1. Turn your Toshiba A500-18X laptop over.
2. Find the laptop battery release button lock for your Toshiba A500-18X laptop.
3. Now that your Toshiba A500-18X 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 A500-18X battery is removed, grab your replacement Toshiba A500-18X battery for installation.
6. Insert the battery into the slot. Push the Toshiba A500-18X battery towards the laptop and secure it in place.