Battery Drains While Shutdown

I did START > POWER > SHUTDOWN procedure and disconnected from power and removed the flip keyboard cover as well. When I check the registry 'CsEnabled' is 1. So I assume Connected Standby is ON even though I do the START > POWER > SHUTDOWN. Right?

If you charged to 100% and shut it down from Start, Power, Turn Off and unplugged it, 83% after 24 hours is a little high. If it was in Connected Standby, this would be normal.

Thanks for the reply. Just to be clear, so even "Shutdown" doesn't really mean turn off the SP4 completely anymore. It just goes into what is called "Connect Standby", right? If so is there a way I can off this without windows registry edit hack found on internet.

Also, I have been keeping "Turn on fast startup" unticked in Control Panel\All Control Panel Items\Power Options\System Settings. Does this disable "Connected Standby" or this is a different function in itself? Moreover, does unticking this help to slow battery drain?

10% over 24 hours is really pretty normal. Look at the sleep study. When you are in "sleep" - connected standby/instant go - your Surface goes through some state changes. It is in "sleep" mode for about 4 hours but can still be performing network functions, etc. before it goes into a deeper hibernate mode. There is a technical document at https://docs.microsoft.com/en-us/windows-hardwa... - background activity IS happening.

I am having massive battery drain when surface pro 4 is shut down. Please find the link to sleep and battery report in OneDrive.

link: https://1drv.ms/f/s!Ag\_kBkTes5t4ii5E1jtLMFLQ9CPw

Can someone with the knowledge be kind enough to have a look and let me know if there is something wrong.

Thanks