1. Turn your Sony VGN-SR140ES laptop over.
2. Find the laptop battery release button lock for your Sony VGN-SR140ES laptop.
3. Now that your Sony VGN-SR140ES 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-SR140ES battery is removed, grab your replacement Sony VGN-SR140ES battery for installation.
6. Insert the battery into the slot. Push the Sony VGN-SR140ES battery towards the laptop and secure it in place.