1. Turn your Toshiba P100-118 laptop over.
2. Find the laptop battery release button lock for your Toshiba P100-118 laptop.
3. Now that your Toshiba P100-118 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 P100-118 battery is removed, grab your replacement Toshiba P100-118 battery for installation.
6. Insert the battery into the slot. Push the Toshiba P100-118 battery towards the laptop and secure it in place.