{"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":"calculadora-de-amperes-hora-de-bateria","status":"publish","type":"page","link":"https:\/\/cnbatteries.com\/pt\/battery-amp-hour-calculator\/","title":{"rendered":"Calculadora de horas AMP da bateria"},"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;\">Calculadora de amperes-hora (Ah) da bateria<\/h2>\n  \n  <p style=\"text-align:center; color:#555; font-size:0.95rem; margin-bottom:2rem;\">\n    Calcular o seu <a href=\"https:\/\/cnbatteries.com\/pt\/produtos\/\" data-internallinksmanager029f6b8e52c=\"2\" title=\"produtos\">bateria<\/a> capacidade facilmente. Introduza a tens\u00e3o, a corrente, a pot\u00eancia e o tempo de utiliza\u00e7\u00e3o. F\u00f3rmulas:<br>\n    <strong>Ah = Corrente (A) \u00d7 Tempo (h)<\/strong> ou <strong>Ah = Pot\u00eancia (W) \u00d7 Tempo (h) \u00f7 Tens\u00e3o (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>Tens\u00e3o (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>Corrente (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>Pot\u00eancia (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>Tempo de utiliza\u00e7\u00e3o (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>Efici\u00eancia (%) opcional<\/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      Calcular 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>Como funciona:<\/strong><\/p>\n    <ul style=\"padding-left:1.2rem;\">\n      <li>Se souberes a corrente (A) e o tempo (h): <code>Ah = Corrente \u00d7 Tempo<\/code><\/li>\n      <li>Se conheceres a pot\u00eancia (W) e a tens\u00e3o (V): <code>Ah = Pot\u00eancia \u00d7 Tempo \u00f7 Tens\u00e3o<\/code><\/li>\n      <li>Ajustar a efici\u00eancia para estimar a capacidade real utiliz\u00e1vel.<\/li>\n      <li>Convers\u00e3o de unidades: 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\">Calculadora de amperes-hora (Ah) da bateria<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Calcule facilmente a amp\u00e8re-hora (Ah) da sua bateria. Introduza a tens\u00e3o, a corrente, a pot\u00eancia e o tempo de utiliza\u00e7\u00e3o para obter resultados exactos. Ajuste a efici\u00eancia para obter estimativas realistas.<br>F\u00f3rmulas: Ah = Corrente \u00d7 Tempo OU Ah = Pot\u00eancia \u00d7 Tempo \u00f7 Tens\u00e3o<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Como utilizar<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Se souberes a corrente (A) e o tempo (h), utiliza: Ah = Corrente \u00d7 Tempo<\/li>\n\n\n\n<li>Se conhece a pot\u00eancia (W) e a tens\u00e3o (V), utilize: Ah = Pot\u00eancia \u00d7 Tempo \u00f7 Tens\u00e3o<\/li>\n\n\n\n<li>A efici\u00eancia (%) pode ser introduzida para estimar a capacidade real utiliz\u00e1vel.<\/li>\n\n\n\n<li>O resultado \u00e9 automaticamente apresentado em Ah e mAh.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1lculos de exemplo<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/cnbatteries.com\/pt\/produtos\/\" data-internallinksmanager029f6b8e52c=\"1\" title=\"bateria de chumbo-\u00e1cido\">12V<\/a> bateria, 5A, 3 horas \u2192 15 Ah (15.000 mAh)<\/li>\n\n\n\n<li>Aparelho de 60W, bateria de 12V, 3 horas \u2192 15 Ah (15.000 mAh)<\/li>\n\n\n\n<li>Efici\u00eancia 90% aplicada \u2192 13,5 Ah de capacidade \u00fatil<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Dicas e conhecimentos sobre baterias<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Na liga\u00e7\u00e3o em s\u00e9rie, as tens\u00f5es aumentam, Ah permanece igual.<\/li>\n\n\n\n<li>Na liga\u00e7\u00e3o em paralelo, o Ah aumenta, a tens\u00e3o mant\u00e9m-se igual.<\/li>\n\n\n\n<li>Os diferentes tipos de bateria (i\u00f5es de l\u00edtio, \u00e1cido de chumbo, NiMH) t\u00eam diferentes efici\u00eancias e taxas de auto-descarga.<\/li>\n\n\n\n<li>Tenha sempre em conta os efeitos da temperatura na capacidade da bateria.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Perguntas mais frequentes<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Como \u00e9 que calculo as horas-ampere da bateria (Ah)?<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Pode calcular Ah usando Corrente \u00d7 Tempo (Ah = A \u00d7 h) se souber a corrente, ou Pot\u00eancia \u00d7 Tempo \u00f7 Tens\u00e3o (Ah = W \u00d7 h \u00f7 V) se souber a pot\u00eancia e a tens\u00e3o.<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Posso calcular o Ah utilizando apenas a pot\u00eancia da bateria?<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Sim, se conhecer a pot\u00eancia da bateria em watts e a sua tens\u00e3o, Ah = Pot\u00eancia \u00d7 Tempo \u00f7 Tens\u00e3o.<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li>A calculadora tem em conta a efici\u00eancia da bateria?<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Sim, introduza uma percentagem de efici\u00eancia para estimar a capacidade real utiliz\u00e1vel.<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Posso ver o resultado em mAh?<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Sim, os resultados s\u00e3o convertidos automaticamente: 1 Ah = 1000 mAh.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Consulte o nosso <a href=\"https:\/\/cnbatteries.com\/pt\/produtos\/\">produtos para pilhas<\/a> e outras calculadoras para encontrar a solu\u00e7\u00e3o certa para as suas necessidades.<\/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\/pt\/wp-json\/wp\/v2\/pages\/672","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cnbatteries.com\/pt\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/cnbatteries.com\/pt\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/cnbatteries.com\/pt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cnbatteries.com\/pt\/wp-json\/wp\/v2\/comments?post=672"}],"version-history":[{"count":7,"href":"https:\/\/cnbatteries.com\/pt\/wp-json\/wp\/v2\/pages\/672\/revisions"}],"predecessor-version":[{"id":688,"href":"https:\/\/cnbatteries.com\/pt\/wp-json\/wp\/v2\/pages\/672\/revisions\/688"}],"wp:attachment":[{"href":"https:\/\/cnbatteries.com\/pt\/wp-json\/wp\/v2\/media?parent=672"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}