1. Turn your HP dv6503au laptop over.
2. Find the laptop battery release button lock for your HP dv6503au laptop.
3. Now that your HP dv6503au laptop battery is unlocked, find the battery release button down.
4. Holding the laptop battery release button, gently pull your battery away from the laptop.
5. Now that your HP dv6503au battery is removed, grab your replacement HP dv6503au battery for installation.
6. Insert the battery into the slot. Push the HP dv6503au battery towards the laptop and secure it in place.