Battery capacity depreciation

[kettlecorn]

Ive had my MBP 13" (2011 core I5) for about 5 months now and the capacity is 89% of the design capacity. I did notice a drop in battery life. Is this a normal rate of depreciation?

 

[GGJstudios]

This should answer most, if not all, of your battery questions:

Apple Notebook Battery FAQ​