1. Turn your Lenovo 45N2971 laptop over.
2. Find the laptop battery release button lock for your Lenovo 45N2971 laptop.
3. Now that your Lenovo 45N2971 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 Lenovo 45N2971 battery is removed, grab your replacement Lenovo 45N2971 battery for installation.
6. Insert the battery into the slot. Push the Lenovo 45N2971 battery towards the laptop and secure it in place.