1. Turn your HP dv9590ea laptop over.
2. Find the laptop battery release button lock for your HP dv9590ea laptop.
3. Now that your HP dv9590ea 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 dv9590ea battery is removed, grab your replacement HP dv9590ea battery for installation.
6. Insert the battery into the slot. Push the HP dv9590ea battery towards the laptop and secure it in place.