Pete,
As you know, I use a flight box with power panel and 12V battery. Problem is, on those cold days we fly, we often have to flip the plane over to start and my lead wire isn't nearly long enough to reach from the panel to the plug. So have a small igniter is often the best thing. It was just curiosity. I thought either I was looking in the wrong place for the battery, or one wasn't made. And if that is the case, I just thought it was kinda weird that a sub-"C" would be available in one and not in the other type.