However it seems that Consumer Reports is standing by their findings. According to 9to5Mac, they have gotten in touch with the organization who seemed to be pretty confident about their report and how it would most likely not be changed anytime soon. 9to5Mac pointed out how in some cases their testing resulted in battery life double that of what Apple advertised, which was nothing short of amazing (and maybe impossible?).
According to the statement made by Consumer Reports’ director of electronics testing Maria Rerecich, “In this case, we don’t believe re-running the tests are warranted for several reasons. First, as we point out in our original article, experiencing very high battery life on MacBooks is not unusual for us – in fact we had a model in our comparative tests that got 19 hours.”
“Second, we confirmed our brightness with three different meters, so we feel confident in our findings using this equipment. Finally, we monitor our tests very closely. There is an entry logged every minute, so we know from these entries that the app worked correctly.” It is unclear as to why the battery life seems to be so varied across the board, but given that people use their laptops in a number of different ways and at different settings, we guess it would be hard to pinpoint why some users experience shorter/longer battery life than others.