1. Turn your Lenovo V-108120CS1-HB laptop over.
2. Find the laptop battery release button lock for your Lenovo V-108120CS1-HB laptop.
3. Now that your Lenovo V-108120CS1-HB 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 V-108120CS1-HB battery is removed, grab your replacement Lenovo V-108120CS1-HB battery for installation.
6. Insert the battery into the slot. Push the Lenovo V-108120CS1-HB battery towards the laptop and secure it in place.