1. Turn your Asus 904HA laptop over.
2. Find the laptop battery release button lock for your Asus 904HA laptop.
3. Now that your Asus 904HA 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 Asus 904HA battery is removed, grab your replacement Asus 904HA battery for installation.
6. Insert the battery into the slot. Push the Asus 904HA battery towards the laptop and secure it in place.