I bought a new Moultrie this year and was quite impressed with the battery life. My dad had one last year that ran a 12v and the life was very short. The one I bought this year used 4 D cells. I used it for approx 2wks and the battery meter was near 80% when it was stolen. The weather was anywhere from 45-80 degrees. Life may be shorter in colder weather. I guess I will have to buy another to find out.