It has been widely reported that there have been problems with the initial rollout of the Surface Book and Surface Pro 4 devices. There have been screen flickering issues as well as battery drain issues that have been identified as being related to Windows Hello – Microsoft’s secure login system. The flickering issues were sorted fairly quickly but the battery woes still remain and will do so until sometime in the New Year when further patches are released.
An apology of sorts has been posted in the Microsoft Answers support forum:
A Note to Our Customers from The Microsoft Surface Team
Josh_F asked on December 11, 2015
First, a big thanks to all of our customers for your open and candid feedback on Surface Book and Surface Pro 4. For those of you who’ve had a less-than-perfect experience, we’re sorry for any frustration this has caused. Please know that we’re reading your comments and hearing you loud and clear. Your input is incredibly valuable in helping us address your questions with timely updates and fixes. Since launch, we have aggressively pursued the most pressing feedback. We have already issued a number of updates via Windows Update and are working to issue additional updates and fixes as soon as possible to further improve the overall Surface experience. To ensure that you have received the most recent updates, we recommend you check out our support page with instructions on how to download and install the latest Surface and Windows updates. Surface Book update history can be found here and Surface Pro 4 update history can be found here.
Thanks again for your feedback. We’ll continue to communicate as updates and fixes become available via moderator posts to http://answers.microsoft.com/forum/surface. If you have any additional support questions, please visit our main support page.
-The Microsoft Surface Team