1. Turn your HP WQ861UA laptop over.
2. Find the laptop battery release button lock for your HP WQ861UA laptop.
3. Now that your HP WQ861UA 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 WQ861UA battery is removed, grab your replacement HP WQ861UA battery for installation.
6. Insert the battery into the slot. Push the HP WQ861UA battery towards the laptop and secure it in place.