Acer TRAVELMATE 7730 Service Manual page 80

Insert the small flat-blade screwdriver or non-marring tool under the old battery
3
and gently pry it up until it pops out of the socket.
Make sure that the positive (+) side of the new battery is facing up, then press the
4
battery into the socket until it snaps into place.
Replace the optional IEEE 802.11 wireless card by following the instructions in
5
"Replacing the IEEE 802.11 wireless card" on page
72
67.
Chapter 3: Replacing notebook components