original question: Which battery shape format is the size of [C battery]?
answer: cylinder
answer type: Battery shape format.
auxiliary information: The 'C' battery is a standard size of battery typically used in medium-drain applications such as toys and musical instruments. As of 2007, C batteries accounted for 4% of alkaline primary battery sales in the United States. In Switzerland as of 2008, C batteries totalled 5.4% of primary battery sales and 3.4% of secondary battery sales.
The [C battery] comes in what type of battery shape format?