So I've had my Macbook Pro for a solid two and half months now and the battery was phenomenal. It consistently held 100% charging capacity. Last Friday I checked it, and it had dropped down to 98%. Then Monday morning, it dropped to 96%. I figured I would would ahead and calibrate the battery last night. Before doing it, it was down 92%. So I calibrated the battery booted it up this morning and it's down to 84%! Is it even possible to the battery capacity to drop by 15% in a matter of 3 days!?