Humm, I have the same low budget Stealth cam, and easily get 5wks out of my batteries. Its over 1hr away from where I live, so I only get down there about 1x month in the summer. The last time I checked it, it was almost 6wks, and the low battery indicator light wasn't even on, and had 2 pics left to take. I use Energizers, and buy them by the 8pak at walmarts.