The S.B article number provides a main information about the relevant battery. Here you will understand the meaning of an article number.
The digit of group A identifies the battery voltage.
Example: 12 volt, 1-200 AH
The digit of group B is based on IES C60050-482*.
The digits of group C represent the amperage (in ampere hours)
Example: 55=55 AH
The digit of group D represent the Cold–test in amperes (A).
Example: 470= ICC 470A (EN)
* - International standard for batteries with normal operation