1. Turn your Sony KFRGBA028B laptop over.
2. Find the laptop battery release button lock for your Sony KFRGBA028B laptop.
3. Now that your Sony KFRGBA028B 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 KFRGBA028B battery is removed, grab your replacement Sony KFRGBA028B battery for installation.
6. Insert the battery into the slot. Push the Sony KFRGBA028B battery towards the laptop and secure it in place.