Different kinds of batteries

It is generally divided into: 1.2.3.5.7, of which No. 5 and No. 7 are particularly commonly used. The so-called AA battery is No. 5 battery, and AAA battery is No. 7 battery.

Diameter of type D battery (large battery / lr20 / AM1) ф 34.2； Height 61.5mm

Diameter of type C battery (No. 2 battery / LR14 / AM2) ф 26.2； Height 50.0mm

AA battery (No. 5 battery / LR6 / AM3) diameter ф 14.5； Height 50.5mm

AAA battery (No. 7 battery / LR03 / AM4) diameter ф 10.5； Height 44.5mm

AA / 2 battery (No. 8 battery LR1 / Am5) diameter ф 11.0； Height 30.0mm

AAAA battery (No. 9 battery / lr61 / am6) diameter ф 8.0； Height 39.5mm

AAAA / 2 battery (small 9 battery / lr61 / am6) diameter ф 8.0； Height 28.0mm