1. Turn your Toshiba 1805 laptop over.
2. Find the laptop battery release button lock for your Toshiba 1805 laptop.
3. Now that your Toshiba 1805 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 1805 battery is removed, grab your replacement Toshiba 1805 battery for installation.
6. Insert the battery into the slot. Push the Toshiba 1805 battery towards the laptop and secure it in place.