C battery
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The C battery is a standard size of dry cell battery typically used in medium-drain applications such as toys, modern boomboxes, flashlights, and musical instruments.
Two C-size batteries
D, C, AA, AAA, AAAA & 9-volt batteries
AAAA battery
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The AAAA battery is 42.5 mm long and 8.3 mm in diameter. The alkaline cell weighs around 6.5 g and produces 1.5 V. This size battery is also classified as R8D425 and 25. The alkaline battery in this s
The opening of a 9-volt battery to reveal six LR61 cells, which are similar to AAAA cells.