When the power cable is connected and the computer is put in sleep mode it wakes up fine. If I unplug the cable after the computer was put in sleep mode, or if I put it to sleep mode after I have unplugged it, it will shutdown unexpectedly and start fresh.
Computer works fine when I unplug it when it's on. The only problem seems to be the combination of sleep mode and being unplugged (for now).
QUESTION: should I suspect battery issues at this point? My guess is the battery does not keep voltage high enough when the power cable is off.
ADDENDUM: windows 10 battery report: https://pastebin.com/raw/Rz1ehZBm