ok, my friend crashed his T-Rex 700 and severely deformed his on-board lipo battery. However, there was no leaked. He decided that the battery is done because it might explode while charging.

So we came up with the idea of trying to make the lipo catch on fire. Not a smart idea. We removed the dean's connector and connected the positive and the negative together and then threw it pretty far. Seconds after, we saw a tiny bit of smoke and then that was it. Nothing after all. We walked close to the battery 30 minutes after, it was just sitting there looking like a normal lipo.

We thought maybe there's some kind of internal protection thing that automatically disconnects when temperature reaches certain point.

We were expecting at least a little fire, but instead it was only a tiny bit smoke.