CNN Anderson Cooper 360 March 25, 2014 00:40:00
Jumbo jet. watch closely, it's about to catch fire. inside is a lithium battery. when it gets too hot it ignites, just like this faa training video demonstrates. in the last two decades or so, the faa reports more than 140 incidents involving batteries in cargo or baggage. in most cases, the batteries were undeclared, baggage handlers noticed luggage on fire or hot to the touch. on board laptops, even flashlights started to smoke. even though lithium batteries can cause this, they're still allowed in electronics in the passenger cabin. but in 2008, the faa banned loose batteries in checked lug...
Source: archive.org