For the record

I don't normally weigh in more than once a month, much less, two days in a row.  But, given the fluctuations yesterday, I bought new batteries last night and weighed in again this morning.  I showed 211 and 26% BF about 4 times in a row before I decided that the batteries fixed it.  A 1 pound fluctuation is not really much to jump up and down about but I am going to use that as my comparison for next month.