You can find the manufacturing date on the back of the battery. It is coded as follows: The first digit indicates the year of manufacture, the second the month of manufacture. First Example: 90 signifies November 2009. Second example: 23 means March 2012. 1,2,3 ... are January, February, March - the months of October, November and December are as 0, Y and Z shown.
From the date of manufacture the batteries are for 5 years.
Because yes is no package yet I found this very helpful - thank you!
