iam also not happy with the battery life.
I turned my Surface 4 Pro with i5 and 512GB SSD on, and it is now running apprx 30 minutes.
I lost 17% prcet of battery with doing this:...
My Macbook from last year is quite better.
Any feedback will be appreciate.
I have the identical unit. I get about 5.5 hours of usable battery doing typical office tasks or drawing in Clip Studio. If I'm doing heavy CAD work, or editing video, or playing videos scaled to full screen in Chrome, Firefox, or Plex, while having other things work in the background, I can expect to get only 3-4 hours (roughly 13-17% loss in 30 minutes).
You have to remember that some Windows programs go all the way back to the early 90s, and there are a lot of chipset optimizations which are NOT universally used by 3rd party programs (such as Kayako, slack, zattoo video streaming). Apple threw out every piece of software - and effectively made every vendor re-write their software - when they switched to the OSX code base. OSX also has (imho) a better / more aggressive scheduler which allows applications fewer clock cycles and less access to increase the CPU speed. Still, if you fire up a MBP15 - which has a battery 2.5x the size of the SP4 - you can run it dead flat in 2 hours by simply encoding video using all four CPU cores at 100%.
Here's a great test - exit out of all of your tray applications (anti-virus if you have it, backups, cloud services, etc) and get a local file of an x264 encoded movie (like an MP4). Play that movie using the Microsoft Movies and TV app and see how long the machine lasts. If it's north of 7-8 hours (allowing some spare capacity so as not to drain the battery dead flat, and allow some background processes to run), your unit is normal and the programs YOU are using are causing the problem. You should write the developers and let them know that their apps are burning CPU cycles unnecessarily, and ask if they might optimize future releases for tablet devices with the the Skylake architecture.