1. Turn your Compaq CQ60-135EO laptop over.
2. Find the laptop battery release button lock for your Compaq CQ60-135EO laptop.
3. Now that your Compaq CQ60-135EO 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 Compaq CQ60-135EO battery is removed, grab your replacement Compaq CQ60-135EO battery for installation.
6. Insert the battery into the slot. Push the Compaq CQ60-135EO battery towards the laptop and secure it in place.