Asus Notebook PC (E-Manual) - Manual (Page 104)

10 Notebook PC E-Manual
Refer to the following steps when installing a new battery pack for your
Notebook PC.
A. Move the manual battery lock to the unlocked position.
B. Move and hold the spring battery lock to an unlocked position.
C. Pull out the old battery pack from the battery slot then release
your hold on the spring battery lock.