1. Turn your HP dv5231tx laptop over.
2. Find the laptop battery release button lock for your HP dv5231tx laptop.
3. Now that your HP dv5231tx 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 dv5231tx battery is removed, grab your replacement HP dv5231tx battery for installation.
6. Insert the battery into the slot. Push the HP dv5231tx battery towards the laptop and secure it in place.