Batteries can be quite nasty when there is an internal or external problem...esp the real high end ones.
Take my word for it, never short out a laptop battery...unless you have a fire extinq. and space to run away. I saw a lab test that got out of hand and nearly burned down the lap and building.
Frankly I am surprised they let you take them on a plane at all. If you short these you are in for a nasty experience....but they took my pen knife away?
