How to Charge an HP Laptop Battery: A Complete Guide If you own an HP Laptop Battery Charger , knowing how to properly charge its battery can help extend its lifespan and keep your device running smoothly. In this guide, we’ll explain how an HP laptop battery charges, the best charging practices, and common issues you might face. How Does an HP Laptop Battery Charge? HP laptops use Lithium-ion (Li-ion) or Lithium-polymer (LiPo) batteries, which are rechargeable. The charging process involves: Connecting the Charger – Plug the HP power adapter into a wall outlet and connect it to your laptop. Power Delivery – The adapter converts AC (alternating current) power from the outlet into DC (direct current) power that the laptop can use. Battery Management System (BMS) – The laptop’s internal system controls the charging speed to prevent overheating and overcharging. Charging Stages – Fast Charge (0% to 80%) – The battery charges quickly. Trickle Charge (80% to 100%) – The charging slows down ...