I gots it!
It was glued on the buttons and also on the white thing that I was pulling it out of... and the battery was "FOAMED" on the circuit board O.O. But apparently I got the wrong battery. Mine was a 3.7V 180mAH (crappy) and I got an ipod battery 3.7V 330mAH and worst part... my new battery is too huge >< any ideas how to fit it in??