I agree that there is a lot of myths, even scare mongering about lipo packs; so much so i decided to find out for myself just what damage a lipo pack would have to substain before flaming. I had an Apex 11.v 3 cell pack with a puffed cell that i used to experiment with and let me tell you up front - it took a hell of a lot of abuse before it gave in. To start with i simulated a hard crash by throwing the pack as hard as i could onto the ground - concrete. The packs compressed and seperated into seperate cells. Despite the major damage - no leak, no smoke, no flame. I then selected the most damaged cell and dropped a very heavy brick onto it. It took two hard drops to make the pack fail. The amount of smoke emitted surprised me - there was more smoke than flame and it was very short lived. I had expected major flames, but the opposite was true. Whilst is did burn fast and hot, it was all over in a few seconds.

Bottom line is that lipos, if severely abused will fail & flame. Naturally, I treat all my packs with respect, but my understanding of their limits gives me some faith in their overall safety.

The other 2 cells were disposed of safely in a bucket of water - lots of fizzing, reminded me of an alka seltzer commercial!