1. Turn your Sony PCG-FX150,PCG-FX150K laptop over.
2. Find the laptop battery release button lock for your Sony PCG-FX150,PCG-FX150K laptop.
3. Now that your Sony PCG-FX150,PCG-FX150K 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 PCG-FX150,PCG-FX150K battery is removed, grab your replacement Sony PCG-FX150,PCG-FX150K battery for installation.
6. Insert the battery into the slot. Push the Sony PCG-FX150,PCG-FX150K battery towards the laptop and secure it in place.