Dan -- As recommended, check to ensure that your batteries still take a full charge. They do wear out, and you can check their status on your camera. If you bought them both at the same time and habitually altertnate them, that could be the problem -- they've just gotten "tired" at about the same time. Has this sort of emerged, or has it just happeend all of a sudden. If it was a sudden change, I'd suspect the camera. I know that's not very scientific, but the next level up is an authorized repair depot.