1) Open the registry editor. (open search Cortana and type "regedit")
2) Using the folders on the left hand side, navigate to the following folder: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Power
3) Change the value of "CsEnabled" from 1 to 0
4) Reboot your Surface.
5) After rebooting, make sure that your power button is set to turn off your display in the power and sleep settings.
Special thanks to user Sarat.1358 for this awesome solution!
I recommend setting your Surface to Hibernate after about 20 - 30 minutes to extend battery life. Check out my battery life video for more info: