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/chengguangenergy.com\/ar\/wp-json\/wp\/v2\/categories?post=310"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/chengguangenergy.com\/ar\/wp-json\/wp\/v2\/tags?post=310"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}