Alkaline C batteries have a storage capacity up to 8000 mAh while rechargeable NiMH C batteries can hold up to 6000 mAh.
Zinc-carbon C batteries usually hold up to 3800 mAh.
Compared to the AAA and AA batteries, C-batteries' storage capacities are significantly higher.
[5] The AA, AAA, and N sizes have been in common use since the 1950s.
[6] The C battery is called "14" in current ANSI standards of battery nomenclature, and in IEC standards is designated "R14".