I own a MacBook Pro mid 2012 13 inch running on MacOS Sierra. Despite getting a new battery about 2 years ago, after 535 cycles the 'service battery' warning has come up. I ran a diagnostic hardware test on my computer and no hardware (i.e. battery) issues however came up. Running a CoconutBattery test, the results were my full charge capacity is 4358mAh and that my battery temperature is 37 degrees. Could someone comment on these results please and explain how in need of a replacement the battery is. Thank you