How Long to Charge an HP Laptop Battery for Best Performance If you own an HP Laptop Battery Charger, you might wonder, "How long should I charge my laptop battery?" Proper charging habits can extend your battery’s lifespan and keep it running efficiently. In this guide, we’ll explain the ideal charging time for an HP laptop battery, factors affecting charging speed, and tips to maintain battery health. How Long Does It Take to Fully Charge an HP Laptop Battery? Most HP laptops take 1.5 to 3 hours to charge from 0% to 100%, depending on: Battery Capacity (measured in mAh or Wh) – Larger batteries take longer. Charger Wattage – A higher-wattage charger (e.g., 65W vs. 45W) charges faster. Laptop Usage During Charging – Heavy tasks (gaming/video editing) slow charging. Battery Age & Health – Older batteries charge slower and drain faster. Charging Times for Common HP Laptop Models HP Laptop Model Battery Capacity Approx. Charging Time (0-100%) HP Pavilion 15 3-cell, 4...