problems with the replaced battery

Hello to everyone! I just recently replaced the battery in my MBP 13 "mid 2009 (January 30th 2014) with an OEM purchased on the iFixit Europe store: on the package, it is reported that the battery has 1 charge cycle, it is new and has a capacity of 5577 mAh. Today, February 1st 2014, iStat Pro shows that life is 88%: I'm going to see in the information system and battery, with 4 cycles, has a capacity of 4818 mAh! I have done a reset of the SMC and PRAM but with no result .. waiting to contact the store, what do you say?