Today is the seventh day that I have spent with my MacBook Pro. I set it up as new and have been unable to get more than 6 hours of battery life when using it lightly (Safari, Tweetbot, and Ulysses). When using Photoshop and Lightroom, I cannot seem to pass the two-hour barrier. I do not find this acceptable and it seems that I am not the only one having problems.
As you can see in the above screenshot, my typical discharge rate when the computer is idle, is around 8-10 Watts, usually around 9. Taking into account that my computer has a full charge capacity of 4431 mAh and the battery is 11.4 V, that would give my particular model around 50 Wh, which means it would need to discharge at around 5 Watts to achieve a 10 hour battery life. My average discharge rate is around 9 Watts, which means in theory I can get around 6 hours. This has been true for these past few days, usually averaging around 5 hours.
None of the software that I have installed and running has any significant energy impact, according to
top and Activity Monitor, apart from Lightroom and Photoshop.
I have also tried resetting SMC, NVRAM, uninstalling various software, running 10.12.1, upgrading to 10.12.2 beta, all to no avail. This MacBook Pro, when not connected to Wi-Fi, without any software installed, without me being signed into iCloud, will discharge at 6+ Watts.
I am waiting to get a replacement unit — it should arrive before Christmas. Hopefully.
It sure is beautiful though.