Running discussion on SP, page-3831

"Considering the number of lithium-ion batteries used on the market, this energy storage system has caused little harm in terms of damage and personal injury. In spite of the good record, its safety is a hot topic that gets high media attention, even on a minor mishap.

http://batteryuniversity.com/learn/archive/lithium_ion_safety_concerns

Fires from re-filling ICEs

"A review of the literature revealed that, between 1993 and 2004, there were 243 reported incidents of fires breaking out at petrol stations.... many of the fires were ignited by the discharge of static electricity from the human body".

esdjournal.com/static/Static_Fires.pdf

Fires from collisions/accidents ..."A collision shoves hot pieces of metal into places they're not meant to go. Fuel lines get sheared, holes get poked in gas tanks, and sparks fly. I can imagine a scenario where a cut fuel line sprays fuel around enough to start the fire, or the seam between the fuel tank and the rest of the fuel system breaks, or metal jams through the fuel tank."

Thats 5 minutes on google