I just got a Moultrie Gamespy D40, and I put it out last weekend. 7 days later, and 210 pics, my batteries were down to 55%. I have heard that this camera should last up to 6 weeks without having to change the batteries. What are you guys using for batteries that have this camera, and how long are they lasting. I know I cant afford to put 6 new D cell batteries in it every week.[:@]