{"id":267,"date":"2025-10-20T07:22:56","date_gmt":"2025-10-20T07:22:56","guid":{"rendered":"https:\/\/www.upgrade-my-laptop.com\/guides\/?p=267"},"modified":"2025-10-20T07:23:58","modified_gmt":"2025-10-20T07:23:58","slug":"what-is-battery-1-and-battery-2-in-lenovo-t480","status":"publish","type":"post","link":"https:\/\/www.upgrade-my-laptop.com\/guides\/laptop-battery-replacement\/lenovo-laptop-battery-replacement\/what-is-battery-1-and-battery-2-in-lenovo-t480\/","title":{"rendered":"What is Battery 1 and Battery 2 in Lenovo T480?"},"content":{"rendered":"<article>\n<header>\n<p>The ThinkPad T480 uses Lenovo\u2019s <strong>Power Bridge<\/strong> design: a <strong>built-in internal battery<\/strong> plus a <strong>hot-swappable external battery<\/strong>. Windows and Lenovo Vantage show two batteries to reflect this. In short: <strong>Battery&nbsp;1 = internal pack<\/strong>, <strong>Battery&nbsp;2 = external pack<\/strong> (the removable one). Below is a practical guide with the exact options, capacities, and purchase links.<\/p>\n<\/header>\n<p>  <!-- Quick nav --><\/p>\n<nav aria-label=\"On this page\" style=\"border:1px solid #e5e7eb;border-radius:10px;padding:12px;background:#fafafa;margin:18px 0;\">\n    <strong>Jump to:<\/strong><br \/>\n    <a href=\"#meaning\" style=\"margin-left:10px;\">Meaning of Battery 1 &#038; 2<\/a> \u2022<br \/>\n    <a href=\"#options\" style=\"margin-left:6px;\">Battery options<\/a> \u2022<br \/>\n    <a href=\"#compare\" style=\"margin-left:6px;\">Comparison table<\/a> \u2022<br \/>\n    <a href=\"#how-it-works\" style=\"margin-left:6px;\">How Power Bridge works<\/a> \u2022<br \/>\n    <a href=\"#replace\" style=\"margin-left:6px;\">Replacement tips<\/a> \u2022<br \/>\n    <a href=\"#faq\" style=\"margin-left:6px;\">FAQ<\/a><br \/>\n  <\/nav>\n<section id=\"meaning\">\n<h2>Battery 1 vs Battery 2 on the T480<\/h2>\n<ul>\n<li><strong>Battery 1 = Internal battery<\/strong> (non-removable from the outside). On T480 this is a <strong>24Wh<\/strong> pack, reference <strong>01AV421<\/strong>.<\/li>\n<li><strong>Battery 2 = External battery<\/strong> (removable). You can choose <strong>24Wh<\/strong>, <strong>48Wh<\/strong>, or <strong>72Wh<\/strong> capacities depending on weight and runtime needs.<\/li>\n<\/ul>\n<p><em>Note:<\/em> Very rarely, software may list them in reverse order after certain BIOS\/firmware updates. Functionally it\u2019s the same idea\u2014one internal, one external.<\/p>\n<\/section>\n<section id=\"options\">\n<h2>Battery options for Lenovo ThinkPad T480<\/h2>\n<p>    <!-- Internal 24Wh --><\/p>\n<div style=\"display:grid;grid-template-columns:140px 1fr;gap:16px;align-items:center;border:1px solid #e5e7eb;border-radius:12px;padding:14px;margin-bottom:14px;\">\n      <a href=\"https:\/\/www.upgrade-my-laptop.com\/battery-for-laptop\/807-lenovo-01av421-24wh-battery.html\" target=\"_blank\" rel=\"noopener\"><br \/>\n        <img decoding=\"async\" src=\"https:\/\/www.upgrade-my-laptop.com\/862-large_default\/lenovo-01av421-24wh-battery.jpg\" alt=\"Lenovo 01AV421 24Wh internal battery for ThinkPad T480\" loading=\"lazy\" width=\"140\" height=\"140\" style=\"display:block;margin:auto;border-radius:10px;object-fit:cover;\"><br \/>\n      <\/a><\/p>\n<div>\n<h3 style=\"margin:0 0 6px 0;\">Battery 1 \u2014 Internal 24Wh (01AV421)<\/h3>\n<p style=\"margin:0 0 8px 0;\">The built-in pack inside the chassis. Replacing it restores baseline health and ensures the Power Bridge system works as intended.<\/p>\n<p style=\"margin:0;\">\n          <a href=\"https:\/\/www.upgrade-my-laptop.com\/battery-for-laptop\/807-lenovo-01av421-24wh-battery.html\" target=\"_blank\" rel=\"noopener\" style=\"display:inline-block;background:#111827;color:#fff;padding:10px 14px;border-radius:8px;text-decoration:none;\">View 01AV421 (24Wh)<\/a>\n        <\/p>\n<\/p><\/div>\n<\/p><\/div>\n<p>    <!-- External 24Wh --><\/p>\n<div style=\"display:grid;grid-template-columns:140px 1fr;gap:16px;align-items:center;border:1px solid #e5e7eb;border-radius:12px;padding:14px;margin-bottom:14px;\">\n      <a href=\"https:\/\/www.upgrade-my-laptop.com\/battery-for-laptop\/808-lenovo-01av423-24wh-battery.html\" target=\"_blank\" rel=\"noopener\"><br \/>\n        <img decoding=\"async\" src=\"https:\/\/www.upgrade-my-laptop.com\/863-large_default\/lenovo-01av423-24wh-battery.jpg\" alt=\"Lenovo 01AV423 24Wh external battery for ThinkPad T480\" loading=\"lazy\" width=\"140\" height=\"140\" style=\"display:block;margin:auto;border-radius:10px;object-fit:cover;\"><br \/>\n      <\/a><\/p>\n<div>\n<h3 style=\"margin:0 0 6px 0;\">Battery 2 \u2014 External 24Wh (01AV423) \u2014 \u201c61\u201d<\/h3>\n<p style=\"margin:0 0 8px 0;\">Slim and light. Keeps the T480\u2019s profile flat while still enabling hot-swap. Great for everyday mobility.<\/p>\n<p style=\"margin:0;\">\n          <a href=\"https:\/\/www.upgrade-my-laptop.com\/battery-for-laptop\/808-lenovo-01av423-24wh-battery.html\" target=\"_blank\" rel=\"noopener\" style=\"display:inline-block;background:#111827;color:#fff;padding:10px 14px;border-radius:8px;text-decoration:none;\">View 01AV423 (24Wh)<\/a>\n        <\/p>\n<\/p><\/div>\n<\/p><\/div>\n<p>    <!-- External 48Wh --><\/p>\n<div style=\"display:grid;grid-template-columns:140px 1fr;gap:16px;align-items:center;border:1px solid #e5e7eb;border-radius:12px;padding:14px;margin-bottom:14px;\">\n      <a href=\"https:\/\/www.upgrade-my-laptop.com\/battery-for-laptop\/809-lenovo-01av425-48whjpg-battery.html\" target=\"_blank\" rel=\"noopener\"><br \/>\n        <img decoding=\"async\" src=\"https:\/\/www.upgrade-my-laptop.com\/864-large_default\/lenovo-01av425-48whjpg-battery.jpg\" alt=\"Lenovo 01AV425 48Wh external battery for ThinkPad T480\" loading=\"lazy\" width=\"140\" height=\"140\" style=\"display:block;margin:auto;border-radius:10px;object-fit:cover;\"><br \/>\n      <\/a><\/p>\n<div>\n<h3 style=\"margin:0 0 6px 0;\">Battery 2 \u2014 External 48Wh (01AV425) \u2014 \u201c61+\u201d<\/h3>\n<p style=\"margin:0 0 8px 0;\">Long-life option. Slightly thicker \u201cwedge\u201d at the back; in return you get meaningfully longer runtime.<\/p>\n<p style=\"margin:0;\">\n          <a href=\"https:\/\/www.upgrade-my-laptop.com\/battery-for-laptop\/809-lenovo-01av425-48whjpg-battery.html\" target=\"_blank\" rel=\"noopener\" style=\"display:inline-block;background:#111827;color:#fff;padding:10px 14px;border-radius:8px;text-decoration:none;\">View 01AV425 (48Wh)<\/a>\n        <\/p>\n<\/p><\/div>\n<\/p><\/div>\n<p>    <!-- External 72Wh --><\/p>\n<div style=\"display:grid;grid-template-columns:140px 1fr;gap:16px;align-items:center;border:1px solid #e5e7eb;border-radius:12px;padding:14px;margin-bottom:6px;\">\n      <a href=\"https:\/\/www.upgrade-my-laptop.com\/battery-for-laptop\/1084-lenovo-72wh-battery-01av427-01av492-61.html\" target=\"_blank\" rel=\"noopener\"><br \/>\n        <img decoding=\"async\" src=\"https:\/\/www.upgrade-my-laptop.com\/1143-large_default\/lenovo-72wh-battery-01av427-01av492-61.jpg\" alt=\"Lenovo 72Wh external battery 61++ (01AV427 \/ 01AV492) for ThinkPad T480\" loading=\"lazy\" width=\"140\" height=\"140\" style=\"display:block;margin:auto;border-radius:10px;object-fit:cover;\"><br \/>\n      <\/a><\/p>\n<div>\n<h3 style=\"margin:0 0 6px 0;\">Battery 2 \u2014 External 72Wh (61++) \u2014 FRU <span style=\"white-space:nowrap;\">01AV427 \/ 01AV492<\/span><\/h3>\n<p style=\"margin:0 0 8px 0;\">Maximum endurance. Largest pack in the 61-family. Expect a noticeable \u201cbump\u201d on the back\u2014perfect for travel days far from outlets.<\/p>\n<p style=\"margin:0;\">\n          <a href=\"https:\/\/www.upgrade-my-laptop.com\/battery-for-laptop\/1084-lenovo-72wh-battery-01av427-01av492-61.html\" target=\"_blank\" rel=\"noopener\" style=\"display:inline-block;background:#111827;color:#fff;padding:10px 14px;border-radius:8px;text-decoration:none;\">View 72Wh 61++ (01AV427\/01AV492)<\/a>\n        <\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/section>\n<section id=\"compare\">\n<h2>Quick comparison<\/h2>\n<div style=\"overflow:auto;border:1px solid #e5e7eb;border-radius:10px;\">\n<table style=\"min-width:760px;border-collapse:collapse;width:100%;\">\n<thead>\n<tr style=\"background:#f3f4f6;\">\n<th style=\"text-align:left;padding:10px;border-bottom:1px solid #e5e7eb;\">Role<\/th>\n<th style=\"text-align:left;padding:10px;border-bottom:1px solid #e5e7eb;\">Lenovo name<\/th>\n<th style=\"text-align:left;padding:10px;border-bottom:1px solid #e5e7eb;\">FRU \/ Part<\/th>\n<th style=\"text-align:right;padding:10px;border-bottom:1px solid #e5e7eb;\">Capacity<\/th>\n<th style=\"text-align:left;padding:10px;border-bottom:1px solid #e5e7eb;\">Best for<\/th>\n<th style=\"text-align:left;padding:10px;border-bottom:1px solid #e5e7eb;\">Product<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding:10px;border-bottom:1px solid #eef2f7;\"><strong>Battery&nbsp;1<\/strong> (internal)<\/td>\n<td style=\"padding:10px;border-bottom:1px solid #eef2f7;\">\u2014<\/td>\n<td style=\"padding:10px;border-bottom:1px solid #eef2f7;\"><strong>01AV421<\/strong><\/td>\n<td style=\"padding:10px;text-align:right;border-bottom:1px solid #eef2f7;\">24Wh<\/td>\n<td style=\"padding:10px;border-bottom:1px solid #eef2f7;\">Restore baseline health; required for hot-swap<\/td>\n<td style=\"padding:10px;border-bottom:1px solid #eef2f7;\"><a href=\"https:\/\/www.upgrade-my-laptop.com\/battery-for-laptop\/807-lenovo-01av421-24wh-battery.html\" target=\"_blank\" rel=\"noopener\">01AV421<\/a><\/td>\n<\/tr>\n<tr>\n<td style=\"padding:10px;border-bottom:1px solid #eef2f7;\"><strong>Battery&nbsp;2<\/strong> (external)<\/td>\n<td style=\"padding:10px;border-bottom:1px solid #eef2f7;\">61<\/td>\n<td style=\"padding:10px;border-bottom:1px solid #eef2f7;\"><strong>01AV423<\/strong><\/td>\n<td style=\"padding:10px;text-align:right;border-bottom:1px solid #eef2f7;\">24Wh<\/td>\n<td style=\"padding:10px;border-bottom:1px solid #eef2f7;\">Slim profile; everyday carry<\/td>\n<td style=\"padding:10px;border-bottom:1px solid #eef2f7;\"><a href=\"https:\/\/www.upgrade-my-laptop.com\/battery-for-laptop\/808-lenovo-01av423-24wh-battery.html\" target=\"_blank\" rel=\"noopener\">01AV423<\/a><\/td>\n<\/tr>\n<tr>\n<td style=\"padding:10px;border-bottom:1px solid #eef2f7;\"><strong>Battery&nbsp;2<\/strong> (external)<\/td>\n<td style=\"padding:10px;border-bottom:1px solid #eef2f7;\">61+<\/td>\n<td style=\"padding:10px;border-bottom:1px solid #eef2f7;\"><strong>01AV425<\/strong><\/td>\n<td style=\"padding:10px;text-align:right;border-bottom:1px solid #eef2f7;\">48Wh<\/td>\n<td style=\"padding:10px;border-bottom:1px solid #eef2f7;\">Longer runtime; light travel<\/td>\n<td style=\"padding:10px;border-bottom:1px solid #eef2f7;\"><a href=\"https:\/\/www.upgrade-my-laptop.com\/battery-for-laptop\/809-lenovo-01av425-48whjpg-battery.html\" target=\"_blank\" rel=\"noopener\">01AV425<\/a><\/td>\n<\/tr>\n<tr>\n<td style=\"padding:10px;\"><strong>Battery&nbsp;2<\/strong> (external)<\/td>\n<td style=\"padding:10px;\">61++<\/td>\n<td style=\"padding:10px;\"><strong>01AV427 \/ 01AV492<\/strong><\/td>\n<td style=\"padding:10px;text-align:right;\">72Wh<\/td>\n<td style=\"padding:10px;\">Maximum endurance; long days away from outlets<\/td>\n<td style=\"padding:10px;\"><a href=\"https:\/\/www.upgrade-my-laptop.com\/battery-for-laptop\/1084-lenovo-72wh-battery-01av427-01av492-61.html\" target=\"_blank\" rel=\"noopener\">61++ (72Wh)<\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<p style=\"margin-top:10px;\"><strong>Total capacity examples:<\/strong> Internal 24Wh + External 24Wh \u2248 <strong>48Wh<\/strong>; Internal 24Wh + External 48Wh \u2248 <strong>72Wh<\/strong>; Internal 24Wh + External 72Wh \u2248 <strong>96Wh<\/strong> (real-world runtime depends on workload and settings).<\/p>\n<\/section>\n<section id=\"how-it-works\">\n<h2>How Power Bridge works (why two batteries?)<\/h2>\n<ul>\n<li><strong>Hot-swap:<\/strong> the internal battery keeps your T480 on while you replace the external pack\u2014no need to shut down.<\/li>\n<li><strong>Modularity:<\/strong> choose a slim external (24Wh) for light days or a higher-capacity pack (48\/72Wh) for long trips.<\/li>\n<li><strong>Longevity:<\/strong> frequently replacing the external pack is easier and can reduce wear on the internal cell.<\/li>\n<\/ul>\n<\/section>\n<section id=\"replace\">\n<h2>Replacement &#038; care tips<\/h2>\n<h3>Checking health<\/h3>\n<ol>\n<li>Open <strong>Lenovo Vantage<\/strong> \u2192 <em>Device<\/em> \u2192 <em>Power<\/em> to view the condition of both batteries.<\/li>\n<li>Or run <code>powercfg \/batteryreport<\/code> in Windows (Command Prompt as admin) and open the generated HTML report.<\/li>\n<\/ol>\n<h3>Replacing the external battery (Battery 2)<\/h3>\n<ol>\n<li>Shut down apps; keep the laptop <strong>on AC power<\/strong> (optional but safe).<\/li>\n<li>Slide the latch and remove the external pack; insert the new one until it clicks.<\/li>\n<li>That\u2019s it\u2014Power Bridge makes it trivial.<\/li>\n<\/ol>\n<h3>Replacing the internal battery (Battery 1)<\/h3>\n<ol>\n<li>Power off and unplug the adapter.<\/li>\n<li>Remove the external battery.<\/li>\n<li>Unscrew and lift the bottom cover carefully.<\/li>\n<li>Disconnect the internal battery cable; swap in the new <strong>01AV421 (24Wh)<\/strong>.<\/li>\n<li>Reconnect, close up, and boot. Calibrate once (charge to 100% \u2192 discharge to ~10\u201315%).<\/li>\n<\/ol>\n<h3>Best practices<\/h3>\n<ul>\n<li>Avoid heat build-up (blocked vents, car dashboards in summer).<\/li>\n<li>If you dock often, consider using a higher-capacity <strong>external<\/strong> as your \u201cdaily\u201d pack\u2014easy to swap when worn.<\/li>\n<li>Occasional partial cycles (e.g., 20\u201380%) can help long-term health.<\/li>\n<\/ul>\n<\/section>\n<section id=\"faq\">\n<h2>FAQ<\/h2>\n<h3>Does the T480 work without the external battery?<\/h3>\n<p>Yes. The internal 24Wh pack (01AV421) powers the laptop on its own; the external battery extends runtime and enables hot-swap.<\/p>\n<h3>Which external pack is right for me?<\/h3>\n<p><strong>24Wh (61 \/ 01AV423)<\/strong> for a flat, light profile; <strong>48Wh (61+ \/ 01AV425)<\/strong> for longer days; <strong>72Wh (61++ \/ 01AV427 or 01AV492)<\/strong> for maximum endurance.<\/p>\n<h3>Will the 72Wh battery make the laptop thicker?<\/h3>\n<p>Yes\u2014it creates a noticeable \u201cwedge\u201d at the rear. In return, you get significantly longer runtime, popular for travel and fieldwork.<\/p>\n<\/section>\n<section id=\"buy\">\n<h2>Buy the correct batteries for T480<\/h2>\n<ul>\n<li>Battery 1 \u2014 Internal 24Wh <strong>01AV421<\/strong>:<br \/>\n        <a href=\"https:\/\/www.upgrade-my-laptop.com\/battery-for-laptop\/807-lenovo-01av421-24wh-battery.html\" target=\"_blank\" rel=\"noopener\">Product page<\/a>\n      <\/li>\n<li>Battery 2 \u2014 External 24Wh <strong>01AV423<\/strong> (Lenovo 61):<br \/>\n        <a href=\"https:\/\/www.upgrade-my-laptop.com\/battery-for-laptop\/808-lenovo-01av423-24wh-battery.html\" target=\"_blank\" rel=\"noopener\">Product page<\/a>\n      <\/li>\n<li>Battery 2 \u2014 External 48Wh <strong>01AV425<\/strong> (Lenovo 61+):<br \/>\n        <a href=\"https:\/\/www.upgrade-my-laptop.com\/battery-for-laptop\/809-lenovo-01av425-48whjpg-battery.html\" target=\"_blank\" rel=\"noopener\">Product page<\/a>\n      <\/li>\n<li>Battery 2 \u2014 External 72Wh <strong>61++<\/strong> (FRU <strong>01AV427 \/ 01AV492<\/strong>):<br \/>\n        <a href=\"https:\/\/www.upgrade-my-laptop.com\/battery-for-laptop\/1084-lenovo-72wh-battery-01av427-01av492-61.html\" target=\"_blank\" rel=\"noopener\">Product page<\/a>\n      <\/li>\n<\/ul>\n<p style=\"margin-top:8px;\"><em>Tip:<\/em> Combine <strong>internal 24Wh<\/strong> with the external of your choice to tailor total capacity to your day.<\/p>\n<\/section>\n<footer style=\"margin-top:22px;border-top:1px solid #e5e7eb;padding-top:14px;\">\n<p><strong>Bottom line:<\/strong> On the T480, <strong>Battery 1<\/strong> is the <strong>internal 24Wh (01AV421)<\/strong>. <strong>Battery 2<\/strong> is the <strong>external pack<\/strong> you choose\u2014<strong>24Wh (01AV423)<\/strong>, <strong>48Wh (01AV425)<\/strong>, or <strong>72Wh (61++ 01AV427\/01AV492)<\/strong>\u2014and it\u2019s hot-swappable thanks to Power Bridge.<\/p>\n<\/footer>\n<\/article>\n<p><!-- Optional: structured data (FAQ) --><br \/>\n<script type=\"application\/ld+json\">\n{\n  \"@context\":\"https:\/\/schema.org\",\n  \"@type\":\"FAQPage\",\n  \"mainEntity\":[\n    {\n      \"@type\":\"Question\",\n      \"name\":\"What is Battery 1 on Lenovo T480?\",\n      \"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Battery 1 is the internal 24Wh pack (FRU 01AV421).\"}\n    },\n    {\n      \"@type\":\"Question\",\n      \"name\":\"What is Battery 2 on Lenovo T480?\",\n      \"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Battery 2 is the removable external pack. You can use 24Wh (01AV423, Lenovo 61), 48Wh (01AV425, 61+), or 72Wh (61++, FRU 01AV427\/01AV492).\"}\n    },\n    {\n      \"@type\":\"Question\",\n      \"name\":\"Can I hot-swap the external battery?\",\n      \"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. The internal battery keeps the laptop on while you replace the external pack, which is the essence of Lenovo\u2019s Power Bridge system.\"}\n    }\n  ]\n}\n<\/script><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The ThinkPad T480 uses Lenovo\u2019s Power Bridge design: a built-in internal battery plus a hot-swappable external battery. Windows and Lenovo [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[6],"tags":[],"class_list":["post-267","post","type-post","status-publish","format-standard","hentry","category-lenovo-laptop-battery-replacement"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What is Battery 1 and Battery 2 in Lenovo T480? - Upgrade Guides &amp; Tips<\/title>\n<meta name=\"description\" content=\"On the Lenovo ThinkPad T480, \u201cBattery 1\u201d is the internal 24Wh pack (01AV421) and \u201cBattery 2\u201d is the hot-swappable external pack (24Wh 01AV423, 48Wh 01AV425, or 72Wh 61++ 01AV427\/01AV492). 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