How Long to Charge an HP Laptop Battery? A Complete Guide If you own an HP Laptop Battery Charger , you might wonder, "How long should I charge my laptop battery?" Proper charging habits can extend battery life and keep your device running smoothly. In this guide, we’ll explain how long it takes to charge an HP laptop battery, factors affecting charging time, and tips to maximize battery lifespan. How Long Does It Take to Charge an HP Laptop Battery? The charging time for an HP laptop battery depends on several factors, including: Battery Capacity (measured in watt-hours, Wh) Charger Wattage (standard HP chargers are usually 45W, 65W, or 90W) Laptop Usage During Charging (using the laptop while charging slows it down) Battery Health (older batteries take longer to charge) On average, most HP laptops take about 1.5 to 3 hours to charge from 0% to 100%. Charging Times for Different HP Laptop Models HP Laptop Model Battery Capacity Approx. Charging Time HP Pavilion 41Wh - ...