1. Turn your HP ze4510AP laptop over.
2. Find the laptop battery release button lock for your HP ze4510AP laptop.
3. Now that your HP ze4510AP 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 ze4510AP battery is removed, grab your replacement HP ze4510AP battery for installation.
6. Insert the battery into the slot. Push the HP ze4510AP battery towards the laptop and secure it in place.