1. Turn your Toshiba PPM40C-TD10TE laptop over.
2. Find the laptop battery release button lock for your Toshiba PPM40C-TD10TE laptop.
3. Now that your Toshiba PPM40C-TD10TE 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 PPM40C-TD10TE battery is removed, grab your replacement Toshiba PPM40C-TD10TE battery for installation.
6. Insert the battery into the slot. Push the Toshiba PPM40C-TD10TE battery towards the laptop and secure it in place.