surface book battery drain while shut down

Hi everyone,

i am running insider build 11082.  In the past few days, my entire machine drains whether it is sleeping, hibernating or shutting down. Three days in a row now I've tested this and if my machine is unplugged and in either one of those states the battery goes down to zero.

This is my second machine because why would a third machine make a difference.

This issue apparently has nothing to do with the specific build of Windows 10 in use.  It is related to firmware/drivers which, although issued through Windows Update, are not in the same process of the Windows operating system itself.  While there may be interactions between the OS and firmware/drivers, as no updates to "Surface Hardware" has been issued since December 17, 2015, we're still all waiting for the real update that will solve the power management issues.

Thanks John1F. I had a Microsoft tech remotely check the computer today. All updates were installed. She went to device manager and reinstalled my "battery drivers?". Interesting, I note that they do now not show up in device manager now. Must be one of your tech support secrets....:) Anyway, before I called I noticed that even with no Ethernet connection connected to the USB port, I was loosing 10% power per day, completely shut down. From full charge and with 15 minutes of tech support, I was down to 80%. As to your question, Start-Power-Shutdown. I am checking again after the driver reinstall and if it happens again, I am to call back tech support. Thanks.

On my SurfaceBook i5/256/8/GPU model, I've been testing various battery drain states as well.  In my latest tests, I have "Fast Start" turned off, and I have been completely shutting down using the Start-Power-Shutdown option.

When my SB is docked to the keyboard and closed like a laptop, battery 2 (tablet) battery drains about 10% after 24 hours.  battery 1 (keyboard) drains about 5%.  This varies slightly each time I test.

When my SB tablet is disconnected and sitting no where near the keyboard dock, battery 2 (tablet) went down 0%.  I forgot to check battery 1 after this scenario, but I will keep testing.

But it sure looks like the theory of being connected to the keyboard has potential to being the issue.

I'm curious how your testing goes after you had your battery drivers reinstalled.  If it helped, also curious where she downloaded and reinstalled those drivers from.  Thanks

I've had similar experiences.  The main concern for me has been the tendency of the machine to cook itself when it was nominally in sleep or hibernate mode.  Those problems had largely abated for me but seem to have come back with the firmware update from two weeks ago.  This includes multiple cases of the machine booting itself from a full shutdown, which it didn't used to do.

I now carry the machine detached and the only problem I've had is that if the tablet is "sleeping", it will sometimes crash with bugcheck 0x14f.  That would be survivable, except that when it reboots, it doesn't go back into low power state, so again, it cooks itself in my backpack.  So now I separate the parts and shut down, and so far, that's been reliable.  No battery drain, and more importantly, no cooking.

Well here are my results. I went into power management and set everything to hibernate. I also added hibernate to the shut down menu to make it easier. Last night I put the machine in hibernate mode, the batteries at the time were at 93% for the main and 100% for the secondary. I closed the lid, left it attached and left in on the table in case it woke up. I didn't want it to cook itself in case it came on.

It did not come on and this afternoon, it was quite cool and comfortable. I hit the power button and it came on, quite quickly, and well the battery was the same as when I shut it down 12 hours ago. 93 and 100 percent. I had no other issues. So for me and I hope for others this solution works.

I have gone back and set the other options to sleep when I close the lid as I never had the sleep issue. I use the hibernate mode I added to the power options to hibernate it. This is working. It really comes down to adding it to the power options and using hibernate instead of shut down. Weird. It is almost as if the two functions are reversed. Well this solution will work for me. As long as the machine is not using up battery and not coming on and cooking itself I can live with this.

On my SurfaceBook i5/256/8/GPU model, I've been testing various battery drain states as well.  In my latest tests, I have "Fast Start" turned off, and I have been completely shutting down using the Start-Power-Shutdown option.

When my SB is docked to the keyboard and closed like a laptop, battery 2 (tablet) battery drains about 10% after 24 hours.  battery 1 (keyboard) drains about 5%.  This varies slightly each time I test.

When my SB tablet is disconnected and sitting no where near the keyboard dock, battery 2 (tablet) went down 0%.  I forgot to check battery 1 after this scenario, but I will keep testing.

But it sure looks like the theory of being connected to the keyboard has potential to being the issue.

I'm curious how your testing goes after you had your battery drivers reinstalled.  If it helped, also curious where she downloaded and reinstalled those drivers from.  Thanks

Tested again with the tablet detached from the keyboard.  Both batteries were 100% 24 hours ago, and after 24 hours of being shutdown and detached, both batteries are still at 100%

There is definitely something wrong when the tablet is connected to the keyboard as that is when it drains the battery excessively, even when powered off.  Can this be fixed with an update or firmware, or is this a hardware issue?