8x New In Box Headway 38120 HP 3.2V 8AH Lifepo4 - $11/Cell

These are brand new Headway 38120 HP LiFePO4 cells, supplied in their original factory packaging (8 cells per box). Recent production dates ensure fresh stock. Priced at just $11 per cell. Key Features High-discharge cylindrical LiFePO4 cells ideal for high-power applications such as car audio systems, custom battery packs, or any project requiring compact size with substantial power output. Rated for 120A continuous discharge (15C) and 240A pulse discharge (30C). Supports 80A continuous charge (10C). Compact form factor delivers impressive performance in a small package. Cell Specifications Nominal Voltage: 3.2v Chemistry: LiFePO4 Full Charge Voltage: 3.65V Full Discharge Voltage: 2.5V Capacity: 8Ah Max Continuous Charge: 80A Max Continuous Discharge: 120A Note on Assembly: These cells use M6-1.0 terminals (M6 Bolts Included) - We recommend 8mm bolts for busbars up to 1/8" thick. For thicker busbars, select bolts approximately 1/4" longer than the busbar thickness. Avoid over-tightening — use a torque wrench set to no more than 3–4 Nm to prevent damage to the cells. Important Safety Information: These cells are capable of delivering very high current. Proper handling is essential. Always use a compatible BMS, cell holders or insulation, appropriately sized busbars, and stay within the specified voltage and current limits. We are not responsible for damage caused by over-tightening, over-charging, over-discharging, short circuits, or improper assembly. Every cell is factory-tested and arrives in new condition. We also offer compatible cell holders, 100A busbars, and BMS units in our accessories section. Link to Busbars: https://batteryhookup.com/collections/accessories/products/headway-38120-100a-tinned-copper-busbars Link to Cell Holders: https://batteryhookup.com/collections/accessories/products/headway-38120-single-cell-holders-spacers body { font-family: Arial, sans-serif; background-color: #f0f0f0; margin: 0; padding: 20px; } .info, .form-section { background-color: #ffffff; padding: 15px; margin-bottom: 20px; border-radius: 5px; box-shadow: 0 2px 5px rgba(0,0,0,0.1); } .info h2, .form-section h1 { margin-top: 0; color: #0056b3; } label { display: block; margin-bottom: 5px; font-size: 0.9em; color: #333; } input[type="number"] { width: 100%; padding: 8px; margin-bottom: 10px; border-radius: 4px; border: 1px solid #ccc; font-size: 0.9em; } input[type="submit"], select { background-color: #0078d7; color: white; border: none; padding: 10px 20px; border-radius: 4px; cursor: pointer; font-size: 0.9em; } input[type="submit"]:hover { background-color: #0056b3; } Cell Specifications Nominal Voltage: 3.2vChemistry: LifeP04Full Charge Voltage: 3.65VFull Discharge Voltage: 2.5VCapacity: 8AhMax Continuous Charge: 80A Max Continuous Discharge: 120A 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 <= 3.8) { return {chemistry: "Lithium Ion", fullChargeVoltage: 4.2, fullDischargeVoltage: 2.8}; } else if (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;