1. Turn your Sony PCG-V505BP laptop over.
2. Find the laptop battery release button lock for your Sony PCG-V505BP laptop.
3. Now that your Sony PCG-V505BP 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-V505BP battery is removed, grab your replacement Sony PCG-V505BP battery for installation.
6. Insert the battery into the slot. Push the Sony PCG-V505BP battery towards the laptop and secure it in place.