1. Turn your Toshiba M30-S3501 laptop over.
2. Find the laptop battery release button lock for your Toshiba M30-S3501 laptop.
3. Now that your Toshiba M30-S3501 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 M30-S3501 battery is removed, grab your replacement Toshiba M30-S3501 battery for installation.
6. Insert the battery into the slot. Push the Toshiba M30-S3501 battery towards the laptop and secure it in place.