1. Turn your HP dv6789ej laptop over.
2. Find the laptop battery release button lock for your HP dv6789ej laptop.
3. Now that your HP dv6789ej 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 dv6789ej battery is removed, grab your replacement HP dv6789ej battery for installation.
6. Insert the battery into the slot. Push the HP dv6789ej battery towards the laptop and secure it in place.