So I have been getting around 4-5.5 hours each time from my mac air 11/i7/8 for a week for just listening to music or using safari with keyboard brightness 0, screen brightness 5-6 clicks away from max, and wifi on. My activity monitor mainly stays around 3% CPU use. No lightroom or any sort of intensive task. I was wondering if I brought it to the applestore, will they be able to check right away if the battery works as it should? I already have a screen protector and a decal on, so I do not want it to get replaced. I just want reassurance that the battery is working well or if it does have some problem. I have already done the battery calibration with running it to sleep, waiting 5 hours, then charging to max + 2 hrs.