I noticed yesterday that I had a mention on the OSH Park blog.  Besides that, I have found through my testing this month that the device can run for about 30 hours on a CR2035 battery.  In normal use, this amounts to almost a full month of usage, which isn’t bad, but I’m going to experiment to see if I can get it better.  I’ll start by tweaking the firmware to see if I can get it to be a bit sleepier and still work.  Stay tuned.