1. Turn your Toshiba L550D-13V laptop over.
2. Find the laptop battery release button lock for your Toshiba L550D-13V laptop.
3. Now that your Toshiba L550D-13V 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 Toshiba L550D-13V battery is removed, grab your replacement Toshiba L550D-13V battery for installation.
6. Insert the battery into the slot. Push the Toshiba L550D-13V battery towards the laptop and secure it in place.