C battery; C cell
Abbreviation of 単二型乾電池. Used in everyday contexts for the common cylindrical battery size.
Please put C batteries in the remote control.
C size battery; C cell
Standard abbreviation for 単二型乾電池 (C battery). The numeral 2 is used in product labeling and everyday writing.
Kanji numeral variant; less common than 単２ but still seen.
Abbreviation of 単二型乾電池 (tan-ni-gata kandenchi, 'type-2 single-cell dry battery'). The numeral indicates the size category.