1. Turn your Sony VGN-A19TP laptop over.
2. Find the laptop battery release button lock for your Sony VGN-A19TP laptop.
3. Now that your Sony VGN-A19TP 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-A19TP battery is removed, grab your replacement Sony VGN-A19TP battery for installation.
6. Insert the battery into the slot. Push the Sony VGN-A19TP battery towards the laptop and secure it in place.