1. Turn your HP nx6210 laptop over.
2. Find the laptop battery release button lock for your HP nx6210 laptop.
3. Now that your HP nx6210 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 nx6210 battery is removed, grab your replacement HP nx6210 battery for installation.
6. Insert the battery into the slot. Push the HP nx6210 battery towards the laptop and secure it in place.