1. Turn your HP RL766PA laptop over.
2. Find the laptop battery release button lock for your HP RL766PA laptop.
3. Now that your HP RL766PA 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 RL766PA battery is removed, grab your replacement HP RL766PA battery for installation.
6. Insert the battery into the slot. Push the HP RL766PA battery towards the laptop and secure it in place.