So I turned on my computer today and checked how much battery I had left only to be greeted with ''Service Battery'' above the approx. time I can use my computer before it goes off. I ofcourse check whats going on and apparently there are 3 levels of a bad battery, Replace Soon, Replace Now, and Service Battery. I've never had any of the first two so this is really weird. Coconut battery is telling me my battery is at 57% health and 158 loadcycles. I have had my MBP for 11 months and it is the Mid 2009 15'' 2.8ghz model. Hope somebody can shed some light on this issue so I know for sure if I really have to go to an Apple store to get it fixed.