Example: S/N: RVGTWB15068415
Year Identifier (Y): A single character alphanumeric code (excluding letters I, O) which is used to identify the year a serialized item is manufactured.
Week Identifier (WW): A two character numeric code (01 thru 52) which is used to identify the week the serialized item is manufactured. Week “01” is the first full week in January, and Week “52” is the last week in December.
So, RVGTWB15068415 means the battery shipped out 15th week of 2011