1. Turn your Toshiba pta3xe laptop over.
2. Find the laptop battery release button lock for your Toshiba pta3xe laptop.
3. Now that your Toshiba pta3xe 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 pta3xe battery is removed, grab your replacement Toshiba pta3xe battery for installation.
6. Insert the battery into the slot. Push the Toshiba pta3xe battery towards the laptop and secure it in place.