Split Fob case with box knife, cut approx. 1/16 or so deep)
carefully open casing (spring inside)
Remove circuit board
Order battery ($5-20)
Unsolder / Re-solder battery
put carefully together make sure flip key is working fine
place rubber bands around fob (not over buttons)
superglue
final product:
http://s1038.beta.photobucket.com/us...tml?sort=6&o=0
http://s1038.beta.photobucket.com/us...tml?sort=6&o=1
http://s1038.beta.photobucket.com/us...tml?sort=6&o=2