Result:
Enter the battery capacity and the C-rate value to see the equivalent charge/discharge current.
function calculateCRate() {
var capacity = document.getElementById("batteryCapacity").value;
var cRate = document.getElementById("cRateValue").value;
var resultDiv = document.getElementById("result");
resultDiv.innerHTML = ""; // Clear previous results
var capacityNum = parseFloat(capacity);
var cRateNum = parseFloat(cRate);
if (isNaN(capacityNum) || isNaN(cRateNum) || capacityNum <= 0 || cRateNum <= 0) {
resultDiv.innerHTML = "Please enter valid positive numbers for battery capacity and C-rate value.";
return;
}
// Convert mAh to Ah for easier calculation with Amps
var capacityAh = capacityNum / 1000;
// Calculate the current in Amps
var currentAmps = capacityAh * cRateNum;
resultDiv.innerHTML =
"Battery Capacity: " + capacityNum.toFixed(0) + " mAh" +
"C-Rate: " + cRateNum.toFixed(2) + "C" +
"Equivalent Charge/Discharge Current:
" + currentAmps.toFixed(2) + " A";
}
.calculator-container {
font-family: sans-serif;
max-width: 600px;
margin: 20px auto;
padding: 20px;
border: 1px solid #ddd;
border-radius: 8px;
box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}
.calculator-form {
margin-bottom: 20px;
padding-bottom: 20px;
border-bottom: 1px solid #eee;
}
.calculator-form h2 {
text-align: center;
margin-bottom: 15px;
color: #333;
}
.calculator-form p {
font-size: 0.9em;
color: #555;
line-height: 1.5;
margin-bottom: 20px;
}
.form-group {
margin-bottom: 15px;
}
.form-group label {
display: block;
margin-bottom: 5px;
font-weight: bold;
color: #444;
}
.form-group input[type="number"] {
width: calc(100% – 22px);
padding: 10px;
border: 1px solid #ccc;
border-radius: 4px;
font-size: 1em;
}
.calculator-form button {
width: 100%;
padding: 12px;
background-color: #007bff;
color: white;
border: none;
border-radius: 4px;
font-size: 1.1em;
cursor: pointer;
transition: background-color 0.3s ease;
}
.calculator-form button:hover {
background-color: #0056b3;
}
.calculator-result h3 {
margin-bottom: 10px;
color: #333;
}
#result {
background-color: #f9f9f9;
padding: 15px;
border-radius: 4px;
border: 1px solid #eee;
min-height: 80px;
display: flex;
align-items: center;
justify-content: center;
text-align: center;
}
#result p {
margin: 5px 0;
font-size: 1.1em;
color: #333;
}
#result strong {
color: #28a745;
}