The worst

The worst

Duracell - 10607 - Set of 2 batteries Type MN21 12 volt SECURITY (Health and Beauty)
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Customer Review

These MN21 Duracell batteries are the worst I have ever used. I tested two packs because I thought the first one was defective. Both packs have produced the same results. The batteries take an average of two weeks in an external bell; even a stack swollen in a single week. Other brands I tested take about six months and have never inflated. The ratio is 12. These cells are thus 12 times worse than the other. Duracell is now ruled out for me.

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