Hello. I just received my replacement 13" MBP w/touch bar. I charged it up to 100%. I watched just over 2 hours of Kodi and HBO Now. It went down to 78%. I have the brightness at 100%. Would this be considered good or average battery drain? I am new to Mac, and I have read about issues with the battery and some other things that have me worried about my purchase, so I figured I would ask you knowledgeable folks here. Thank you in advance for your responses.