1. Turn your Toshiba PSAE3U-077023B laptop over.
2. Find the laptop battery release button lock for your Toshiba PSAE3U-077023B laptop.
3. Now that your Toshiba PSAE3U-077023B 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 PSAE3U-077023B battery is removed, grab your replacement Toshiba PSAE3U-077023B battery for installation.
6. Insert the battery into the slot. Push the Toshiba PSAE3U-077023B battery towards the laptop and secure it in place.