The battery log:
20 Oct 2014 05:09:03 - 8 hours ago battery -11 20 Oct 2014 03:10:45 - 10 hours ago battery 0 20 Oct 2014 01:41:49 - 11 hours ago battery 11 19 Oct 2014 22:31:53 - 14 hours ago battery 22 19 Oct 2014 22:26:49 - 14 hours ago battery 33 19 Oct 2014 15:23:59 - 21 hours ago battery 44 19 Oct 2014 14:47:19 - 22 hours ago battery 55 19 Oct 2014 14:41:56 - 22 hours ago battery 44 19 Oct 2014 12:28:19 - 1 day ago battery 55 19 Oct 2014 00:28:27 - 2 days ago battery 66 18 Oct 2014 12:38:21 - 2 days ago battery 77 16 Oct 2014 01:42:25 - 4 days ago battery 88 15 Oct 2014 23:21:16 - 5 days ago battery 100
-11 huh? Is this one of the new ones?
-11 huh? Is this one of the new ones?
Yes it is. Is -11% battery life some sort of temporal paradox? 
Sounds like it is defective. The SmartThings Multi’s are also defective in this regard (from what support told me some time ago).
Okay - so I’ve actually ordered a second one for another room. Should I also expect the new one to perform in the same fashion?
Possibly. Did the battery actually die, or do you think it is just being reported incorrectly?
Thinking it’s incorrectly reporting. Working with Ryan at Support - He updated the Zigbee firmware. I’m also going to swap out a new battery tonight and see if that resolves the issue.