Cell Specifications

Nominal Voltage:
Chemistry:
Full Charge Voltage:
Full Discharge Voltage:
Capacity:
Max Continuous Charge: A
Max Continuous Discharge: A

Calculate Your Battery Pack

Desired Total Voltage (V):
Desired Power:
Watts (W)
Kilowatts (kW)

Desired Energy:
Watt-hours (Wh)
Kilowatt-hours (kWh)

function detectBatteryChemistry(nominalVoltage) {
if (nominalVoltage >= 3.6 && nominalVoltage = 3.2 && nominalVoltage <= 3.3) {
return {chemistry: LiFePO4 , fullChargeVoltage: 3.65, fullDischargeVoltage: 2.5};
} else if (nominalVoltage === 2.2) {
return {chemistry: LTO , fullChargeVoltage: 2.8, fullDischargeVoltage: 1.5};
} else if (nominalVoltage === 3.0) {
return {chemistry: Sodium Ion , fullChargeVoltage: 4.0, fullDischargeVoltage: 2.0};
} else {
return {chemistry: Unknown , fullChargeVoltage: nominalVoltage, fullDischargeVoltage: nominalVoltage};
}
}

function formatCapacity(capacity) {
var capacityInAh = capacity 1000;
if (capacityInAh % 1 === 0) {
return capacityInAh.toString() + Ah ;
} else {
return capacityInAh.toFixed(1) + Ah ;
}
}

function initialize() {
var nominalVoltage = parseFloat(document.getElementById( nominalVoltage ).value);
var capacity = parseFloat(document.getElementById( capacity ).value);
var maxCharge = parseFloat(document.getElementById( maxCharge ).value);
var maxDischarge = parseFloat(document.getElementById( maxDischarge ).value);
var batteryDetails = detectBatteryChemistry(nominalVoltage);
document.getElementById( cellVoltage ).textContent = nominalVoltage + V ;
document.getElementById( cellChemistry ).textContent = batteryDetails.chemistry;
document.getElementById( cellFullChargeVoltage ).textContent = batteryDetails.fullChargeVoltage + V ;
document.getElementById( cellFullDischargeVoltage ).textContent = batteryDetails.fullDischargeVoltage + V ;
document.getElementById( cellCapacity ).textContent = formatCapacity(capacity);
document.getElementById( cellMaxCharge ).textContent = maxCharge.toString();
document.getElementById( cellMaxDischarge ).textContent = maxDischarge.toString();
}

function calculatePackConfiguration() {
var nominalVoltage = parseFloat(document.getElementById( nominalVoltage ).value);
var capacity = parseFloat(document.getElementById( capacity ).value);
var maxCharge = parseFloat(document.getElementById( maxCharge ).value);
var maxDischarge = parseFloat(document.getElementById( maxDischarge ).value);

var desiredVoltage = parseFloat(document.getElementById( desiredVoltage ).value);
var powerUnit = document.getElementById( powerUnit ).value;
var desiredWatts = parseFloat(document.getElementById( desiredWatts ).value);
if (powerUnit === kW ) {
desiredWatts *= 1000;
}

var energyUnit = document.getElementById( energyUnit ).value;
var desiredWattHours = parseFloat(document.getElementById( desiredWattHours ).value);
if (energyUnit === kWh ) {
desiredWattHours *= 1000;
}

var cellsInSeries = Math.ceil(desiredVoltage nominalVoltage);
var wattCellsInParallel = Math.ceil(desiredWatts (cellsInSeries * detectBatteryChemistry(nominalVoltage).fullDischargeVoltage * maxDischarge));
var energyCellsInParallel = Math.ceil((desiredWattHours (cellsInSeries * nominalVoltage)) (capacity 1000));
var cellsInParallel = Math.max(wattCellsInParallel, energyCellsInParallel);
var totalCells = cellsInSeries * cellsInParallel;
var totalAmpHours = (capacity 1000) * cellsInParallel;
var totalKWh = (totalAmpHours * (cellsInSeries * nominalVoltage)) 1000;
var maxChargeCurrent = cellsInParallel * maxCharge;

document.getElementById( result ).innerHTML =
Pack Configuration: + cellsInSeries + s + cellsInParallel + p
+
Total Cells Needed: + totalCells +
+
Nominal Voltage: + (cellsInSeries * nominalVoltage).toFixed(2) + V
+
Amp Hours of the Pack: + totalAmpHours.toFixed(2) + Ah
+
kWh of the Pack: + totalKWh.toFixed(2) + kWh
+
Fully Charged Voltage: + (cellsInSeries * detectBatteryChemistry(nominalVoltage).fullChargeVoltage).toFixed(2) + V
+
Fully Discharged Voltage: + (cellsInSeries * detectBatteryChemistry(nominalVoltage).fullDischargeVoltage).toFixed(2) + V
+
Max Continuous Charge Current: + maxChargeCurrent.toFixed(2) + A
+
Max Continuous Discharge Current: + ((desiredWatts (cellsInSeries * detectBatteryChemistry(nominalVoltage).fullDischargeVoltage)).toFixed(2)) + A
;
}

window.onload = initialize;
This calculation also takes into consideration the maximum continuous amp ratings of the cells.

THIS IS ONE OF THE MOST POPULAR CAR AUDIO CELLS. MOST OF YOU WILL MAKE CUSTOM BUSBARS FOR THESE. WE ALSO HAVE KITS AVAILABLE, BMS UNITS, AND EVEN SUPER BEAST MODULES WITH 48 CELLS AND ALL THE HOLDERS AND BUSBARS INCLUDED. JUST KEEP IN MIND HOW MUCH POWER THESE THINGS ARE CAPABLE OF AND USE THE PROPER THICKNESS TO CARRY THAT POWER FOR WHATEVER YOUR APPLICATION REQUIRES AND USE A BMS. THESE ARE 40 TIMES MORE POWERFUL THAN MOST 18650 BATTERIES. CHECK OUT THE SPECS BELOW, THESE ARE REAL SPECS.

If you over tighten your bolts it could damage the cell. If you have a torque wrench set it to 3nm. Do not tighten over 4nm.

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