Warranty Replacement

I've had a 12 box of Duracell Coppertop C battereries of which I used four. Now that they are discharged, I tried replacing them but the remaining eight are dead. I reinserted the used four batteries in my motion light and they still work but are very dim. The lot # is 2E24J2 and the expiration date is 2022. The box says Guaranteed 10 years in storage. How can I obtain warranty replacement for the eight unused batteries.