[MetalMan]

In case you can't read that language (I can't!), here is a direct link to the video:
http://ludwigdanninger.de/Videos/Son...Explosion2.mpg

As far as the content of the video, that is definitely a possibility of happening. The chances of something as bad as that happening are very slim, though. I am sure that the person running the test set that Lipo up to a very high charge voltage, causing complete instability of the cell, which led to that explosion. But you can see that the pack let out smoke before it actually erupted. A normal person that monitors their Lipo packs during charge (and that check to make sure the correct voltage is set) should not have anything damaged because they would be able to either remove the cell from the area before an explosion, or cut the charge. Again, this is not normal for a Lipo because it was put through an extreme overcharge condition. Really the only possibility of this happening is from carelessness to check for the proper charge voltage before starting the charge.