For a set rate of power drain and the same battery chemistry, the biggest battery will last the longest.
In this case, the 'C' size.
AAA is the smallest of the real common batteries, and holds the least power and has the shortest life for a given drain. D is the largest of the real common batteries and holds the most power and will last the longest for a given drain.
a AAA battery. Or a watch battery, or a AAAA battery, or any number of battery types. http://en.wikipedia.org/wiki/List_of_battery_types
They both involve batteries.
Many different battery brands include AAA batteries some examples of AAA battery brands include two of the biggest battery brands, Energizer and Duracell.
Normal clocks use little power, for example I have one that lasts 1 year with a single AAA battery.
chemicals
What are the ingredients in a AA battery?
alkaline AAA = 1.5 volts
why do aaa batteries overheat
AAA is the size of the battery, there are many types and makes of AAA battery and the shelf life for each is different.
AAA type alkaline battery is a carbon-zinc battery; the tension is 1,5 V. The electrolyte is ammonium chloride as a paste.
AAA batteries measure one centimeter wide.