1. Turn your Sony VPCF117FD/B laptop over.
2. Find the laptop battery release button lock for your Sony VPCF117FD/B laptop.
3. Now that your Sony VPCF117FD/B 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 Sony VPCF117FD/B battery is removed, grab your replacement Sony VPCF117FD/B battery for installation.
6. Insert the battery into the slot. Push the Sony VPCF117FD/B battery towards the laptop and secure it in place.