I purchased the Duracell Optimum batteries a few months ago and noticed acid leaking from several of them. I tossed them out and kept the remaining batteries. A few days ago I went to replace a battery and saw that the remaining 6 of the 12 originally purchased are completely covered in acid leaking from the batteries. I'm not happy about this as my understanding was that these batteries were supposed to be the best. I have included 2 pics of what I'm left with.