I just got one of those m-100 moultrie trail cameras. I just put it out for 3 weeks and checked it today and the batteries are totally dead. Granted the camera took 3500 pics in the first five days and then shut off, i figured the battery would still be AT LEAST half. I thought those cameras were supposed to be amazing at battery useage. I used those Energizer lithium batteries with the power meter on the side ( the most expensive kind) and I was wondering what everyone else used. Maybe the cold had something to do with it, or just the number of pics. Any advice?