I don't usually do reviews , but these batteries losted so long , I felt that I had to in this case . I have a few maglite flashlights , two with C cells and two with D cells , these are the ones that we depend on the most . We don't muse them very much but we want them to work when we need them . I went to use one 3 D cell flashlight and it was dead , I was fuming , I went and got one of the others and used that one. When I was finished I decided to change the batteries in the dead one . To my surprise the dead batteries had a " BEST IF INSTALLED BY JAN 2002 " . They still looked brand new . I can only hope the new Duracells I put in last as long.