I went and sat for 3 hrs to take a little inventory for my boy since I'm tagged out and my friggin cell cameras keep eating batteries. I put new batteries in 7 moultries last night at 8:Pm after work and all of them are giving me low battery messages and only one sending pics. I took 10 spypoints out of service earlier in the year for the same reason.
Oh, and I saw 18 does and 3 bucks over the 3 hrs.
How many pics you getting a day? Are you using lithium batteries? In my short experience with cell cams lithium is the only way to go with cell cams.