Check battery means the battery is getting questionable, needs to be tested by a tech. The capacity is low for a MacBook Pro, as-built is more like the range of 5-6000 mAh. Voltage looks good, right where it should be in the 11.5 to 12.5 volts range. And teh cycle count is not bad at 452...been through a lot of charge cycles for only two years old.
If you can, have an Apple genius bar tech run some diagnostics on the battery.
I just wanted to follow up and explain that for some reason, the battery still is in great condition. Still is 78% but, the SERVICE BATTERY sign is gone. I believe is tha charging part of the board that is not working properly. Sometimes the charging cord wont turn on (the little green/amber light) So, yeah, the battery is not at 100% but I still get great battery life.
Thanks for the answers.