I haven't really paid attention to this with my macbook pro, but it takes like 3 hours for the battery to be fully charged if I use the laptop. If I don't use it at all it takes anywhere between 1 or 2 hours.
I guess I should start paying attention to the time.
But what sucks is that my old toshiba satellite laptop recharged the battery twice as fast as this macbook pro, even during use.