Battery Capacity Calculator
Oct 13, 2023
v.0
A calculator for determining needed battery capacity from a selection of appliances. Calculator Battery Capacity

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2. Paste the code into your website.
3. Resize the iframe to fit your website.

Javascript, HTML, CSS Code

                
<!DOCTYPE html>
<html>
<head>
<script type="text/javascript"> window.addEventListener('error', function(event) { var message = JSON.parse(JSON.stringify(event.message)); var source = event.filename; var lineno = event.lineno; var colno = event.colno; var error = event.error; window.parent.postMessage({ type: 'iframeError', details: { message: message, source: source, lineno: lineno, colno: colno, error: error ? error.stack : '' } }, '*'); }); window.addEventListener('unhandledrejection', function(event) { window.parent.postMessage({ type: 'iframePromiseRejection', details: { reason: event.reason } }, '*'); }); </script>

<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">

<title>Battery Capacity Calculator</title>
<meta name="description" content="A calculator for determining needed battery capacity from a selection of appliances.">
<meta name="keywords" content="calculator, battery, capacity, appliances">

<style>
body {
font-family: 'Comic Sans MS', cursive, sans-serif;
background: linear-gradient(to right, #8e44ad, #3498db);
color: white;
}
#main-container {
margin-top: 50px;
}
.appliance {
margin-bottom: 20px;
}
.total {
font-size: 24px;
font-weight: bold;
}
.emoji {
font-size: 24px;
}
</style>

<script type="text/javascript">
function calculateTotalPower() {
let totalPower = 0;
let totalHours = 0;

document.querySelectorAll('.appliance').forEach(function(appliance) {
let power = appliance.querySelector('.power').value;
let hours = appliance.querySelector('.hours').value;

totalPower += power * hours;
totalHours += parseFloat(hours);
});

document.querySelector('.total-power').innerText = totalPower.toFixed(0);
document.querySelector('.total-hours').innerText = totalHours.toFixed(0);
document.querySelector('.total-capacity').innerText = (totalPower / totalHours).toFixed(0);
}
</script>

<link rel="canonical" href="https://calculator.tools/app/battery-capacity-calculator-433/">
<meta charset="utf-8">

</head>
<body>
<div id="main-container" class="container">
<h1>🔋 Battery Capacity Calculator 🔌</h1>

<div class="appliance">
<h2>Appliance 1</h2>
<p>Power (in watts): <input type="number" class="power" oninput="calculateTotalPower()"></p>
<p>Hours of use: <input type="number" class="hours" oninput="calculateTotalPower()"></p>
</div>

<div class="appliance">
<h2>Appliance 2</h2>
<p>Power (in watts): <input type="number" class="power" oninput="calculateTotalPower()"></p>
<p>Hours of use: <input type="number" class="hours" oninput="calculateTotalPower()"></p>
</div>

<div class="total">
<p>Total power needed: <span class="total-power">0</span> watt hours</p>
<p>Total hours of use: <span class="total-hours">0</span> hours</p>
<p>Needed battery capacity: <span class="total-capacity">0</span> watts</p>
</div>
</div>
<script type="text/javascript"> var localStoragePrefix = "ct-433"; var lastSave = 0; function saveLocal(data) { if (Date.now() - lastSave < 1000) { return; } let cookie = localStoragePrefix + "=" + JSON.stringify(data) + "; path=" + window.location.pathname + "'; SameSite=Strict"; cookie += "; expires=" + new Date(Date.now() + 1000 * 60 * 60 * 24 * 365 * 1000).toUTCString(); document.cookie = cookie; lastSave = Date.now(); } function loadLocal() { var cookiePrefix = localStoragePrefix + "="; var cookieStart = document.cookie.indexOf(cookiePrefix); if (cookieStart > -1) { let cookieEnd = document.cookie.indexOf(";", cookieStart); if (cookieEnd == -1) { cookieEnd = document.cookie.length; } var cookieData = document.cookie.substring(cookieStart + cookiePrefix.length, cookieEnd); return JSON.parse(cookieData); } } </script>
<script type="text/javascript"> window.addEventListener('load', function() { var observer = new MutationObserver(function() { window.parent.postMessage({height: document.documentElement.scrollHeight || document.body.scrollHeight},"*"); }); observer.observe(document.body, {attributes: true, childList: true, subtree: true}); window.parent.postMessage({height: document.documentElement.scrollHeight || document.body.scrollHeight},"*"); }); </script>
</body>
</html>

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