Mine gets to 100%. i think you should call apple, you might have a defective battery. Although, it might just take a while for your computer to read it correctly.
Mine starts charging veerrrry slowly when it gets above 95%, but thats normal for recharging a lithium ion battery (to keep the battery safe).
Does anyone else have this problem? I have a new Macbook, and the light on the magsafe adapter turns green, but the battery percentage on the top right of my screen never shows 100%. It always hovers between 96 and 98%
~Dan