1. Turn your Toshiba PSAF3U-16J01D laptop over.
2. Find the laptop battery release button lock for your Toshiba PSAF3U-16J01D laptop.
3. Now that your Toshiba PSAF3U-16J01D 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 PSAF3U-16J01D battery is removed, grab your replacement Toshiba PSAF3U-16J01D battery for installation.
6. Insert the battery into the slot. Push the Toshiba PSAF3U-16J01D battery towards the laptop and secure it in place.