Hi all, In my bug out bag i had a nalgene bottle with a polar pur jar,gauze, disposable contacts and 8 Nimh AA batteries. After 6 months of sitting together, the batteries corroded, the gauze packaging turned brown. Thus, the batteries were a goner, I'm not sure about the polar pur or the disposable contacts. To be on the safe side, I think I'll chuck them. Comments and suggestions appreciated. Thanks.