{"id":29686,"date":"2025-09-16T09:43:11","date_gmt":"2025-09-16T01:43:11","guid":{"rendered":"https:\/\/manlybattery.com\/?page_id=29686"},"modified":"2025-09-16T09:48:55","modified_gmt":"2025-09-16T01:48:55","slug":"calculadora-de-tamanho-de-grupo-bci-de-tamanho-de-bateria-rv","status":"publish","type":"page","link":"https:\/\/manlybattery.com\/pt\/battery-tools-and-resources\/rv-battery-size-bci-group-size-calculator\/","title":{"rendered":"Calculadora de tamanho de bateria de RV e tamanho de grupo BCI"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"29686\" class=\"elementor elementor-29686\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4699ad47 e-flex e-con-boxed e-con e-parent\" data-id=\"4699ad47\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e59b86d elementor-widget elementor-widget-heading\" data-id=\"e59b86d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">RV Battery Size &amp; BCI Group Size Calculator<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-40fd109d elementor-widget elementor-widget-text-editor\" data-id=\"40fd109d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Enter your daily loads and this battery size calculator returns the required Ah\/Wh, then maps a BCI group size (24\/27\/31) that fits your tray. If weight or recharge time is your bottleneck, it flags a lithium battery replacement or a practical battery upgrade plan with charge-time estimates.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7f6b963 elementor-widget elementor-widget-html\" data-id=\"7f6b963\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t\t<!-- RV Battery Size Calculator (responsive mobile fix: table scroll + full-width callouts) -->\r\n<div id=\"rvbatt-calc\" class=\"rvbatt-calc-wrapper\" lang=\"en\" data-widget=\"rv-battery-calculator\">\r\n  <style>\r\n    \/* ===== Scoped styles: only affect #rvbatt-calc ===== *\/\r\n    #rvbatt-calc{font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;max-width:880px;margin:1.25rem auto;border:1px solid #e5e7eb;border-radius:12px;padding:16px;background:#fff}\r\n    #rvbatt-calc *{box-sizing:border-box}\r\n    #rvbatt-calc h2,#rvbatt-calc h3{margin:.4rem 0 .6rem 0;line-height:1.25}\r\n    #rvbatt-calc h2{font-size:1.35rem}\r\n    #rvbatt-calc h3{font-size:1.05rem}\r\n    #rvbatt-calc p{margin:.5rem 0}\r\n    #rvbatt-calc .muted{color:#6b7280;font-size:.9rem}\r\n\r\n    \/* layout helpers *\/\r\n    #rvbatt-calc .grid{display:grid;gap:10px}\r\n    #rvbatt-calc .grid.cols-2{grid-template-columns:1fr 1fr}\r\n    #rvbatt-calc .grid.cols-3{grid-template-columns:repeat(3,1fr)}\r\n    #rvbatt-calc .card{border:1px solid #e5e7eb;border-radius:10px;padding:12px}\r\n\r\n    \/* inputs *\/\r\n    #rvbatt-calc label{font-weight:600;display:block;margin-bottom:4px}\r\n    #rvbatt-calc input[type=\"number\"],#rvbatt-calc input[type=\"text\"],#rvbatt-calc select{width:100%;padding:8px 10px;border:1px solid #d1d5db;border-radius:8px;font:inherit}\r\n\r\n    \/* table: wrap in a horizontal scroller on small screens *\/\r\n    #rvbatt-calc .table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;border:1px solid #e5e7eb;border-radius:10px}\r\n    #rvbatt-calc .table-scroll::-webkit-scrollbar{height:8px}\r\n    #rvbatt-calc .table-scroll::-webkit-scrollbar-thumb{background:#d1d5db;border-radius:999px}\r\n    #rvbatt-calc table{min-width:560px;width:100%;border-collapse:separate;border-spacing:0}\r\n    #rvbatt-calc th,#rvbatt-calc td{padding:8px 10px;border-bottom:1px solid #e5e7eb;text-align:left;font-size:.95rem;white-space:nowrap}\r\n    #rvbatt-calc th{background:#f9fafb;font-weight:700}\r\n\r\n    \/* buttons *\/\r\n    #rvbatt-calc .btn{appearance:none;border:1px solid #111827;background:#111827;color:#fff;border-radius:8px;padding:8px 12px;cursor:pointer;font-weight:700}\r\n    #rvbatt-calc .btn.small{padding:6px 10px;font-weight:600}\r\n    \/* light-blue per request *\/\r\n    #rvbatt-calc .btn.primary{background:#e0f2fe;border-color:#93c5fd;color:#0f172a}\r\n    #rvbatt-calc .btn.primary:hover{filter:brightness(.97)}\r\n    #rvbatt-calc .btn.secondary{border-color:#d1d5db;background:#fff;color:#111827}\r\n\r\n    \/* KPIs & callouts *\/\r\n    #rvbatt-calc .kpi{display:flex;gap:10px;flex-wrap:wrap}\r\n    #rvbatt-calc .kpi .pill{padding:8px 12px;border-radius:999px;background:#f3f4f6;border:1px solid #e5e7eb;font-weight:700}\r\n    #rvbatt-calc .callout{background:#f0fdf4;border:1px solid #bbf7d0;padding:12px;border-radius:8px;font-size:.95rem}\r\n    #rvbatt-calc .note{background:#eff6ff;border:1px solid #bfdbfe;padding:10px;border-radius:8px}\r\n    #rvbatt-calc .warn{background:#fff7ed;border:1px solid #fed7aa;padding:10px;border-radius:8px}\r\n    #rvbatt-calc .foot{color:#6b7280;font-size:.85rem;margin-top:.6rem}\r\n\r\n    \/* responsive tweaks *\/\r\n    @media (max-width:680px){\r\n      #rvbatt-calc{padding:12px}\r\n      #rvbatt-calc h2{font-size:1.2rem}\r\n      #rvbatt-calc h3{font-size:1rem}\r\n      #rvbatt-calc .grid.cols-3{grid-template-columns:1fr}\r\n      #rvbatt-calc .grid.cols-2{grid-template-columns:1fr}       \/* make callouts full-width *\/\r\n      #rvbatt-calc .kpi .pill{font-size:.9rem}\r\n      #rvbatt-calc .btn.small{padding:6px 10px}\r\n    }\r\n  <\/style>\r\n\r\n  <h2>RV Battery Size Calculator<\/h2>\r\n  <p>Size your rv battery by daily loads first, then map the result to a BCI case or a drop-in lithium module. This widget is fully self-contained and won\u2019t affect other content on your Elementor page.<\/p>\r\n\r\n  <div class=\"card\" aria-labelledby=\"rvbatt-loads-h3\">\r\n    <h3 id=\"rvbatt-loads-h3\">1) List Your Loads (Watts \u00d7 Hours Per Day)<\/h3>\r\n    <!-- horizontal scroll wrapper prevents page overflow on phones -->\r\n    <div class=\"table-scroll\" role=\"region\" aria-label=\"Scrollable load table\">\r\n      <table aria-label=\"Load table\">\r\n        <thead>\r\n          <tr>\r\n            <th scope=\"col\">Device<\/th>\r\n            <th scope=\"col\">Watts<\/th>\r\n            <th scope=\"col\">Hours\/Day<\/th>\r\n            <th scope=\"col\">Wh\/Day<\/th>\r\n            <th scope=\"col\">Action<\/th>\r\n          <\/tr>\r\n        <\/thead>\r\n        <tbody id=\"rvbatt-rows\"><\/tbody>\r\n        <tfoot>\r\n          <tr>\r\n            <td colspan=\"5\" style=\"background:#fff;\">\r\n              <button type=\"button\" class=\"btn small primary\" id=\"rvbatt-add\">+ Add Load<\/button>\r\n              <button type=\"button\" class=\"btn small secondary\" id=\"rvbatt-reset\">Reset<\/button>\r\n            <\/td>\r\n          <\/tr>\r\n        <\/tfoot>\r\n      <\/table>\r\n    <\/div>\r\n    <p class=\"muted\">Tip: Start with fridge, lights, water pump, fans, outlets, and any inverter loads.<\/p>\r\n  <\/div>\r\n\r\n  <div class=\"grid cols-3\">\r\n    <div class=\"card\">\r\n      <h3>2) System &amp; Assumptions<\/h3>\r\n      <label for=\"rvbatt-voltage\">System Voltage<\/label>\r\n      <select id=\"rvbatt-voltage\" aria-label=\"Battery system voltage\">\r\n        <option value=\"12\">12V (typical)<\/option>\r\n        <option value=\"24\">24V<\/option>\r\n      <\/select>\r\n\r\n      <label for=\"rvbatt-days\">Days of Autonomy<\/label>\r\n      <input id=\"rvbatt-days\" type=\"number\" min=\"1\" step=\"1\" value=\"1\" inputmode=\"numeric\"\/>\r\n\r\n      <label for=\"rvbatt-margin\">Safety Margin<\/label>\r\n      <select id=\"rvbatt-margin\">\r\n        <option value=\"1.1\">+10%<\/option>\r\n        <option value=\"1.2\" selected>+20% (recommended)<\/option>\r\n        <option value=\"1.3\">+30%<\/option>\r\n      <\/select>\r\n    <\/div>\r\n\r\n    <div class=\"card\" id=\"chem-card\">\r\n      <h3>3) Chemistry &amp; Usable Depth (Choose One)<\/h3>\r\n      <div role=\"radiogroup\" aria-label=\"Chemistry\">\r\n        <label><input type=\"radio\" name=\"rvbatt-chem\" value=\"LA\" checked> Lead-acid<\/label>\r\n        <label style=\"margin-left:12px;\"><input type=\"radio\" name=\"rvbatt-chem\" value=\"LFP\"> LiFePO4<\/label>\r\n      <\/div>\r\n\r\n      <div id=\"rvbatt-dod-la-wrap\" style=\"margin-top:8px;\">\r\n        <label for=\"rvbatt-dod-la\">Lead-acid Usable Fraction<\/label>\r\n        <select id=\"rvbatt-dod-la\">\r\n          <option value=\"0.5\" selected>50% (longevity-friendly)<\/option>\r\n          <option value=\"0.6\">60%<\/option>\r\n        <\/select>\r\n      <\/div>\r\n\r\n      <div id=\"rvbatt-dod-li-wrap\" style=\"margin-top:8px;display:none;\">\r\n        <label for=\"rvbatt-dod-li\">LiFePO4 Usable Fraction<\/label>\r\n        <select id=\"rvbatt-dod-li\">\r\n          <option value=\"0.8\">80%<\/option>\r\n          <option value=\"0.9\" selected>90% (typical)<\/option>\r\n          <option value=\"1\">100% (max usable)<\/option>\r\n        <\/select>\r\n      <\/div>\r\n\r\n      <div class=\"note\" style=\"margin-top:8px;\">\r\n        <strong>What does \u201cusable fraction\u201d mean?<\/strong>\r\n        <div>Lead-acid banks are commonly sized around ~50% depth-of-discharge for life. LiFePO4 packs allow a much higher usable fraction thanks to their BMS and flatter voltage curve.<\/div>\r\n      <\/div>\r\n    <\/div>\r\n\r\n    <div class=\"card\">\r\n      <h3>4) Charge Time Estimate<\/h3>\r\n      <label for=\"rvbatt-charger\">Charger\/DC-DC Current (A)<\/label>\r\n      <input id=\"rvbatt-charger\" type=\"number\" min=\"1\" step=\"1\" value=\"30\" inputmode=\"numeric\"\/>\r\n      <p class=\"muted\">Charge time uses the <em>selected<\/em> chemistry\u2019s required Ah: Hours \u2248 Required Ah \u00f7 charger amps \u00d7 1.15.<\/p>\r\n      <button class=\"btn primary\" id=\"rvbatt-calc-btn\" type=\"button\" aria-label=\"Run calculation\">Calculate<\/button>\r\n    <\/div>\r\n  <\/div>\r\n\r\n  <div class=\"card\" id=\"rvbatt-results\" aria-live=\"polite\" aria-atomic=\"true\">\r\n    <h3>Results<\/h3>\r\n    <div class=\"kpi\">\r\n      <div class=\"pill\" id=\"rvbatt-wh\">Daily Load: 0 Wh<\/div>\r\n      <div class=\"pill\" id=\"rvbatt-ah\">Required (Selected): 0 Ah<\/div>\r\n      <div class=\"pill\" id=\"rvbatt-time\">Charge Time: \u2013<\/div>\r\n    <\/div>\r\n\r\n    <!-- callouts auto become 1 column on mobile -->\r\n    <div class=\"grid cols-2\" style=\"margin-top:10px\">\r\n      <div class=\"callout\" id=\"rvbatt-lead-reco\" style=\"display:none;\">\r\n        <strong>Lead-acid Recommendation<\/strong>\r\n        <div class=\"muted\">Based on common RV charts for Group 24\/27\/31.<\/div>\r\n        <div id=\"rvbatt-lead-text\"><\/div>\r\n      <\/div>\r\n      <div class=\"callout\" id=\"rvbatt-lith-reco\" style=\"display:none;\">\r\n        <strong>Lithium Recommendation<\/strong>\r\n        <div class=\"muted\">Assumes 12V 100Ah LiFePO4 modules with BMS.<\/div>\r\n        <div id=\"rvbatt-lith-text\"><\/div>\r\n      <\/div>\r\n    <\/div>\r\n\r\n    <details class=\"foot\">\r\n      <summary>Notes &amp; Standards<\/summary>\r\n      <div>Typical lead-acid ranges: Group 24 \u2248 70\u201385Ah, Group 27 \u2248 85\u2013105Ah, Group 31 \u2248 95\u2013125Ah. Verify the exact spec sheet and follow transport\/wiring practices (UN38.3; ABYC E-13).<\/div>\r\n    <\/details>\r\n  <\/div>\r\n\r\n  <p class=\"muted\">Use this tool to size an rv battery bank and match a practical bci group size or a drop-in lithium battery replacement based on your daily loads.<\/p>\r\n\r\n  <script>\r\n  (function(){\r\n    const $ = (s, r=document)=>r.querySelector(s);\r\n    const $$ = (s, r=document)=>Array.from(r.querySelectorAll(s));\r\n    const scope = document.getElementById('rvbatt-calc');\r\n\r\n    const LA_GROUPS = [{group:'Group 24',maxAh:85},{group:'Group 27',maxAh:105},{group:'Group 31',maxAh:125}];\r\n    const LA_TYPS = {'Group 24':80,'Group 27':95,'Group 31':110};\r\n\r\n    const rowsTbody = $('#rvbatt-rows', scope);\r\n    const addRow = (name='',watts=0,hours=0)=>{\r\n      const tr=document.createElement('tr');\r\n      tr.innerHTML=`\r\n        <td><input type=\"text\" aria-label=\"Device name\" value=\"${name}\"><\/td>\r\n        <td><input type=\"number\" aria-label=\"Watts\" min=\"0\" step=\"1\" value=\"${watts}\"><\/td>\r\n        <td><input type=\"number\" aria-label=\"Hours per day\" min=\"0\" step=\"0.1\" value=\"${hours}\"><\/td>\r\n        <td class=\"wh-cell\">0<\/td>\r\n        <td><button type=\"button\" class=\"btn small secondary del\">Remove<\/button><\/td>`;\r\n      rowsTbody.appendChild(tr);\r\n      updateRowWh(tr);\r\n      tr.querySelector('.del').addEventListener('click',()=>{tr.remove();});\r\n      $$('input',tr).forEach(inp=>inp.addEventListener('input',()=>updateRowWh(tr)));\r\n    };\r\n    const updateRowWh = (tr)=>{\r\n      const w=Number($('td:nth-child(2) input',tr).value)||0;\r\n      const h=Number($('td:nth-child(3) input',tr).value)||0;\r\n      $('.wh-cell',tr).textContent=Math.round(w*h);\r\n    };\r\n    $('#rvbatt-add',scope).addEventListener('click',()=>addRow());\r\n    $('#rvbatt-reset',scope).addEventListener('click',()=>{\r\n      rowsTbody.innerHTML='';\r\n      addRow('12V fridge',50,24);\r\n      addRow('LED lights',20,4);\r\n    });\r\n    $('#rvbatt-reset',scope).click();\r\n\r\n    function sumDailyWh(){return $$('#rvbatt-rows tr',scope).reduce((a,tr)=>a+(Number($('.wh-cell',tr).textContent)||0),0);}\r\n    function requiredAh(wh,days,V,f,m){return (wh*days*m)\/(V*f);}\r\n    function groupPick(ah){for(const b of LA_GROUPS){if(ah<=b.maxAh)return b.group;}return null;}\r\n    function formatHours(ah,amps){if(!amps||amps<=0)return '\u2013';const h=(ah\/amps)*1.15;return (h>=24)?(h\/24).toFixed(1)+' days':h.toFixed(1)+' h';}\r\n\r\n    function syncChemUI(){\r\n      const chem=$('input[name=\"rvbatt-chem\"]:checked',scope).value;\r\n      $('#rvbatt-dod-la-wrap',scope).style.display=(chem==='LA')?'':'none';\r\n      $('#rvbatt-dod-li-wrap',scope).style.display=(chem==='LFP')?'':'none';\r\n    }\r\n    $$('input[name=\"rvbatt-chem\"]',scope).forEach(r=>r.addEventListener('change',syncChemUI));\r\n    syncChemUI();\r\n\r\n    function render(){\r\n      const wh=sumDailyWh();\r\n      const V=Number($('#rvbatt-voltage',scope).value)||12;\r\n      const days=Number($('#rvbatt-days',scope).value)||1;\r\n      const margin=Number($('#rvbatt-margin',scope).value)||1.2;\r\n      const chem=$('input[name=\"rvbatt-chem\"]:checked',scope).value;\r\n      const amps=Number($('#rvbatt-charger',scope).value)||30;\r\n      const dod=(chem==='LA')?Number($('#rvbatt-dod-la',scope).value)||0.5:Number($('#rvbatt-dod-li',scope).value)||0.9;\r\n\r\n      const ahReq=requiredAh(wh,days,V,dod,margin);\r\n      const ceilAh=Math.ceil(ahReq);\r\n\r\n      $('#rvbatt-wh',scope).textContent='Daily Load: '+Math.round(wh)+' Wh';\r\n      $('#rvbatt-ah',scope).textContent='Required (Selected): '+ceilAh+' Ah';\r\n      $('#rvbatt-time',scope).textContent='Charge Time: '+formatHours(ahReq,amps);\r\n\r\n      const leadBox=$('#rvbatt-lead-reco',scope);\r\n      const lithBox=$('#rvbatt-lith-reco',scope);\r\n      const seriesNote=(V===24)?' (series\/parallel for 24V)':'';\r\n\r\n      if(chem==='LA'){\r\n        leadBox.style.display='';\r\n        lithBox.style.display='none';\r\n        const group=groupPick(ahReq);\r\n        if(group){\r\n          $('#rvbatt-lead-text',scope).textContent=`Target \u2248 ${ceilAh} Ah. Plan for 1 \u00d7 ${group} deep-cycle battery. If you expect heavier loads or longer autonomy, plan for 2 \u00d7 ${group} in parallel${seriesNote}.`;\r\n        }else{\r\n          const n31=Math.max(2,Math.ceil(ahReq\/LA_TYPS['Group 31']));\r\n          const n27=Math.max(2,Math.ceil(ahReq\/LA_TYPS['Group 27']));\r\n          $('#rvbatt-lead-text',scope).textContent=`Target \u2248 ${ceilAh} Ah. Plan for ${n31} \u00d7 Group 31 deep-cycle batteries in parallel${seriesNote}. If your bay won\u2019t accept Group 31 cases, use ${n27} \u00d7 Group 27 in parallel and adjust hold-downs accordingly.`;\r\n        }\r\n      }else{\r\n        leadBox.style.display='none';\r\n        lithBox.style.display='';\r\n        const modules=Math.max(1,Math.ceil(ahReq\/100));\r\n        const planText=`${modules} \u00d7 12V\/100Ah LiFePO4 module${modules>1?'s':''}${seriesNote}`;\r\n        $('#rvbatt-lith-text',scope).innerHTML=`<strong>Target \u2248 ${ceilAh} Ah usable.<\/strong> <strong>Plan for ${planText}.<\/strong> Choose a BCI case (Group 24\/27\/31) that matches your tray for a drop-in upgrade. If you\u2019d like a tailored setup, contact MANLY Battery\u2019s technical team for a professional recommendation.`;\r\n      }\r\n    }\r\n\r\n    $('#rvbatt-calc-btn',scope).addEventListener('click',render);\r\n    render(); \/\/ initial\r\n  })();\r\n  <\/script>\r\n<\/div>\r\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-cc096fe elementor-widget elementor-widget-heading\" data-id=\"cc096fe\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">How to Use the RV Battery Size Calculator<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-aad4c4d elementor-widget elementor-widget-text-editor\" data-id=\"aad4c4d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Start with real loads, not guesses. List devices (Watts \u00d7 Hours), choose 12V\/24V, set days of autonomy and chemistry. The calculator returns required Ah, a matching battery size by BCI group size, and a charge-time estimate for your charger amps. Confirm tray fit and cable reach before you buy; then decide between lead-acid and Lithium battery options.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1c0987b elementor-widget elementor-widget-heading\" data-id=\"1c0987b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Step 1: Select The Battery Capacity And Unit<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b19f7c2 elementor-widget elementor-widget-text-editor\" data-id=\"b19f7c2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Add each device\u2019s Watts and daily hours. The tool totals Wh\/day, then converts to Ah using your system voltage and usable depth (chemistry). Planning with true loads ensures the battery size matches your camping style.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9080a19 elementor-widget elementor-widget-heading\" data-id=\"9080a19\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Step 2: Enter The Charge Current<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ec67ae2 elementor-widget elementor-widget-text-editor\" data-id=\"ec67ae2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Type your charger\/DC-DC amps. We estimate \u201cHours \u2248 Required Ah \u00f7 Amps \u00d7 1.15.\u201d This ties battery size to your real recharge window, so you don\u2019t undercharge on travel days.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d4cc43a elementor-widget elementor-widget-heading\" data-id=\"d4cc43a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Step 3: Choose Your Battery Type And Charger Brand<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-70cff01 elementor-widget elementor-widget-text-editor\" data-id=\"70cff01\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Pick lead-acid (use ~50% usable) or LiFePO4 (use ~80\u201390% usable). Set your charger brand\/model profile if needed (AGM vs LiFePO4). This keeps the <strong data-start=\"1802\" data-end=\"1818\">battery size<\/strong> recommendation realistic for your hardware.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e25fd19 elementor-widget elementor-widget-heading\" data-id=\"e25fd19\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Why Accurate Charging Time Matters<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6449bc2 elementor-widget elementor-widget-text-editor\" data-id=\"6449bc2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Fast, predictable recharging protects trip plans. A right-sized bank and charger let you top up during short drives or quiet-hour windows. Under-estimating charge time leads to sulfation (lead-acid) or repeated low SOC events; over-estimating inflates battery size and cost without adding usable runtime.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8b4dcb4 elementor-widget elementor-widget-heading\" data-id=\"8b4dcb4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Tips For Charging Lithium Batteries Safely<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-23c0fba elementor-widget elementor-widget-text-editor\" data-id=\"23c0fba\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<ul>\n<li data-start=\"3175\" data-end=\"3246\">Use a LiFePO4 profile (\u224814.2\u201314.6V absorb; \u224813.6V float if required).<\/li>\n<li data-start=\"3249\" data-end=\"3310\">Block charging below 0 \u00b0C\/32 \u00b0F unless your pack is heated.<\/li>\n<li data-start=\"3313\" data-end=\"3386\">Verify charger current vs BMS limit; size cabling\/fusing per ABYC E-13.<\/li>\n<li data-start=\"3389\" data-end=\"3450\">Keep documentation for UN38.3\/UL\/IEC compliance and warranty.<\/li>\n<\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2ff04e6 elementor-widget elementor-widget-heading\" data-id=\"2ff04e6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">MANLY Battery Packs vs Common RV Batteries<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-73fc2f4 elementor-widget elementor-widget-text-editor\" data-id=\"73fc2f4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>when you choose an RV battery, start with the correct battery size (BCI case that actually fits your tray), then pick chemistry and capacity for your travel style. The tables below map standard BCI envelopes to real MANLY dimensions and compare pros\/cons so you can plan a confident battery upgrade.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b7e7e4a elementor-widget elementor-widget-image\" data-id=\"b7e7e4a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/manlybattery.com\/battery-shop\/\" target=\"_blank\">\n\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1536\" height=\"461\" src=\"https:\/\/manlybattery-static-cdn.cimen.club\/manlybattery\/wp-content\/uploads\/2025\/09\/Manly-battery-features-best-battery-manufacturer-1536x461.webp\" class=\"attachment-1536x1536 size-1536x1536 wp-image-29606\" alt=\"Manly Battery Features Best Battery Manufacturer\" srcset=\"https:\/\/manlybattery-static-cdn.cimen.club\/manlybattery\/wp-content\/uploads\/2025\/09\/Manly-battery-features-best-battery-manufacturer-1536x461.webp 1536w, https:\/\/manlybattery-static-cdn.cimen.club\/manlybattery\/wp-content\/uploads\/2025\/09\/Manly-battery-features-best-battery-manufacturer-300x90.webp 300w, https:\/\/manlybattery-static-cdn.cimen.club\/manlybattery\/wp-content\/uploads\/2025\/09\/Manly-battery-features-best-battery-manufacturer-1030x309.webp 1030w, https:\/\/manlybattery-static-cdn.cimen.club\/manlybattery\/wp-content\/uploads\/2025\/09\/Manly-battery-features-best-battery-manufacturer-768x230.webp 768w, https:\/\/manlybattery-static-cdn.cimen.club\/manlybattery\/wp-content\/uploads\/2025\/09\/Manly-battery-features-best-battery-manufacturer-18x5.webp 18w, https:\/\/manlybattery-static-cdn.cimen.club\/manlybattery\/wp-content\/uploads\/2025\/09\/Manly-battery-features-best-battery-manufacturer-600x180.webp 600w, https:\/\/manlybattery-static-cdn.cimen.club\/manlybattery\/wp-content\/uploads\/2025\/09\/Manly-battery-features-best-battery-manufacturer.webp 2000w\" sizes=\"(max-width: 1536px) 100vw, 1536px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7edd187 elementor-widget elementor-widget-heading\" data-id=\"7edd187\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">BCI Group Size &amp; Actual MANLY Battery Size Fit (L \u00d7 W \u00d7 H)<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ea1486b elementor-widget elementor-widget-text-editor\" data-id=\"ea1486b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"556\" data-end=\"819\">BCI group size is a physical standard from Battery Council International\u2014it defines the case footprint and terminal layout so a replacement drops into your existing tray. Match the BCI number first, and you\u2019ll avoid re-fabricating hold-downs or stretching cables.<\/p>\n<ul data-start=\"821\" data-end=\"1399\">\n<li data-start=\"821\" data-end=\"1043\">\n<p data-start=\"823\" data-end=\"1043\"><strong data-start=\"823\" data-end=\"857\">Group 24 (Standard vs. MANLY):<\/strong> The standard envelope is 10.25 \u00d7 6.81 \u00d7 8.88 in (260 \u00d7 173 \u00d7 225 mm). The MANLY group 24 lithium battery measures 10.24 \u00d7 6.61 \u00d7 8.46 in (260 \u00d7 168 \u00d7 215 mm), slightly narrower\/shorter for easy fit.<\/p>\n<\/li>\n<li data-start=\"1044\" data-end=\"1223\">\n<p data-start=\"1046\" data-end=\"1223\"><strong data-start=\"1046\" data-end=\"1059\">Group 27:<\/strong> Standard is 12.06 \u00d7 6.81 \u00d7 8.88 in (306 \u00d7 173 \u00d7 225 mm). The MANLY group 27 lithium battery at 12.05 \u00d7 6.81 \u00d7 8.86 in (306 \u00d7 173 \u00d7 225 mm) is a true drop-in for most G27 trays.<\/p>\n<\/li>\n<li data-start=\"1224\" data-end=\"1399\">\n<p data-start=\"1226\" data-end=\"1399\"><strong data-start=\"1226\" data-end=\"1239\">Group 31:<\/strong> Standard is 13.00 \u00d7 6.81 \u00d7 9.44 in (330 \u00d7 173 \u00d7 240 mm). The MANLY group 37 lithium battery is 12.99 \u00d7 6.81 \u00d7 9.45 in (330 \u00d7 173 \u00d7 240 mm), matching typical G31 compartments.<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"1401\" data-end=\"1681\"><strong data-start=\"1401\" data-end=\"1425\">Quick fit checklist:<\/strong> confirm tray clearance in all three axes, post orientation, hold-down height, and cable bend radius. If your compartment won\u2019t accept a larger case, a MANLY LiFePO4 in a smaller BCI footprint can still deliver higher usable energy.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3841bef elementor-widget elementor-widget-text-editor\" data-id=\"3841bef\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<!-- Responsive wrapper (only affects this table) -->\n<div class=\"rvb-table1-wrap\"><style>\n    \/* Scope styles to this table only *\/\n    .rvb-table1-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:12px 0}\n    .rvb-table1-wrap table{min-width:700px;border-collapse:separate;border-spacing:0;border:1px solid #e5e7eb;border-radius:10px;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;font-size:14px;line-height:1.5;width:100%}\n    .rvb-table1-wrap thead tr{background:#f9fafb}\n    .rvb-table1-wrap th,.rvb-table1-wrap td{padding:10px;border-bottom:1px solid #e5e7eb;text-align:left}\n    .rvb-table1-wrap th:first-child,.rvb-table1-wrap td:first-child{white-space:nowrap}\n    \/* Optional: nicer scrollbar on mobile *\/\n    .rvb-table1-wrap::-webkit-scrollbar{height:8px}\n    .rvb-table1-wrap::-webkit-scrollbar-thumb{background:#cbd5e1;border-radius:8px}\n    .rvb-table1-wrap::-webkit-scrollbar-track{background:#f1f5f9}\n  <\/style>\n<table><caption style=\"caption-side: top; text-align: left; padding: 10px 12px; font-weight: bold;\">\n<h3 style=\"margin: 0;\">BCI Group Size vs Actual MANLY Size (L \u00d7 W \u00d7 H)<\/h3>\n<\/caption>\n<thead>\n<tr>\n<th>BCI Group #<\/th>\n<th>Standard Envelope (in)<\/th>\n<th>Standard Envelope (mm)<\/th>\n<th>Actual MANLY Size (in)<\/th>\n<th>Actual MANLY Size (mm)<\/th>\n<\/tr>\n<\/thead>\n<tbody><!-- Group 24 -->\n<tr>\n<td>24<\/td>\n<td>10.25 \u00d7 6.81 \u00d7 8.88<\/td>\n<td>260 \u00d7 173 \u00d7 225<\/td>\n<td>10.24 \u00d7 6.61 \u00d7 8.46<\/td>\n<td>260 \u00d7 168 \u00d7 215<\/td>\n<\/tr>\n<!-- Group 27 -->\n<tr>\n<td>27<\/td>\n<td>12.06 \u00d7 6.81 \u00d7 8.88<\/td>\n<td>306 \u00d7 173 \u00d7 225<\/td>\n<td>12.05 \u00d7 6.81 \u00d7 8.86<\/td>\n<td>306 \u00d7 173 \u00d7 225<\/td>\n<\/tr>\n<!-- Group 31 -->\n<tr>\n<td>31<\/td>\n<td>13.00 \u00d7 6.81 \u00d7 9.44<\/td>\n<td>330 \u00d7 173 \u00d7 240<\/td>\n<td>12.99 \u00d7 6.81 \u00d7 9.45<\/td>\n<td>330 \u00d7 173 \u00d7 240<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f04bd9c elementor-widget elementor-widget-heading\" data-id=\"f04bd9c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Pros &amp; Cons: Lithium Battery Replacement vs Lead-Acid (For an RV Battery Upgrade)<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-df7ec6a elementor-widget elementor-widget-text-editor\" data-id=\"df7ec6a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"1861\" data-end=\"2006\">If you camp off-grid, a lithium battery replacement in a matching BCI case gives more usable energy with far less weight and faster charging.<\/p>\n<ul data-start=\"2008\" data-end=\"2633\">\n<li data-start=\"2008\" data-end=\"2182\">\n<p data-start=\"2010\" data-end=\"2182\"><strong data-start=\"2010\" data-end=\"2038\">Usable energy &amp; runtime:<\/strong> LiFePO4 plans at ~80\u201390% usable capacity; flooded\/AGM plans at ~50% to protect cycle life. Same label Ah, more real-world hours with lithium.<\/p>\n<\/li>\n<li data-start=\"2183\" data-end=\"2334\">\n<p data-start=\"2185\" data-end=\"2334\"><strong data-start=\"2185\" data-end=\"2209\">Weight &amp; efficiency:<\/strong> LiFePO4 packs are much lighter and ~95% efficient in\/out; lead-acid is heavier and ~70% efficient with long absorb stages.<\/p>\n<\/li>\n<li data-start=\"2335\" data-end=\"2503\">\n<p data-start=\"2337\" data-end=\"2503\"><strong data-start=\"2337\" data-end=\"2363\">Cold-weather &amp; safety:<\/strong> Quality lithium packs include low-temp charge protection; look for UN38.3 transport testing and IEC 62133\/UL listings on the exact model.<\/p>\n<\/li>\n<li data-start=\"2504\" data-end=\"2633\">\n<p data-start=\"2506\" data-end=\"2633\"><strong data-start=\"2506\" data-end=\"2531\">Longevity &amp; warranty:<\/strong> LiFePO4 offers multi-thousand cycles and long warranties; lead-acid needs more frequent replacements.<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"2635\" data-end=\"2942\">When the battery size result from the calculator exceeds typical Group 31 capacity, plan multiple BCI-matched modules in parallel or step to a 24V bank with an appropriate inverter\/charger. If you want a tailored spec, reach out\u2014<strong><a href=\"https:\/\/manlybattery.com\/contact-us\/\">MANLY\u2019s engineering team<\/a><\/strong> can map case, capacity, and wiring to your coach.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bae7142 elementor-widget elementor-widget-text-editor\" data-id=\"bae7142\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<!-- Responsive wrapper (only affects this table) -->\n<div class=\"rvb-table2-wrap\"><style>\n    \/* Scope styles to this table only *\/\n    .rvb-table2-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:12px 0}\n    .rvb-table2-wrap table{min-width:780px;border-collapse:separate;border-spacing:0;border:1px solid #e5e7eb;border-radius:10px;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;font-size:14px;line-height:1.5;width:100%}\n    .rvb-table2-wrap thead tr{background:#f9fafb}\n    .rvb-table2-wrap th,.rvb-table2-wrap td{padding:10px;border-bottom:1px solid #e5e7eb;text-align:left}\n    .rvb-table2-wrap th:first-child,.rvb-table2-wrap td:first-child{white-space:nowrap}\n    \/* Optional: nicer scrollbar on mobile *\/\n    .rvb-table2-wrap::-webkit-scrollbar{height:8px}\n    .rvb-table2-wrap::-webkit-scrollbar-thumb{background:#cbd5e1;border-radius:8px}\n    .rvb-table2-wrap::-webkit-scrollbar-track{background:#f1f5f9}\n  <\/style>\n<table><caption style=\"caption-side: top; text-align: left; padding: 10px 12px; font-weight: bold;\">\n<h3 style=\"margin: 0;\">MANLY LiFePO4 vs Generic LiFePO4 vs Lead-acid (Flooded\/AGM)<\/h3>\n<\/caption>\n<thead>\n<tr>\n<th>Criteria<\/th>\n<th>MANLY LiFePO4 (Drop-in)<\/th>\n<th>Generic LiFePO4<\/th>\n<th>Lead-acid (Flooded\/AGM)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>BCI Group Fit (24\/27\/31)<\/td>\n<td>Case-true footprints; easy tray drop-in; custom harness available<\/td>\n<td>Often fits, but case\/terminal variations are common<\/td>\n<td>Native sizes; heavy and bulky<\/td>\n<\/tr>\n<tr>\n<td>Usable Energy (planning DoD)<\/td>\n<td>\u224880\u201390% usable; flat voltage curve<\/td>\n<td>\u224880\u201390% usable; BMS quality varies<\/td>\n<td>\u224850% usable for longevity<\/td>\n<\/tr>\n<tr>\n<td>Weight &amp; Space Efficiency<\/td>\n<td>Much lighter; higher Wh per pound<\/td>\n<td>Lightweight; depends on brand<\/td>\n<td>Heaviest; stresses slides\/trays<\/td>\n<\/tr>\n<tr>\n<td>Charge Speed &amp; Efficiency<\/td>\n<td>High acceptance; ~95% efficient; great for solar\/DC-DC<\/td>\n<td>Good acceptance; efficiency varies<\/td>\n<td>~70% efficient; long absorb stage<\/td>\n<\/tr>\n<tr>\n<td>Low-Temp &amp; Safety Compliance<\/td>\n<td>BMS low-temp protection \/ optional self-heating; UN38.3, IEC 62133, UL, CE<\/td>\n<td>BMS present; certifications differ by maker<\/td>\n<td>Needs venting; acid spill risk; more maintenance<\/td>\n<\/tr>\n<tr>\n<td>Cycle Life &amp; Warranty<\/td>\n<td>Long cycle life; warranty up to 10 years<\/td>\n<td>Mid-to-high; 2\u20135 year warranties common<\/td>\n<td>Shortest life; frequent replacements<\/td>\n<\/tr>\n<tr>\n<td>Customization &amp; Integration<\/td>\n<td>Voltage\/capacity\/case\/harness customization; optional Bluetooth<\/td>\n<td>Limited customization across lines<\/td>\n<td>Minimal customization; external monitors<\/td>\n<\/tr>\n<tr>\n<td>Best-Fit Use Cases<\/td>\n<td>Drop-in battery upgrade, off-grid stays, weight-sensitive builds<\/td>\n<td>General RV upgrade with flexible budget<\/td>\n<td>Entry\/short-term use where cost is the main driver<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1320527 elementor-widget elementor-widget-heading\" data-id=\"1320527\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">How To Calculate Battery Size &amp; Pick a BCI Group Size<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bcad583 elementor-widget elementor-widget-text-editor\" data-id=\"bcad583\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"3121\" data-end=\"3230\">You\u2019ll get the best outcome when you calculate battery size by loads first, then map to a case that fits.<\/p>\n<ol data-start=\"3232\" data-end=\"3664\">\n<li data-start=\"3232\" data-end=\"3313\">\n<p data-start=\"3235\" data-end=\"3313\"><strong data-start=\"3235\" data-end=\"3256\">List daily loads:<\/strong> appliances, DC amps, inverter AC watts, and run-hours.<\/p>\n<\/li>\n<li data-start=\"3314\" data-end=\"3389\">\n<p data-start=\"3317\" data-end=\"3389\"><strong data-start=\"3317\" data-end=\"3340\">Compute watt-hours:<\/strong> sum (amps \u00d7 volts \u00d7 hours) or (watts \u00d7 hours).<\/p>\n<\/li>\n<li data-start=\"3390\" data-end=\"3472\">\n<p data-start=\"3393\" data-end=\"3472\"><strong data-start=\"3393\" data-end=\"3414\">Choose chemistry:<\/strong> plan ~50% usable for lead-acid vs. ~80\u201390% for LiFePO4.<\/p>\n<\/li>\n<li data-start=\"3473\" data-end=\"3546\">\n<p data-start=\"3476\" data-end=\"3546\"><strong data-start=\"3476\" data-end=\"3501\">Convert to amp-hours:<\/strong> <code data-start=\"3502\" data-end=\"3543\">Ah = (daily Wh \u00f7 12V) \u00f7 usable fraction<\/code>.<\/p>\n<\/li>\n<li data-start=\"3547\" data-end=\"3664\">\n<p data-start=\"3550\" data-end=\"3664\"><strong data-start=\"3550\" data-end=\"3568\">Pick the case:<\/strong> match the target Ah to a BCI group (24\/27\/31) that fits your tray; scale in parallel if needed.<\/p>\n<\/li>\n<\/ol>\n<p data-start=\"3666\" data-end=\"4020\">Example: if your daily total is 1,800 Wh, a LiFePO4 plan uses <code data-start=\"3728\" data-end=\"3756\">1,800 \u00f7 12 \u00f7 0.85 \u2248 176 Ah<\/code>. That\u2019s one MANLY G31-footprint 150Ah plus solar\/DC-DC support, or two G24\/G27 modules in parallel depending on space. The battery size calculator will do this math and output a practical case recommendation with charge-time estimates.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-822b317 e-flex e-con-boxed e-con e-parent\" data-id=\"822b317\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7b33329 elementor-widget elementor-widget-shortcode\" data-id=\"7b33329\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"shortcode.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-shortcode\">\t\t\t\t\t<div class=\"astra-advanced-hook-23721 \">\n\t\t\t\t\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"23721\" class=\"elementor elementor-23721\" data-elementor-post-type=\"astra-advanced-hook\">\n\t\t\t\t<div class=\"elementor-element elementor-element-04bc954 e-flex e-con-boxed e-con e-parent\" data-id=\"04bc954\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7f3ae6c elementor-widget elementor-widget-text-editor\" data-id=\"7f3ae6c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>Contact Us<\/h2><p>To receive your email faster, please copy <span style=\"color: #f66a38;\"><strong>info@manlybattery.com<\/strong> <\/span>and send your email directly, or fill out the form below.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-79d2220 elementor-mobile-button-align-stretch elementor-button-align-stretch elementor-widget elementor-widget-form\" data-id=\"79d2220\" data-element_type=\"widget\" data-e-type=\"widget\" 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elementor-field-group elementor-column elementor-field-group-field_e48e53c elementor-col-100 elementor-field-required\">\n\t\t\t\t\t\t\t\t\t\t\t\t<label for=\"form-field-field_e48e53c\" class=\"elementor-field-label elementor-screen-only\">\n\t\t\t\t\t\t\t\tSubject*\t\t\t\t\t\t\t<\/label>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<input size=\"1\" type=\"text\" name=\"form_fields[field_e48e53c]\" id=\"form-field-field_e48e53c\" class=\"elementor-field elementor-size-sm  elementor-field-textual\" placeholder=\"Your Subject*\" required=\"required\">\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-textarea elementor-field-group elementor-column elementor-field-group-message elementor-col-100 elementor-field-required\">\n\t\t\t\t\t\t\t\t\t\t\t\t<label for=\"form-field-message\" class=\"elementor-field-label elementor-screen-only\">\n\t\t\t\t\t\t\t\tMessage\t\t\t\t\t\t\t<\/label>\n\t\t\t\t\t\t<textarea class=\"elementor-field-textual elementor-field  elementor-size-sm\" name=\"form_fields[message]\" id=\"form-field-message\" rows=\"5\" placeholder=\"Your Message *\" required=\"required\"><\/textarea>\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-group elementor-column elementor-field-type-submit elementor-col-100 e-form__buttons\">\n\t\t\t\t\t<button class=\"elementor-button elementor-size-sm\" type=\"submit\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Submit<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/button>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/form>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5e34013 elementor-widget elementor-widget-heading\" data-id=\"5e34013\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">FAQ<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-67c1d95 elementor-widget elementor-widget-heading\" data-id=\"67c1d95\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">How do I calculate battery backup size?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b7e51b2 elementor-widget elementor-widget-text-editor\" data-id=\"b7e51b2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Start with daily energy use in watt-hours, then convert to amp-hours and add realistic buffers. Multiply each device\u2019s watts by hours per day to get Wh; sum them, multiply by days of autonomy, and add a 10\u201330% safety margin. Convert to amp-hours with your system voltage and usable depth (\u224850% for lead-acid; \u224880\u201390% for LiFePO4) to size the bank you actually need.<br data-start=\"409\" data-end=\"412\" \/><strong data-start=\"412\" data-end=\"424\">Formula:<\/strong> <code data-start=\"425\" data-end=\"499\">Ah = (Total Wh \u00d7 Days \u00d7 (1 + Margin)) \u00f7 (System Volts \u00d7 Usable Fraction)<\/code><br data-start=\"499\" data-end=\"502\" \/><strong data-start=\"502\" data-end=\"514\" data-is-only-node=\"\">Example:<\/strong> 1,200 Wh\/day \u00d7 1.2 margin \u00f7 (12 V \u00d7 0.85 LiFePO4) \u2248 118 Ah target.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1141731 elementor-widget elementor-widget-heading\" data-id=\"1141731\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">What does group size mean on a battery?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-985a76c elementor-widget elementor-widget-text-editor\" data-id=\"985a76c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>\u201cGroup size\u201d is a BCI (Battery Council International) standard that defines a battery\u2019s external case dimensions and terminal layout, so the battery physically fits your tray and cables. It does not specify chemistry or capacity. Common RV sizes include Group 24 (~10.25\u2033\u00d76.81\u2033\u00d78.88\u2033), Group 27 (~12.06\u2033\u00d76.81\u2033\u00d78.88\u2033), and Group 31 (~13.00\u2033\u00d76.81\u2033\u00d79.44\u2033); always verify your compartment\u2019s length, width, height, hold-down, and post orientation before buying.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>RV Battery Size &amp; BCI Group Size Calculator Enter your daily loads and this battery size calculator returns the required 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