I may have had the batteries in for a total of 5 minutes while I was working my way through the manual and the setup procedures when I heard a loud pop...looked over and one of the batteries had burst and was bubbling fluid out the seam. The battery in line with the one that burst (cover was split on this first one) is still bubbling out the top, so I suspect the two of them went together. I had triggered one picture from the setup menu. I've never witnessed anything like this before. They were Kirkland Signature batteries...going out to buy a different brand before I give this another try...have read some poor reviews on this brand of AA batteries.