1. Turn your Toshiba A660D-ST2G01 laptop over.
2. Find the laptop battery release button lock for your Toshiba A660D-ST2G01 laptop.
3. Now that your Toshiba A660D-ST2G01 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 A660D-ST2G01 battery is removed, grab your replacement Toshiba A660D-ST2G01 battery for installation.
6. Insert the battery into the slot. Push the Toshiba A660D-ST2G01 battery towards the laptop and secure it in place.