CODE / DATE CODE
letter code ( B0, A9, etc.) is also placed on the battery to make it
easier for resellers and consumers to identify the production date.
The code is on a sticker affixed to the battery or hot-stampded into
the case cover along the top edge. The first letter represents the month,
and the second number represents the year. The picture below shows B9,
which is February 1999. Fresh batteries are always the best. Refer to
the battery vendor or supplier for this information.