Yesterday was my semi yearly batt replacement day. of my 4 low/ 3 no lo indicator ds10s, ALL but 1 show over 1.5v on each battery! replaced the 1.4v one with brand new heavy duty alkalines that measure 1.6v, and guess what? lo batt indicator is still on!
no, I think the lo batt indicator bit in the 32bit word sent out is flaky.
BTW, most of my eagle eye motion sensors were around 1.3v and still worked fine but they got new batts too.