1. Turn your Sony VGN-BX570BH laptop over.
2. Find the laptop battery release button lock for your Sony VGN-BX570BH laptop.
3. Now that your Sony VGN-BX570BH 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 VGN-BX570BH battery is removed, grab your replacement Sony VGN-BX570BH battery for installation.
6. Insert the battery into the slot. Push the Sony VGN-BX570BH battery towards the laptop and secure it in place.