Review on Duracell 303/357/76 Silver Oxide Button Battery Pack - Long-Lasting, Reliable Power - 3 Count by Melissa Paige

I hesitated but ordered 3 packs of Duracell 3 Pac 303/357 coin batteries. A package turned out to be returnable although it was not opened. The other 2-3 packs looked much cleaner. I looked everywhere for the date of the experiment. There was nothing. I have contacted Duracell. I have been told that not all batteries have an expiration date depending on the battery type. He said if there is no expiration date look at the back of the packing card. He said look up the copyright date and that will tell you when the batteries were made. The 3 packages I received today are from 2016, so they are over 3 years old and maybe 4 years old. Duracell gentleman said the shelf life of these batteries is 3 years. However, I received expired batteries. I just dropped them off at my local UPS store. At least I won't be buying any more Revain batteries anytime soon.