1. Turn your Sony VGN-SR190NHB laptop over.
2. Find the laptop battery release button lock for your Sony VGN-SR190NHB laptop.
3. Now that your Sony VGN-SR190NHB 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-SR190NHB battery is removed, grab your replacement Sony VGN-SR190NHB battery for installation.
6. Insert the battery into the slot. Push the Sony VGN-SR190NHB battery towards the laptop and secure it in place.