{"id":672,"date":"2026-01-09T11:04:45","date_gmt":"2026-01-09T11:04:45","guid":{"rendered":"https:\/\/cnbatteries.com\/?page_id=672"},"modified":"2026-01-09T11:27:12","modified_gmt":"2026-01-09T11:27:12","slug":"battery-amp-hour-calculator","status":"publish","type":"page","link":"https:\/\/cnbatteries.com\/es\/battery-amp-hour-calculator\/","title":{"rendered":"Calculadora de AMP hora de bater\u00eda"},"content":{"rendered":"<!-- ================= Battery Amp Hour Calculator (WordPress Compatible) ================= -->\n<section class=\"amp-hour-calculator\" style=\"max-width:700px; margin:auto; padding:2rem; font-family:Arial, sans-serif; background:#f9f9f9; border-radius:12px; box-shadow:0 4px 12px rgba(0,0,0,0.1);\">\n  <h2 style=\"text-align:center; color:#1a73e8; margin-bottom:1rem;\">Battery Amp-Hour (Ah) Calculator<\/h2>\n  \n  <p style=\"text-align:center; color:#555; font-size:0.95rem; margin-bottom:2rem;\">\n    Calculate your <a href=\"https:\/\/cnbatteries.com\/es\/productos\/\" data-internallinksmanager029f6b8e52c=\"2\" title=\"productos\">bater\u00eda<\/a> capacity easily. Enter voltage, current, power, and usage time. Formulas:<br>\n    <strong>Ah = Current (A) \u00d7 Time (h)<\/strong> o <strong>Ah = Power (W) \u00d7 Time (h) \u00f7 Voltage (V)<\/strong>\n  <\/p>\n\n  <div style=\"display:flex; flex-direction:column; gap:1rem;\">\n    <div style=\"display:flex; gap:1rem; flex-wrap:wrap;\">\n      <div style=\"flex:1; min-width:120px;\">\n        <label>Voltage (V)<\/label>\n        <input type=\"number\" class=\"ah-voltage\" placeholder=\"12\" style=\"width:100%; padding:0.5rem; border-radius:6px; border:1px solid #ccc;\">\n      <\/div>\n      <div style=\"flex:1; min-width:120px;\">\n        <label>Current (A)<\/label>\n        <input type=\"number\" class=\"ah-current\" placeholder=\"5\" style=\"width:100%; padding:0.5rem; border-radius:6px; border:1px solid #ccc;\">\n      <\/div>\n      <div style=\"flex:1; min-width:120px;\">\n        <label>Power (W)<\/label>\n        <input type=\"number\" class=\"ah-power\" placeholder=\"60\" style=\"width:100%; padding:0.5rem; border-radius:6px; border:1px solid #ccc;\">\n      <\/div>\n      <div style=\"flex:1; min-width:120px;\">\n        <label>Usage Time (h)<\/label>\n        <input type=\"number\" class=\"ah-time\" placeholder=\"3\" style=\"width:100%; padding:0.5rem; border-radius:6px; border:1px solid #ccc;\">\n      <\/div>\n    <\/div>\n\n    <div>\n      <label>Efficiency (%) optional<\/label>\n      <input type=\"number\" class=\"ah-efficiency\" placeholder=\"90\" style=\"width:100px; padding:0.5rem; border-radius:6px; border:1px solid #ccc;\">\n    <\/div>\n\n    <button class=\"ah-calc-btn\" style=\"background:#1a73e8; color:white; padding:0.75rem; border:none; border-radius:8px; font-size:1rem; cursor:pointer;\">\n      Calculate Ah\n    <\/button>\n  <\/div>\n\n  <div class=\"ah-result\" style=\"margin-top:2rem; text-align:center; font-size:1.1rem; color:#333;\"><\/div>\n\n  <div style=\"margin-top:1.5rem; font-size:0.9rem; color:#555; line-height:1.5;\">\n    <p><strong>How it works:<\/strong><\/p>\n    <ul style=\"padding-left:1.2rem;\">\n      <li>If you know current (A) and time (h): <code>Ah = Current \u00d7 Time<\/code><\/li>\n      <li>If you know power (W) and voltage (V): <code>Ah = Power \u00d7 Time \u00f7 Voltage<\/code><\/li>\n      <li>Adjust efficiency to estimate real usable capacity.<\/li>\n      <li>Unit conversion: 1 Ah = 1000 mAh<\/li>\n    <\/ul>\n  <\/div>\n<\/section>\n\n<script>\n(function(){\n  \/\/ Select elements within this calculator only\n  const section = document.querySelector('.amp-hour-calculator');\n  const btn = section.querySelector('.ah-calc-btn');\n  const resultDiv = section.querySelector('.ah-result');\n\n  btn.addEventListener('click', function(){\n    const voltage = parseFloat(section.querySelector('.ah-voltage').value);\n    const current = parseFloat(section.querySelector('.ah-current').value);\n    const power = parseFloat(section.querySelector('.ah-power').value);\n    const time = parseFloat(section.querySelector('.ah-time').value);\n    const efficiency = parseFloat(section.querySelector('.ah-efficiency').value) || 100;\n\n    \/\/ Validation\n    if (!time || ( !current && !(power && voltage) )) {\n      resultDiv.innerHTML = '<span style=\"color:red;\">Please enter valid numbers for Time and either Current or both Power and Voltage.<\/span>';\n      return;\n    }\n\n    let ah, method = '';\n    if (current && current > 0) {\n      ah = current * time;\n      method = 'Using Current \u00d7 Time';\n    } else if (power && voltage && power > 0 && voltage > 0) {\n      ah = (power * time) \/ voltage;\n      method = 'Using Power \u00d7 Time \u00f7 Voltage';\n    } else {\n      resultDiv.innerHTML = '<span style=\"color:red;\">Invalid input. Check your values.<\/span>';\n      return;\n    }\n\n    ah = ah * (efficiency\/100);\n\n    resultDiv.innerHTML = `\n      <p><strong>Calculated Battery Capacity:<\/strong><\/p>\n      <p style=\"font-size:1.3rem; color:#1a73e8;\">${ah.toFixed(2)} Ah (${(ah*1000).toFixed(0)} mAh)<\/p>\n      <p style=\"font-size:0.9rem; color:#555;\">${method}, Efficiency applied: ${efficiency}%<\/p>\n    `;\n  });\n})();\n<\/script>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<h2 class=\"wp-block-heading\">Battery Amp-Hour (Ah) Calculator<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Easily calculate the amp-hour (Ah) of your battery. Enter voltage, current, power, and usage time to get accurate results. Adjust efficiency for realistic estimates.<br>Formulas: Ah = Current \u00d7 Time OR Ah = Power \u00d7 Time \u00f7 Voltage<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">How to Use<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>If you know current (A) and time (h), use: Ah = Current \u00d7 Time<\/li>\n\n\n\n<li>If you know power (W) and voltage (V), use: Ah = Power \u00d7 Time \u00f7 Voltage<\/li>\n\n\n\n<li>Efficiency (%) can be entered to estimate real usable capacity.<\/li>\n\n\n\n<li>Result is automatically displayed in Ah and mAh.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Example Calculations<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/cnbatteries.com\/es\/productos\/\" data-internallinksmanager029f6b8e52c=\"1\" title=\"bater\u00eda de plomo-\u00e1cido\">12V<\/a> battery, 5A, 3 hours \u2192 15 Ah (15,000 mAh)<\/li>\n\n\n\n<li>60W device, 12V battery, 3 hours \u2192 15 Ah (15,000 mAh)<\/li>\n\n\n\n<li>Efficiency 90% applied \u2192 13.5 Ah usable capacity<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Battery Tips &amp; Knowledge<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>In series connection, voltages add, Ah stays the same.<\/li>\n\n\n\n<li>In parallel connection, Ah adds, voltage stays the same.<\/li>\n\n\n\n<li>Different battery types (Li-ion, Lead Acid, NiMH) have different efficiencies and self-discharge rates.<\/li>\n\n\n\n<li>Always consider temperature effects on battery capacity.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Frequently Asked Questions<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li>How do I calculate battery amp hours (Ah)?<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>You can calculate Ah using Current \u00d7 Time (Ah = A \u00d7 h) if you know the current, or Power \u00d7 Time \u00f7 Voltage (Ah = W \u00d7 h \u00f7 V) if you know power and voltage.<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Can I calculate Ah using only the battery power?<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Yes, if you know the battery&#8217;s power in watts and its voltage, Ah = Power \u00d7 Time \u00f7 Voltage.<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Does the calculator consider battery efficiency?<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Yes, enter an efficiency percentage to estimate real usable capacity.<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Can I see the result in mAh?<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Yes, results are automatically converted: 1 Ah = 1000 mAh.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Check out our <a href=\"https:\/\/cnbatteries.com\/es\/productos\/\">battery products<\/a> and other calculators to find the right solution for your needs.<\/p>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Battery Amp-Hour (Ah) Calculator Calculate your battery capacity easily. Enter voltage, current, power, and usage time. Formulas: Ah = Current (A) \u00d7 Time (h) or Ah = Power (W) \u00d7 Time (h) \u00f7 Voltage (V) Voltage (V) Current (A) Power (W) Usage Time (h) Efficiency (%) optional Calculate Ah How it works: If you know&#8230;<\/p>","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_kad_post_transparent":"default","_kad_post_title":"default","_kad_post_layout":"default","_kad_post_sidebar_id":"","_kad_post_content_style":"default","_kad_post_vertical_padding":"default","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"class_list":["post-672","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/cnbatteries.com\/es\/wp-json\/wp\/v2\/pages\/672","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cnbatteries.com\/es\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/cnbatteries.com\/es\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/cnbatteries.com\/es\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cnbatteries.com\/es\/wp-json\/wp\/v2\/comments?post=672"}],"version-history":[{"count":7,"href":"https:\/\/cnbatteries.com\/es\/wp-json\/wp\/v2\/pages\/672\/revisions"}],"predecessor-version":[{"id":688,"href":"https:\/\/cnbatteries.com\/es\/wp-json\/wp\/v2\/pages\/672\/revisions\/688"}],"wp:attachment":[{"href":"https:\/\/cnbatteries.com\/es\/wp-json\/wp\/v2\/media?parent=672"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}