How Long Does an HP Laptop Battery Take to Charge? If you own an HP Laptop Battery Charger , you might wonder, "How long does it take to charge the battery fully?" The charging time depends on several factors, including the battery capacity, charger wattage, and usage during charging. In this guide, we’ll explain everything you need to know about HP laptop battery charging times and how to optimize battery life. Factors Affecting HP Laptop Battery Charging Time Several key factors determine how long your HP laptop battery takes to charge: Battery Capacity (mAh or Wh) Larger batteries (e.g., 4,000mAh to 6,000mAh) take longer to charge. Smaller batteries (e.g., 2,000mAh to 3,000mAh) charge faster. Charger Wattage (Power Adapter) A 45W charger will charge slower than a 65W or 90W charger. Using a higher-wattage HP charger (if supported) can reduce charging time. Laptop Usage During Charging If you’re using the laptop while charging (gaming, video editing, etc.), charging will ta...