Hey guys ; I have a question. I have a Macbook Pro Early 2011 and its battery sometimes says that Service Battery. Yes I know that it is 3 years old computer and it is usual to do this thing but it happens sometimes and battery draining normally and changes according to my usage of course. But nothing major in the computer about the battery actually and it is normal for 3 years of usage and draining faster. Why is that doing it or what should I do for that ? Thnx.