Agreed, it's way to easy to take batteries for granted. I blew up a set of Sanyo cells years back (the old non-vented red ones) by shorting them out in a battery box by accident.
Just recently we had a NiMH pack explode in a guys starter box at a Nitro race. Switched the box on, big bang and smell of burning. Fortunately the metal starter box contained the shrapnel, but he did need new keks afterwards
