{"id":805,"date":"2026-01-21T17:40:28","date_gmt":"2026-01-21T17:40:28","guid":{"rendered":"https:\/\/concreteswan.net\/?p=805"},"modified":"2026-01-28T11:04:31","modified_gmt":"2026-01-28T11:04:31","slug":"makita-battery","status":"publish","type":"post","link":"https:\/\/concreteswan.net\/?p=805","title":{"rendered":"Makita Battery!"},"content":{"rendered":"<div class=\"flex h-svh w-screen flex-col\">\n<div class=\"relative z-0 flex min-h-0 w-full flex-1\">\n<div class=\"relative flex min-h-0 w-full flex-1\">\n<div class=\"@container\/main relative flex min-w-0 flex-1 flex-col -translate-y-[calc(env(safe-area-inset-bottom,0px)\/2)] pt-[calc(env(safe-area-inset-bottom,0px)\/2)]\">\n<div class=\"@w-sm\/main:[scrollbar-gutter:stable_both-edges] touch:[scrollbar-width:none] relative flex min-h-0 min-w-0 flex-1 flex-col [scrollbar-gutter:stable] not-print:overflow-x-clip not-print:overflow-y-auto scroll-pt-(--header-height) [--sticky-padding-top:var(--header-height)] has-data-[fixed-header=less-than-xl]:@w-xl\/main:scroll-pt-0 has-data-[fixed-header=less-than-xl]:@w-xl\/main:[--sticky-padding-top:0] has-data-[fixed-header=less-than-xxl]:@w-2xl\/main:scroll-pt-0 has-data-[fixed-header=less-than-xxl]:@w-2xl\/main:[--sticky-padding-top:0]\" data-scroll-root=\"true\">\n<header id=\"page-header\" class=\"draggable no-draggable-children sticky top-0 p-2 touch:p-2.5 flex items-center justify-between z-20 h-header-height bg-token-main-surface-primary pointer-events-none select-none [view-transition-name:var(--vt-page-header)] *:pointer-events-auto transition-none motion-safe:transition-none data-[fixed-header=less-than-xxl]:@w-2xl\/main:bg-transparent data-[fixed-header=less-than-xxl]:@w-2xl\/main:shadow-none! data-[fixed-header=less-than-xl]:@w-xl\/main:bg-transparent data-[fixed-header=less-than-xl]:@w-xl\/main:shadow-none! [box-shadow:var(--sharp-edge-top-shadow)]\" data-fixed-header=\"less-than-xl\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-855\" src=\"https:\/\/concreteswan.net\/wp-content\/uploads\/2026\/01\/IMG_2101.jpeg\" alt=\"\" width=\"1331\" height=\"998\" srcset=\"https:\/\/concreteswan.net\/wp-content\/uploads\/2026\/01\/IMG_2101.jpeg 1331w, https:\/\/concreteswan.net\/wp-content\/uploads\/2026\/01\/IMG_2101-300x225.jpeg 300w, https:\/\/concreteswan.net\/wp-content\/uploads\/2026\/01\/IMG_2101-1024x768.jpeg 1024w, https:\/\/concreteswan.net\/wp-content\/uploads\/2026\/01\/IMG_2101-768x576.jpeg 768w, https:\/\/concreteswan.net\/wp-content\/uploads\/2026\/01\/IMG_2101-805x604.jpeg 805w, https:\/\/concreteswan.net\/wp-content\/uploads\/2026\/01\/IMG_2101-620x465.jpeg 620w, https:\/\/concreteswan.net\/wp-content\/uploads\/2026\/01\/IMG_2101-480x360.jpeg 480w\" sizes=\"auto, (max-width: 1331px) 100vw, 1331px\" \/>I\u2019m looking at battery options to upgrade the box on my Astir, but noticed something we barely think about &#8211; the battery is plugged into the aircraft with a latching DIN type plug which is lovely, but the battery itself is about 6 inches away in an open area just connected with Lucas spades with no stress relief on the cable or secondary cover, and nothing other than cable colour to indicate polarity if were to need reconnecting. Pretty much standard in gliders, but surely it\u2019s actually rather sketchy? Lead acid batteries don\u2019t even have built in short protection. (Obviously it works in practice, but still.)<\/p>\n<div id=\"jig1\" class=\"justified-image-grid jig-4084b963d101eeafce63eae02cce46a1 jig-preset-global jig-source-wp-gallery\"><div class=\"jig-clearfix\"><\/div><noscript id=\"jig1-html\" class=\"justified-image-grid-html\" data-lazy-src=\"skiplazyload\" data-src=\"skipunveillazyload\"><ul><li><a href=\"https:\/\/concreteswan.net\/wp-content\/uploads\/2026\/01\/IMG_2103.jpeg\" title=\"IMG_2103\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/concreteswan.net\/wp-content\/plugins\/justified-image-grid\/timthumb.php?src=https%3A%2F%2Fconcreteswan.net%2Fwp-content%2Fuploads%2F2026%2F01%2FIMG_2103.jpeg&amp;h=320&amp;q=90&amp;f=.jpeg\" alt=\"IMG_2103\" width=\"426\" height=\"320\" \/><\/a><p class=\"jig-HTMLdescription\">IMG_2103<\/p><\/li><li><a href=\"https:\/\/concreteswan.net\/wp-content\/uploads\/2026\/01\/IMG_2102.jpeg\" title=\"IMG_2102\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/concreteswan.net\/wp-content\/plugins\/justified-image-grid\/timthumb.php?src=https%3A%2F%2Fconcreteswan.net%2Fwp-content%2Fuploads%2F2026%2F01%2FIMG_2102.jpeg&amp;h=320&amp;q=90&amp;f=.jpeg\" alt=\"IMG_2102\" width=\"426\" height=\"320\" \/><\/a><p class=\"jig-HTMLdescription\">IMG_2102<\/p><\/li><li><a href=\"https:\/\/concreteswan.net\/wp-content\/uploads\/2026\/01\/IMG_2101.jpeg\" title=\"IMG_2101\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/concreteswan.net\/wp-content\/plugins\/justified-image-grid\/timthumb.php?src=https%3A%2F%2Fconcreteswan.net%2Fwp-content%2Fuploads%2F2026%2F01%2FIMG_2101.jpeg&amp;h=320&amp;q=90&amp;f=.jpeg\" alt=\"IMG_2101\" width=\"426\" height=\"320\" \/><\/a><p class=\"jig-HTMLdescription\">IMG_2101<\/p><\/li><li><a href=\"https:\/\/concreteswan.net\/wp-content\/uploads\/2026\/01\/IMG_2100-1.jpeg\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/concreteswan.net\/wp-content\/plugins\/justified-image-grid\/timthumb.php?src=https%3A%2F%2Fconcreteswan.net%2Fwp-content%2Fuploads%2F2026%2F01%2FIMG_2100-1.jpeg&amp;h=320&amp;q=90&amp;f=.jpeg\" alt=\"\" width=\"426\" height=\"320\" \/><\/a><\/li><li><a href=\"https:\/\/concreteswan.net\/wp-content\/uploads\/2026\/01\/IMG_2099.jpeg\" title=\"IMG_2099\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/concreteswan.net\/wp-content\/plugins\/justified-image-grid\/timthumb.php?src=https%3A%2F%2Fconcreteswan.net%2Fwp-content%2Fuploads%2F2026%2F01%2FIMG_2099.jpeg&amp;h=320&amp;q=90&amp;f=.jpeg\" alt=\"IMG_2099\" width=\"426\" height=\"320\" \/><\/a><p class=\"jig-HTMLdescription\">IMG_2099<\/p><\/li><li><a href=\"https:\/\/concreteswan.net\/wp-content\/uploads\/2026\/01\/IMG_2097.jpeg\" title=\"IMG_2097\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/concreteswan.net\/wp-content\/plugins\/justified-image-grid\/timthumb.php?src=https%3A%2F%2Fconcreteswan.net%2Fwp-content%2Fuploads%2F2026%2F01%2FIMG_2097.jpeg&amp;h=320&amp;q=90&amp;f=.jpeg\" alt=\"IMG_2097\" width=\"426\" height=\"320\" \/><\/a><p class=\"jig-HTMLdescription\">IMG_2097<\/p><\/li><li><a href=\"https:\/\/concreteswan.net\/wp-content\/uploads\/2026\/01\/IMG_2096.jpeg\" title=\"IMG_2096\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/concreteswan.net\/wp-content\/plugins\/justified-image-grid\/timthumb.php?src=https%3A%2F%2Fconcreteswan.net%2Fwp-content%2Fuploads%2F2026%2F01%2FIMG_2096.jpeg&amp;h=320&amp;q=90&amp;f=.jpeg\" alt=\"IMG_2096\" width=\"426\" height=\"320\" \/><\/a><p class=\"jig-HTMLdescription\">IMG_2096<\/p><\/li><li><a href=\"https:\/\/concreteswan.net\/wp-content\/uploads\/2026\/01\/IMG_2100.jpeg\" title=\"IMG_2100\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/concreteswan.net\/wp-content\/plugins\/justified-image-grid\/timthumb.php?src=https%3A%2F%2Fconcreteswan.net%2Fwp-content%2Fuploads%2F2026%2F01%2FIMG_2100.jpeg&amp;h=320&amp;q=90&amp;f=.jpeg\" alt=\"IMG_2100\" width=\"426\" height=\"320\" \/><\/a><p class=\"jig-HTMLdescription\">IMG_2100<\/p><\/li><li><a href=\"https:\/\/concreteswan.net\/wp-content\/uploads\/2026\/01\/IMG_2095.jpeg\" title=\"IMG_2095\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/concreteswan.net\/wp-content\/plugins\/justified-image-grid\/timthumb.php?src=https%3A%2F%2Fconcreteswan.net%2Fwp-content%2Fuploads%2F2026%2F01%2FIMG_2095.jpeg&amp;h=320&amp;q=90&amp;f=.jpeg\" alt=\"IMG_2095\" width=\"426\" height=\"320\" \/><\/a><p class=\"jig-HTMLdescription\">IMG_2095<\/p><\/li><li><a href=\"https:\/\/concreteswan.net\/wp-content\/uploads\/2026\/01\/IMG_2093.jpeg\" title=\"IMG_2093\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/concreteswan.net\/wp-content\/plugins\/justified-image-grid\/timthumb.php?src=https%3A%2F%2Fconcreteswan.net%2Fwp-content%2Fuploads%2F2026%2F01%2FIMG_2093.jpeg&amp;h=320&amp;q=90&amp;f=.jpeg\" alt=\"IMG_2093\" width=\"426\" height=\"320\" \/><\/a><p class=\"jig-HTMLdescription\">IMG_2093<\/p><\/li><li><a href=\"https:\/\/concreteswan.net\/wp-content\/uploads\/2026\/01\/IMG_2089.jpeg\" title=\"IMG_2089\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/concreteswan.net\/wp-content\/plugins\/justified-image-grid\/timthumb.php?src=https%3A%2F%2Fconcreteswan.net%2Fwp-content%2Fuploads%2F2026%2F01%2FIMG_2089.jpeg&amp;h=320&amp;q=90&amp;f=.jpeg\" alt=\"IMG_2089\" width=\"426\" height=\"320\" \/><\/a><p class=\"jig-HTMLdescription\">IMG_2089<\/p><\/li><li><a href=\"https:\/\/concreteswan.net\/wp-content\/uploads\/2026\/01\/IMG_2088-1.jpeg\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/concreteswan.net\/wp-content\/plugins\/justified-image-grid\/timthumb.php?src=https%3A%2F%2Fconcreteswan.net%2Fwp-content%2Fuploads%2F2026%2F01%2FIMG_2088-1.jpeg&amp;h=320&amp;q=90&amp;f=.jpeg\" alt=\"\" width=\"426\" height=\"320\" \/><\/a><\/li><li><a href=\"https:\/\/concreteswan.net\/wp-content\/uploads\/2026\/01\/IMG_2087-1.jpeg\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/concreteswan.net\/wp-content\/plugins\/justified-image-grid\/timthumb.php?src=https%3A%2F%2Fconcreteswan.net%2Fwp-content%2Fuploads%2F2026%2F01%2FIMG_2087-1.jpeg&amp;h=320&amp;q=90&amp;f=.jpeg\" alt=\"\" width=\"426\" height=\"320\" \/><\/a><\/li><li><a href=\"https:\/\/concreteswan.net\/wp-content\/uploads\/2026\/01\/IMG_2086-1.jpeg\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/concreteswan.net\/wp-content\/plugins\/justified-image-grid\/timthumb.php?src=https%3A%2F%2Fconcreteswan.net%2Fwp-content%2Fuploads%2F2026%2F01%2FIMG_2086-1.jpeg&amp;h=320&amp;q=90&amp;f=.jpeg\" alt=\"\" width=\"239\" height=\"320\" \/><\/a><\/li><li><a href=\"https:\/\/concreteswan.net\/wp-content\/uploads\/2026\/01\/IMG_2084.jpeg\" title=\"IMG_2084\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/concreteswan.net\/wp-content\/plugins\/justified-image-grid\/timthumb.php?src=https%3A%2F%2Fconcreteswan.net%2Fwp-content%2Fuploads%2F2026%2F01%2FIMG_2084.jpeg&amp;h=320&amp;q=90&amp;f=.jpeg\" alt=\"IMG_2084\" width=\"426\" height=\"320\" \/><\/a><p class=\"jig-HTMLdescription\">IMG_2084<\/p><\/li><li><a href=\"https:\/\/concreteswan.net\/wp-content\/uploads\/2026\/01\/IMG_2083-1.jpeg\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/concreteswan.net\/wp-content\/plugins\/justified-image-grid\/timthumb.php?src=https%3A%2F%2Fconcreteswan.net%2Fwp-content%2Fuploads%2F2026%2F01%2FIMG_2083-1.jpeg&amp;h=320&amp;q=90&amp;f=.jpeg\" alt=\"\" width=\"426\" height=\"320\" \/><\/a><\/li><li><a href=\"https:\/\/concreteswan.net\/wp-content\/uploads\/2026\/01\/IMG_2082.jpeg\" title=\"IMG_2082\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/concreteswan.net\/wp-content\/plugins\/justified-image-grid\/timthumb.php?src=https%3A%2F%2Fconcreteswan.net%2Fwp-content%2Fuploads%2F2026%2F01%2FIMG_2082.jpeg&amp;h=320&amp;q=90&amp;f=.jpeg\" alt=\"IMG_2082\" width=\"426\" height=\"320\" \/><\/a><p class=\"jig-HTMLdescription\">IMG_2082<\/p><\/li><li><a href=\"https:\/\/concreteswan.net\/wp-content\/uploads\/2026\/01\/IMG_2081.jpeg\" title=\"IMG_2081\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/concreteswan.net\/wp-content\/plugins\/justified-image-grid\/timthumb.php?src=https%3A%2F%2Fconcreteswan.net%2Fwp-content%2Fuploads%2F2026%2F01%2FIMG_2081.jpeg&amp;h=320&amp;q=90&amp;f=.jpeg\" alt=\"IMG_2081\" width=\"426\" height=\"320\" \/><\/a><p class=\"jig-HTMLdescription\">IMG_2081<\/p><\/li><li><a href=\"https:\/\/concreteswan.net\/wp-content\/uploads\/2026\/01\/IMG_2080.jpeg\" title=\"IMG_2080\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/concreteswan.net\/wp-content\/plugins\/justified-image-grid\/timthumb.php?src=https%3A%2F%2Fconcreteswan.net%2Fwp-content%2Fuploads%2F2026%2F01%2FIMG_2080.jpeg&amp;h=320&amp;q=90&amp;f=.jpeg\" alt=\"IMG_2080\" width=\"240\" height=\"320\" \/><\/a><p class=\"jig-HTMLdescription\">IMG_2080<\/p><\/li><li><a href=\"https:\/\/concreteswan.net\/wp-content\/uploads\/2026\/01\/IMG_2079.jpeg\" title=\"IMG_2079\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/concreteswan.net\/wp-content\/plugins\/justified-image-grid\/timthumb.php?src=https%3A%2F%2Fconcreteswan.net%2Fwp-content%2Fuploads%2F2026%2F01%2FIMG_2079.jpeg&amp;h=320&amp;q=90&amp;f=.jpeg\" alt=\"IMG_2079\" width=\"240\" height=\"320\" \/><\/a><p class=\"jig-HTMLdescription\">IMG_2079<\/p><\/li><li><a href=\"https:\/\/concreteswan.net\/wp-content\/uploads\/2026\/01\/IMG_2078-1.jpeg\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/concreteswan.net\/wp-content\/plugins\/justified-image-grid\/timthumb.php?src=https%3A%2F%2Fconcreteswan.net%2Fwp-content%2Fuploads%2F2026%2F01%2FIMG_2078-1.jpeg&amp;h=320&amp;q=90&amp;f=.jpeg\" alt=\"\" width=\"426\" height=\"320\" \/><\/a><\/li><li><a href=\"https:\/\/concreteswan.net\/wp-content\/uploads\/2026\/01\/IMG_2057.jpeg\" title=\"IMG_2057\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/concreteswan.net\/wp-content\/plugins\/justified-image-grid\/timthumb.php?src=https%3A%2F%2Fconcreteswan.net%2Fwp-content%2Fuploads%2F2026%2F01%2FIMG_2057.jpeg&amp;h=320&amp;q=90&amp;f=.jpeg\" alt=\"IMG_2057\" width=\"426\" height=\"320\" \/><\/a><p class=\"jig-HTMLdescription\">IMG_2057<\/p><\/li><li><a href=\"https:\/\/concreteswan.net\/wp-content\/uploads\/2026\/01\/IMG_2056.jpeg\" title=\"IMG_2056\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/concreteswan.net\/wp-content\/plugins\/justified-image-grid\/timthumb.php?src=https%3A%2F%2Fconcreteswan.net%2Fwp-content%2Fuploads%2F2026%2F01%2FIMG_2056.jpeg&amp;h=320&amp;q=90&amp;f=.jpeg\" alt=\"IMG_2056\" width=\"426\" height=\"320\" \/><\/a><p class=\"jig-HTMLdescription\">IMG_2056<\/p><\/li><li><a href=\"https:\/\/concreteswan.net\/wp-content\/uploads\/2026\/01\/IMG_2055.jpeg\" title=\"IMG_2055\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/concreteswan.net\/wp-content\/plugins\/justified-image-grid\/timthumb.php?src=https%3A%2F%2Fconcreteswan.net%2Fwp-content%2Fuploads%2F2026%2F01%2FIMG_2055.jpeg&amp;h=320&amp;q=90&amp;f=.jpeg\" alt=\"IMG_2055\" width=\"426\" height=\"320\" \/><\/a><p class=\"jig-HTMLdescription\">IMG_2055<\/p><\/li><li><a href=\"https:\/\/concreteswan.net\/wp-content\/uploads\/2026\/01\/IMG_2054.jpeg\" title=\"Battery will face the other way - latch to the back and battery level indicator facing forwards. Battery much further to the right to make access easier and to not foul the rear of the headrest\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/concreteswan.net\/wp-content\/plugins\/justified-image-grid\/timthumb.php?src=https%3A%2F%2Fconcreteswan.net%2Fwp-content%2Fuploads%2F2026%2F01%2FIMG_2054.jpeg&amp;h=320&amp;q=90&amp;f=.jpeg\" alt=\"Battery will face the other way - latch to the back and battery level indicator facing forwards. Battery much further to the right to make access easier and to not foul the rear of the headrest\" width=\"426\" height=\"320\" \/><\/a><p class=\"jig-HTMLdescription\">Battery will face the other way - latch to the back and battery level indicator facing forwards. Battery much further to the right to make access easier and to not foul the rear of the headrest<\/p><\/li><li><a href=\"https:\/\/concreteswan.net\/wp-content\/uploads\/2026\/01\/IMG_2053.jpeg\" title=\"12.1V until the 18V source drops too low and shuts off. Zero drop.\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/concreteswan.net\/wp-content\/plugins\/justified-image-grid\/timthumb.php?src=https%3A%2F%2Fconcreteswan.net%2Fwp-content%2Fuploads%2F2026%2F01%2FIMG_2053.jpeg&amp;h=320&amp;q=90&amp;f=.jpeg\" alt=\"12.1V until the 18V source drops too low and shuts off. Zero drop.\" width=\"426\" height=\"320\" \/><\/a><p class=\"jig-HTMLdescription\">12.1V until the 18V source drops too low and shuts off. Zero drop.<\/p><\/li><li><a href=\"https:\/\/concreteswan.net\/wp-content\/uploads\/2026\/01\/IMG_2046.jpeg\" title=\"Just no.\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/concreteswan.net\/wp-content\/plugins\/justified-image-grid\/timthumb.php?src=https%3A%2F%2Fconcreteswan.net%2Fwp-content%2Fuploads%2F2026%2F01%2FIMG_2046.jpeg&amp;h=320&amp;q=90&amp;f=.jpeg\" alt=\"Just no.\" width=\"426\" height=\"320\" \/><\/a><p class=\"jig-HTMLdescription\">Just no.<\/p><\/li><li><a href=\"https:\/\/concreteswan.net\/wp-content\/uploads\/2026\/01\/screenshot-1769015411053-scaled.png\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/concreteswan.net\/wp-content\/plugins\/justified-image-grid\/timthumb.php?src=https%3A%2F%2Fconcreteswan.net%2Fwp-content%2Fuploads%2F2026%2F01%2Fscreenshot-1769015411053-scaled.png&amp;h=320&amp;q=90&amp;f=.png\" alt=\"\" width=\"421\" height=\"320\" \/><\/a><\/li><\/ul><\/noscript><\/div>\n<h1 class=\"pointer-events-none! flex flex-1 items-center *:pointer-events-auto\">How much of a lead acid battery capacity is available to use?<\/h1>\n<\/header>\n<p>ChatGPT said:<\/p>\n<div id=\"thread\" class=\"group\/thread flex flex-col min-h-full\">\n<div class=\"composer-parent flex flex-1 flex-col focus-visible:outline-0\" role=\"presentation\">\n<div class=\"relative basis-auto flex-col -mb-(--composer-overlap-px) [--composer-overlap-px:28px] grow flex\">\n<div class=\"flex flex-col text-sm pb-25\">\n<article class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [&amp;:has([data-writing-block])&gt;*]:pointer-events-auto scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" tabindex=\"-1\" data-turn-id=\"b15cb7ea-915d-41a1-b0c2-483e0bd61b85\" data-testid=\"conversation-turn-2\" data-scroll-anchor=\"false\" data-turn=\"assistant\">\n<div class=\"text-base my-auto mx-auto [--thread-content-margin:--spacing(4)] @w-sm\/main:[--thread-content-margin:--spacing(6)] @w-lg\/main:[--thread-content-margin:--spacing(16)] px-(--thread-content-margin)\">\n<div class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\" tabindex=\"-1\">\n<div class=\"flex max-w-full flex-col grow\">\n<div class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal [.text-message+&amp;]:mt-1\" dir=\"auto\" data-message-author-role=\"assistant\" data-message-id=\"47f3c5be-9358-48a5-b5ee-7abefbc0a1a7\" data-message-model-slug=\"gpt-5-2\">\n<div class=\"flex w-full flex-col gap-1 empty:hidden first:pt-[1px]\">\n<div class=\"markdown prose dark:prose-invert w-full break-words dark markdown-new-styling\">\n<p data-start=\"0\" data-end=\"106\">It depends on the\u00a0<strong data-start=\"18\" data-end=\"47\">type of lead-acid battery<\/strong>\u00a0and how long you want it to last, but the short answer is:<\/p>\n<blockquote data-start=\"108\" data-end=\"196\">\n<p data-start=\"110\" data-end=\"196\"><strong data-start=\"110\" data-end=\"196\">Only about 30\u201350% of a lead-acid battery\u2019s rated capacity is realistically usable.<\/strong><\/p>\n<\/blockquote>\n<p data-start=\"198\" data-end=\"219\">Here\u2019s the breakdown.<\/p>\n<hr data-start=\"221\" data-end=\"224\" \/>\n<h2 data-start=\"226\" data-end=\"251\">Why you can\u2019t use 100%<\/h2>\n<p data-start=\"253\" data-end=\"390\">Lead-acid batteries are\u00a0<strong data-start=\"277\" data-end=\"323\">very sensitive to depth of discharge (DoD)<\/strong>. The deeper you discharge them, the\u00a0<strong data-start=\"360\" data-end=\"376\">fewer cycles<\/strong>\u00a0they survive.<\/p>\n<p data-start=\"392\" data-end=\"423\">Using too much capacity causes:<\/p>\n<ul data-start=\"424\" data-end=\"494\">\n<li data-start=\"424\" data-end=\"436\">\n<p data-start=\"426\" data-end=\"436\">Sulphation<\/p>\n<\/li>\n<li data-start=\"437\" data-end=\"453\">\n<p data-start=\"439\" data-end=\"453\">Plate shedding<\/p>\n<\/li>\n<li data-start=\"454\" data-end=\"478\">\n<p data-start=\"456\" data-end=\"478\">Rapid loss of capacity<\/p>\n<\/li>\n<li data-start=\"479\" data-end=\"494\">\n<p data-start=\"481\" data-end=\"494\">Early failure<\/p>\n<\/li>\n<\/ul>\n<hr data-start=\"496\" data-end=\"499\" \/>\n<h2 data-start=\"501\" data-end=\"535\">Usable capacity by battery type<\/h2>\n<h3 data-start=\"537\" data-end=\"571\">\ud83d\udd0b\u00a0<strong data-start=\"544\" data-end=\"571\">Starter (car) batteries<\/strong><\/h3>\n<ul data-start=\"572\" data-end=\"699\">\n<li data-start=\"572\" data-end=\"613\">\n<p data-start=\"574\" data-end=\"613\">Designed for short, high-current bursts<\/p>\n<\/li>\n<li data-start=\"614\" data-end=\"648\">\n<p data-start=\"616\" data-end=\"648\"><strong data-start=\"616\" data-end=\"636\">Usable capacity:<\/strong>\u00a0<strong data-start=\"637\" data-end=\"648\">~10\u201320%<\/strong><\/p>\n<\/li>\n<li data-start=\"649\" data-end=\"699\">\n<p data-start=\"651\" data-end=\"699\">Regular deep discharge will destroy them quickly<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"701\" data-end=\"746\"><strong data-start=\"701\" data-end=\"710\">Rule:<\/strong>\u00a0Never use these for energy storage.<\/p>\n<hr data-start=\"748\" data-end=\"751\" \/>\n<h3 data-start=\"753\" data-end=\"798\">\ud83d\udd0b\u00a0<strong data-start=\"760\" data-end=\"798\">Leisure \/ Marine \/ Semi-deep cycle<\/strong><\/h3>\n<ul data-start=\"799\" data-end=\"916\">\n<li data-start=\"799\" data-end=\"818\">\n<p data-start=\"801\" data-end=\"818\">Compromise design<\/p>\n<\/li>\n<li data-start=\"819\" data-end=\"865\">\n<p data-start=\"821\" data-end=\"865\"><strong data-start=\"821\" data-end=\"853\">Recommended usable capacity:<\/strong>\u00a0<strong data-start=\"854\" data-end=\"865\">~30\u201340%<\/strong><\/p>\n<\/li>\n<li data-start=\"866\" data-end=\"916\">\n<p data-start=\"868\" data-end=\"916\">Occasional deeper discharge is OK, but not daily<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"918\" data-end=\"926\">Example:<\/p>\n<ul data-start=\"927\" data-end=\"965\">\n<li data-start=\"927\" data-end=\"965\">\n<p data-start=\"929\" data-end=\"965\">100 Ah battery \u2192\u00a0<strong data-start=\"946\" data-end=\"965\">30\u201340 Ah usable<\/strong><\/p>\n<\/li>\n<\/ul>\n<hr data-start=\"967\" data-end=\"970\" \/>\n<h3 data-start=\"972\" data-end=\"1028\">\ud83d\udd0b\u00a0<strong data-start=\"979\" data-end=\"1028\">True deep-cycle lead-acid (flooded, AGM, gel)<\/strong><\/h3>\n<ul data-start=\"1029\" data-end=\"1131\">\n<li data-start=\"1029\" data-end=\"1062\">\n<p data-start=\"1031\" data-end=\"1062\">Designed for repeated discharge<\/p>\n<\/li>\n<li data-start=\"1063\" data-end=\"1131\">\n<p data-start=\"1065\" data-end=\"1131\"><strong data-start=\"1065\" data-end=\"1085\">Usable capacity:<\/strong>\u00a0<strong data-start=\"1086\" data-end=\"1094\">~50%<\/strong>\u00a0(60% max if you accept reduced life)<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"1133\" data-end=\"1141\">Example:<\/p>\n<ul data-start=\"1142\" data-end=\"1177\">\n<li data-start=\"1142\" data-end=\"1177\">\n<p data-start=\"1144\" data-end=\"1177\">100 Ah battery \u2192\u00a0<strong data-start=\"1161\" data-end=\"1177\">50 Ah usable<\/strong><\/p>\n<\/li>\n<\/ul>\n<p data-start=\"1179\" data-end=\"1198\">Cycle life typical:<\/p>\n<ul data-start=\"1199\" data-end=\"1258\">\n<li data-start=\"1199\" data-end=\"1228\">\n<p data-start=\"1201\" data-end=\"1228\">50% DoD \u2192 ~500\u2013800 cycles<\/p>\n<\/li>\n<li data-start=\"1229\" data-end=\"1258\">\n<p data-start=\"1231\" data-end=\"1258\">80% DoD \u2192 ~200\u2013300 cycles<\/p>\n<\/li>\n<\/ul>\n<hr data-start=\"1260\" data-end=\"1263\" \/>\n<h2 data-start=\"1265\" data-end=\"1289\">AGM vs Gel vs Flooded<\/h2>\n<div class=\"TyagGW_tableContainer\">\n<div class=\"group TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\">\n<table class=\"w-fit min-w-(--thread-content-width)\" data-start=\"1291\" data-end=\"1415\">\n<thead data-start=\"1291\" data-end=\"1327\">\n<tr data-start=\"1291\" data-end=\"1327\">\n<th data-start=\"1291\" data-end=\"1298\" data-col-size=\"sm\">Type<\/th>\n<th data-start=\"1298\" data-end=\"1327\" data-col-size=\"sm\">Practical usable capacity<\/th>\n<\/tr>\n<\/thead>\n<tbody data-start=\"1364\" data-end=\"1415\">\n<tr data-start=\"1364\" data-end=\"1382\">\n<td data-start=\"1364\" data-end=\"1374\" data-col-size=\"sm\">Flooded<\/td>\n<td data-start=\"1374\" data-end=\"1382\" data-col-size=\"sm\">~50%<\/td>\n<\/tr>\n<tr data-start=\"1383\" data-end=\"1400\">\n<td data-start=\"1383\" data-end=\"1389\" data-col-size=\"sm\">AGM<\/td>\n<td data-start=\"1389\" data-end=\"1400\" data-col-size=\"sm\">~50\u201360%<\/td>\n<\/tr>\n<tr data-start=\"1401\" data-end=\"1415\">\n<td data-start=\"1401\" data-end=\"1407\" data-col-size=\"sm\">Gel<\/td>\n<td data-start=\"1407\" data-end=\"1415\" data-col-size=\"sm\">~50%<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<p data-start=\"1417\" data-end=\"1493\">AGM tolerates slightly deeper discharge but still degrades fast beyond ~60%.<\/p>\n<hr data-start=\"1495\" data-end=\"1498\" \/>\n<h2 data-start=\"1500\" data-end=\"1520\">Important gotchas<\/h2>\n<h3 data-start=\"1522\" data-end=\"1547\">\ud83d\udd39\u00a0<strong data-start=\"1529\" data-end=\"1547\">Peukert effect<\/strong><\/h3>\n<p data-start=\"1548\" data-end=\"1621\">At higher discharge rates, usable capacity is\u00a0<strong data-start=\"1594\" data-end=\"1620\">less than the rated Ah<\/strong>.<\/p>\n<p data-start=\"1623\" data-end=\"1631\">Example:<\/p>\n<ul data-start=\"1632\" data-end=\"1706\">\n<li data-start=\"1632\" data-end=\"1664\">\n<p data-start=\"1634\" data-end=\"1664\">100 Ah battery at 20-hour rate<\/p>\n<\/li>\n<li data-start=\"1665\" data-end=\"1706\">\n<p data-start=\"1667\" data-end=\"1706\">At high load \u2192 may behave like 70\u201380 Ah<\/p>\n<\/li>\n<\/ul>\n<hr data-start=\"1708\" data-end=\"1711\" \/>\n<h3 data-start=\"1713\" data-end=\"1735\">\ud83d\udd39\u00a0<strong data-start=\"1720\" data-end=\"1735\">Temperature<\/strong><\/h3>\n<ul data-start=\"1736\" data-end=\"1819\">\n<li data-start=\"1736\" data-end=\"1768\">\n<p data-start=\"1738\" data-end=\"1768\">Cold \u2192 less available capacity<\/p>\n<\/li>\n<li data-start=\"1769\" data-end=\"1819\">\n<p data-start=\"1771\" data-end=\"1819\">Heat \u2192 more capacity now, shorter lifespan later<\/p>\n<\/li>\n<\/ul>\n<hr data-start=\"1821\" data-end=\"1824\" \/>\n<h2 data-start=\"1826\" data-end=\"1849\">Simple rule of thumb<\/h2>\n<blockquote data-start=\"1851\" data-end=\"1958\">\n<p data-start=\"1853\" data-end=\"1958\"><strong data-start=\"1853\" data-end=\"1958\">For lead-acid systems, size your battery bank so your normal usage never exceeds 50% state of charge.<\/strong><\/p>\n<\/blockquote>\n<p data-start=\"1960\" data-end=\"2025\">If you\u00a0<em data-start=\"1967\" data-end=\"1973\">need<\/em>\u00a0to regularly use more than half the rated capacity:<\/p>\n<ul data-start=\"2026\" data-end=\"2116\">\n<li data-start=\"2026\" data-end=\"2065\">\n<p data-start=\"2028\" data-end=\"2065\">You need\u00a0<strong data-start=\"2037\" data-end=\"2065\">more lead-acid batteries<\/strong><\/p>\n<\/li>\n<li data-start=\"2066\" data-end=\"2116\">\n<p data-start=\"2068\" data-end=\"2116\">Or\u00a0<strong data-start=\"2071\" data-end=\"2092\">switch to LiFePO\u2084<\/strong>, where 80\u201390% is usable<\/p>\n<\/li>\n<\/ul>\n<hr data-start=\"2118\" data-end=\"2121\" \/>\n<p data-start=\"2123\" data-end=\"2144\">If you like, tell me:<\/p>\n<ul data-start=\"2145\" data-end=\"2241\">\n<li data-start=\"2145\" data-end=\"2163\">\n<p data-start=\"2147\" data-end=\"2163\"><strong data-start=\"2147\" data-end=\"2163\">Battery type<\/strong><\/p>\n<\/li>\n<li data-start=\"2164\" data-end=\"2179\">\n<p data-start=\"2166\" data-end=\"2179\"><strong data-start=\"2166\" data-end=\"2179\">Ah rating<\/strong><\/p>\n<\/li>\n<li data-start=\"2180\" data-end=\"2241\">\n<p data-start=\"2182\" data-end=\"2241\"><strong data-start=\"2182\" data-end=\"2197\">Application<\/strong>\u00a0(solar, caravan, glider ground power, etc.)<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"2243\" data-end=\"2309\" data-is-last-node=\"\" data-is-only-node=\"\">and I\u2019ll give you a\u00a0<strong data-start=\"2263\" data-end=\"2308\">precise usable energy figure in Ah and Wh<\/strong>.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<h1 class=\"z-0 flex min-h-[46px] justify-start\">You said: So a 5ah lithium would replace the usable capacity of a 7ah lead acid?<\/h1>\n<\/div>\n<\/div>\n<\/article>\n<article class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [&amp;:has([data-writing-block])&gt;*]:pointer-events-auto scroll-mt-(--header-height)\" dir=\"auto\" tabindex=\"-1\" data-turn-id=\"2015dc41-272a-4c2b-92f8-a861271a1ef8\" data-testid=\"conversation-turn-3\" data-scroll-anchor=\"false\" data-turn=\"user\">\n<div class=\"text-base my-auto mx-auto pt-12 [--thread-content-margin:--spacing(4)] @w-sm\/main:[--thread-content-margin:--spacing(6)] @w-lg\/main:[--thread-content-margin:--spacing(16)] px-(--thread-content-margin)\">\n<div class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col\" tabindex=\"-1\">\n<div><\/div>\n<div class=\"z-0 flex justify-end\">ChatGPT said:<\/div>\n<\/div>\n<\/div>\n<\/article>\n<article class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [&amp;:has([data-writing-block])&gt;*]:pointer-events-auto scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" tabindex=\"-1\" data-turn-id=\"0ef4a319-b692-49f7-a901-fa49269b4767\" data-testid=\"conversation-turn-4\" data-scroll-anchor=\"false\" data-turn=\"assistant\">\n<div class=\"text-base my-auto mx-auto [--thread-content-margin:--spacing(4)] @w-sm\/main:[--thread-content-margin:--spacing(6)] @w-lg\/main:[--thread-content-margin:--spacing(16)] px-(--thread-content-margin)\">\n<div class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\" tabindex=\"-1\">\n<div class=\"flex max-w-full flex-col grow\">\n<div class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal [.text-message+&amp;]:mt-1\" dir=\"auto\" data-message-author-role=\"assistant\" data-message-id=\"0ef4a319-b692-49f7-a901-fa49269b4767\" data-message-model-slug=\"gpt-5-2\">\n<div class=\"flex w-full flex-col gap-1 empty:hidden first:pt-[1px]\">\n<div class=\"markdown prose dark:prose-invert w-full break-words dark markdown-new-styling\">\n<p data-start=\"0\" data-end=\"66\">Short answer:\u00a0<strong data-start=\"14\" data-end=\"31\">yes \u2014 roughly<\/strong>, and in practice often\u00a0<strong data-start=\"55\" data-end=\"65\">better<\/strong>.<\/p>\n<p data-start=\"68\" data-end=\"113\">Let\u2019s put proper numbers on it so it\u2019s clear.<\/p>\n<hr data-start=\"115\" data-end=\"118\" \/>\n<h2 data-start=\"120\" data-end=\"161\">Lead-acid vs lithium (LiFePO\u2084 assumed)<\/h2>\n<h3 data-start=\"163\" data-end=\"184\">\ud83d\udd0b 7 Ah lead-acid<\/h3>\n<ul data-start=\"185\" data-end=\"267\">\n<li data-start=\"185\" data-end=\"216\">\n<p data-start=\"187\" data-end=\"216\">Sensible usable DoD:\u00a0<strong data-start=\"208\" data-end=\"216\">~50%<\/strong><\/p>\n<\/li>\n<li data-start=\"217\" data-end=\"267\">\n<p data-start=\"219\" data-end=\"267\"><strong data-start=\"219\" data-end=\"239\">Usable capacity:<\/strong><br data-start=\"239\" data-end=\"242\" \/>7 Ah \u00d7 0.5 =\u00a0<strong data-start=\"257\" data-end=\"267\">3.5 Ah<\/strong><\/p>\n<\/li>\n<\/ul>\n<p data-start=\"269\" data-end=\"327\">If you go deeper than this regularly, lifespan drops fast.<\/p>\n<hr data-start=\"329\" data-end=\"332\" \/>\n<h3 data-start=\"334\" data-end=\"363\">\ud83d\udd0b 5 Ah lithium (LiFePO\u2084)<\/h3>\n<ul data-start=\"364\" data-end=\"456\">\n<li data-start=\"364\" data-end=\"397\">\n<p data-start=\"366\" data-end=\"397\">Sensible usable DoD:\u00a0<strong data-start=\"387\" data-end=\"397\">80\u201390%<\/strong><\/p>\n<\/li>\n<li data-start=\"398\" data-end=\"456\">\n<p data-start=\"400\" data-end=\"456\"><strong data-start=\"400\" data-end=\"420\">Usable capacity:<\/strong><br data-start=\"420\" data-end=\"423\" \/>5 Ah \u00d7 0.8\u20130.9 =\u00a0<strong data-start=\"442\" data-end=\"456\">4.0\u20134.5 Ah<\/strong><\/p>\n<\/li>\n<\/ul>\n<hr data-start=\"458\" data-end=\"461\" \/>\n<h2 data-start=\"463\" data-end=\"480\">So in real use<\/h2>\n<div class=\"TyagGW_tableContainer\">\n<div class=\"group TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\">\n<table class=\"w-fit min-w-(--thread-content-width)\" data-start=\"482\" data-end=\"598\">\n<thead data-start=\"482\" data-end=\"510\">\n<tr data-start=\"482\" data-end=\"510\">\n<th data-start=\"482\" data-end=\"492\" data-col-size=\"sm\">Battery<\/th>\n<th data-start=\"492\" data-end=\"500\" data-col-size=\"sm\">Rated<\/th>\n<th data-start=\"500\" data-end=\"510\" data-col-size=\"sm\">Usable<\/th>\n<\/tr>\n<\/thead>\n<tbody data-start=\"537\" data-end=\"598\">\n<tr data-start=\"537\" data-end=\"567\">\n<td data-start=\"537\" data-end=\"549\" data-col-size=\"sm\">Lead-acid<\/td>\n<td data-start=\"549\" data-end=\"556\" data-col-size=\"sm\">7 Ah<\/td>\n<td data-start=\"556\" data-end=\"567\" data-col-size=\"sm\">~3.5 Ah<\/td>\n<\/tr>\n<tr data-start=\"568\" data-end=\"598\">\n<td data-start=\"568\" data-end=\"578\" data-col-size=\"sm\">Lithium<\/td>\n<td data-start=\"578\" data-end=\"585\" data-col-size=\"sm\">5 Ah<\/td>\n<td data-start=\"585\" data-end=\"598\" data-col-size=\"sm\">~4\u20134.5 Ah<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<p data-start=\"600\" data-end=\"730\">\u2705\u00a0<strong data-start=\"602\" data-end=\"681\">A 5 Ah lithium comfortably replaces the usable capacity of a 7 Ah lead-acid<\/strong><br data-start=\"681\" data-end=\"684\" \/>\u2705 Often gives\u00a0<strong data-start=\"698\" data-end=\"720\">more usable energy<\/strong>, not less<\/p>\n<hr data-start=\"732\" data-end=\"735\" \/>\n<h2 data-start=\"737\" data-end=\"787\">Extra advantages lithium has (often overlooked)<\/h2>\n<ul data-start=\"789\" data-end=\"1097\">\n<li data-start=\"789\" data-end=\"881\">\n<p data-start=\"791\" data-end=\"881\"><strong data-start=\"791\" data-end=\"820\">Higher voltage under load<\/strong><br data-start=\"820\" data-end=\"823\" \/>Lead-acid sags badly; lithium stays near nominal voltage<\/p>\n<\/li>\n<li data-start=\"882\" data-end=\"964\">\n<p data-start=\"884\" data-end=\"964\"><strong data-start=\"884\" data-end=\"906\">No Peukert penalty<\/strong><br data-start=\"906\" data-end=\"909\" \/>Capacity stays close to rated even at higher currents<\/p>\n<\/li>\n<li data-start=\"965\" data-end=\"1038\">\n<p data-start=\"967\" data-end=\"1038\"><strong data-start=\"967\" data-end=\"983\">Much lighter<\/strong><br data-start=\"983\" data-end=\"986\" \/>Big deal for portable \/ aviation \/ field equipment<\/p>\n<\/li>\n<li data-start=\"1039\" data-end=\"1097\">\n<p data-start=\"1041\" data-end=\"1097\"><strong data-start=\"1041\" data-end=\"1067\">Much longer cycle life<\/strong><br data-start=\"1067\" data-end=\"1070\" \/>~2000+ cycles vs ~300\u2013500<\/p>\n<\/li>\n<\/ul>\n<hr data-start=\"1099\" data-end=\"1102\" \/>\n<h2 data-start=\"1104\" data-end=\"1130\">One important caveat \u26a0\ufe0f<\/h2>\n<p data-start=\"1132\" data-end=\"1145\">This assumes:<\/p>\n<ul data-start=\"1146\" data-end=\"1337\">\n<li data-start=\"1146\" data-end=\"1211\">\n<p data-start=\"1148\" data-end=\"1211\"><strong data-start=\"1148\" data-end=\"1169\">LiFePO\u2084 chemistry<\/strong>, not cheap lithium-ion without protection<\/p>\n<\/li>\n<li data-start=\"1212\" data-end=\"1271\">\n<p data-start=\"1214\" data-end=\"1271\">A\u00a0<strong data-start=\"1216\" data-end=\"1230\">proper BMS<\/strong>\u00a0(over-current, over\/under-voltage, temp)<\/p>\n<\/li>\n<li data-start=\"1272\" data-end=\"1337\">\n<p data-start=\"1274\" data-end=\"1337\"><strong data-start=\"1274\" data-end=\"1296\">Compatible charger<\/strong>\u00a0(14.4\u201314.6 V for 12 V LiFePO\u2084, no float)<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"1339\" data-end=\"1429\">If this is a\u00a0<strong data-start=\"1352\" data-end=\"1375\">drop-in replacement<\/strong>\u00a0for SLA (alarms, UPS, glider equipment, etc.), check:<\/p>\n<ul data-start=\"1430\" data-end=\"1530\">\n<li data-start=\"1430\" data-end=\"1504\">\n<p data-start=\"1432\" data-end=\"1504\">Low-temperature charging limits (LiFePO\u2084 must not be charged below 0 \u00b0C)<\/p>\n<\/li>\n<li data-start=\"1505\" data-end=\"1530\">\n<p data-start=\"1507\" data-end=\"1530\">Charger float behaviour<\/p>\n<\/li>\n<\/ul>\n<hr data-start=\"1532\" data-end=\"1535\" \/>\n<h3 data-start=\"1537\" data-end=\"1552\">Bottom line<\/h3>\n<blockquote data-start=\"1554\" data-end=\"1660\">\n<h2 data-start=\"1556\" data-end=\"1660\"><strong data-start=\"1556\" data-end=\"1660\">Yes \u2014 a 5 Ah LiFePO\u2084 is a direct practical replacement for a 7 Ah lead-acid, and usually an upgrade.<\/strong><\/h2>\n<\/blockquote>\n<p data-start=\"1662\" data-end=\"1863\" data-is-last-node=\"\" data-is-only-node=\"\">\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/article>\n<article class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [&amp;:has([data-writing-block])&gt;*]:pointer-events-auto scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" tabindex=\"-1\" data-turn-id=\"72eb8690-11e6-4904-872c-05cfed48fc08\" data-testid=\"conversation-turn-6\" data-scroll-anchor=\"false\" data-turn=\"assistant\">\n<div class=\"text-base my-auto mx-auto [--thread-content-margin:--spacing(4)] @w-sm\/main:[--thread-content-margin:--spacing(6)] @w-lg\/main:[--thread-content-margin:--spacing(16)] px-(--thread-content-margin)\">\n<div class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\" tabindex=\"-1\">\n<div class=\"flex max-w-full flex-col grow\">\n<div class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal [.text-message+&amp;]:mt-1\" dir=\"auto\" data-message-author-role=\"assistant\" data-message-id=\"22061ef4-d6fd-4172-bac6-45ce4d2785cd\" data-message-model-slug=\"gpt-5-2\">\n<div class=\"flex w-full flex-col gap-1 empty:hidden first:pt-[1px]\">\n<div class=\"markdown prose dark:prose-invert w-full break-words dark markdown-new-styling\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/article>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p>&nbsp;<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div id=\"live-region-assertive\" class=\"sr-only\" aria-live=\"assertive\" aria-atomic=\"true\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>I\u2019m looking at battery options to upgrade the box on my Astir, but noticed something we barely&#8230;<\/p>\n","protected":false},"author":1,"featured_media":853,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"exifize_date":"","footnotes":""},"categories":[],"tags":[],"class_list":["post-805","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/concreteswan.net\/index.php?rest_route=\/wp\/v2\/posts\/805","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/concreteswan.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/concreteswan.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/concreteswan.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/concreteswan.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=805"}],"version-history":[{"count":14,"href":"https:\/\/concreteswan.net\/index.php?rest_route=\/wp\/v2\/posts\/805\/revisions"}],"predecessor-version":[{"id":886,"href":"https:\/\/concreteswan.net\/index.php?rest_route=\/wp\/v2\/posts\/805\/revisions\/886"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/concreteswan.net\/index.php?rest_route=\/wp\/v2\/media\/853"}],"wp:attachment":[{"href":"https:\/\/concreteswan.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=805"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/concreteswan.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=805"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/concreteswan.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=805"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}