Unless you are going to do videos on the camera , you can get plenty of pics on a 4GB card . Buy a couple of 4 GB cards so you will have one to swap out . I can check the SanDisk card on my Cannon Camera but if I use Lexar SD cards , I have to use a Card Reader with the computer .
I use the cheaper Alcaline batteries for the camera . Saw an article in one of the Consumor Report magazines that showed where the higher priced big name batteries didn't last all that much longer . Most all Trail Cams will show the battery life left when you go to check them .