sorry, this is a grossly misinformed conception, the anatomy of a lithium can battery leaves the negative terminal ( the entire body of the cell ) only a millimeter or two, from the positive terminal. a small tear or opening in a very thin plastic shrink wrapper, which could be initiated by any piece of metal with a sharp edge, think coin, pocket knife, thumb tack, DIAPER pin, whatever, could result in a short.
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the above image shows just how close these two terminals are in proximity. It can happen in an instant. These are not designed to be consumer grade products...