omg ... a pencil can be deadly too I'm aware of this - but this is mostly happened when people act stupid ... and recharge overdiscarged lipos ... or because people used demaged lipos (or they just want to make a action-loaded video ) some of the older boxes from derek (the servo driven gyrocam like in this original posts but for gopro => http://revenanteagle.org/checksix/gopro-gyrocam/) get's broke on some racetrack-crashes ... but none of them is exploded or they simply fellt off like here
most real racebikes don't even have a battery - or also a LiFePo Battery only for starting the engine - you can use this also to power the gyrocam ... but it's not safer at all what power-source is used is up to everyone himself - i prefer lipo-batteries ... they are small, cheap, fast charged, and deviler enough power over a long range of time.