1. Turn your Acer 1681WLCi laptop over.
2. Find the laptop battery release button lock for your Acer 1681WLCi laptop.
3. Now that your Acer 1681WLCi 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 Acer 1681WLCi battery is removed, grab your replacement Acer 1681WLCi battery for installation.
6. Insert the battery into the slot. Push the Acer 1681WLCi battery towards the laptop and secure it in place.