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recently in the c't (german computer tech magazine) was an article about the battery explosions. Basically Sony tried to get more power packed in cells with the same size. That led them to make the separator thinner. The occurance of metal particles in the production process seems to be normal, but together with the thinner separator, it comes to problems.
The particles can pierce through the separator and therefore short cutting the cell, which then would overheat. The rest is history.
So I would think that could happen to every Lithium-based battery pack coming from Sony, especially if it is high capacity in small space.
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