1. Turn your Toshiba 2415-S105 laptop over.
2. Find the laptop battery release button lock for your Toshiba 2415-S105 laptop.
3. Now that your Toshiba 2415-S105 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 2415-S105 battery is removed, grab your replacement Toshiba 2415-S105 battery for installation.
6. Insert the battery into the slot. Push the Toshiba 2415-S105 battery towards the laptop and secure it in place.