1. Turn your IBM R50E laptop over.
2. Find the laptop battery release button lock for your IBM R50E laptop.
3. Now that your IBM R50E 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 IBM R50E battery is removed, grab your replacement IBM R50E battery for installation.
6. Insert the battery into the slot. Push the IBM R50E battery towards the laptop and secure it in place.