I've been using Duracells and was getting 2-2 1/2 weeks out of them,but this past week when it was cold, it took 43 pictures and the batteries were dead in a week. I guess the cold weather really takes a toll on it. I just boughttwo 6 volt rechargable batteries and charger. My brother is going to rig it up for me so I can use them. I use a 256 card that costs $20 at Wal Mart.