1. Turn your Lenovo 1702 laptop over.
2. Find the laptop battery release button lock for your Lenovo 1702 laptop.
3. Now that your Lenovo 1702 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 1702 battery is removed, grab your replacement Lenovo 1702 battery for installation.
6. Insert the battery into the slot. Push the Lenovo 1702 battery towards the laptop and secure it in place.