Similar experience - I too played with the camera for a couple of hours with it being more off than on, then took 2 or 3 pics and noticed the battery warning was red. Replaced battery with a fresh new version cell and took around 60 pics. The battery read 80%. I am now leaving it for 48hrs to see if it is discharging whilst the camera is off.
As I have said elsewhere, I am going to do back to back test with both the XT1 and XT2 for comparisons on battery usage.
I will also be cycling the three new cells I have for their first 5 charges. This is to maximise there ability and prevent them getting a memory, although this shouldn't be a problem, being they are lithium cells. I will also be double charging just to make sure they are at maximum capability to start.