1. Turn your Toshiba F15 laptop over.
2. Find the laptop battery release button lock for your Toshiba F15 laptop.
3. Now that your Toshiba F15 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 F15 battery is removed, grab your replacement Toshiba F15 battery for installation.
6. Insert the battery into the slot. Push the Toshiba F15 battery towards the laptop and secure it in place.