10 year shelf life. Lowest price in a year per the price history. About a decade ago I had Duracell AAs leak, haven't had any issues since then.
https://www.preppingdeals.net/deals/amazon-8-pack-duracell-coppertop-d-batteries
https://www.preppingdeals.net/deals/amazon-8-pack-duracell-coppertop-d-batteries
