The weather seal may not have been breached. If you put your camera together in a nice warm house, then it would have trapped warm moist air inside it. When you

The weather seal may not have been breached. If you put your camera together in a nice warm house, then it would have trapped warm moist air inside it. When you carried it in the cold, the moisture in the air would have condensed. Best advice with batteries is to keep them in your coat pocket, where they stay reasonably warm.