I have a 2007 White Macbook 2.4 Intel Core 2 Duo Laptop. I purchased it in June 2007 and this is my current battery health. Check the picture below, It's pretty amazing and I don't know how I did it. I'm on my computer almost everyday. Any idead on what I did to get such great battery life after three years? I know people with newer MacBook Pros that have terrible battery life after a year and a half.
If you haven't properly calibrated your battery, chances are very high that your readings are inaccurate. This should answer most, if not all, of your battery questions: Apple Notebook Battery FAQ