1. Turn your Compaq A945EF laptop over.
2. Find the laptop battery release button lock for your Compaq A945EF laptop.
3. Now that your Compaq A945EF 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 A945EF battery is removed, grab your replacement Compaq A945EF battery for installation.
6. Insert the battery into the slot. Push the Compaq A945EF battery towards the laptop and secure it in place.