Take that pack of batteries back to Sam's but first you might want to test them on a battery tester. That way you know how many were bad, etc. I forgot to mention it above but when I change SD cards in my cams, I always carry extra Energizer batteries and a battery tester. I will test individual batteries in each cam so i know I'm leaving the cam with a set of fully charged batteries. I've noticed that some batteries run out of juice quicker than others but not the immediate failure you guys have seen.