Investigators in the U.S. and Japan are probing what caused lithium-ion batteries to burn on two Dreamliners owned by Japanese airlines, triggering the grounding.
After all, NTSB chair, Deborah Hersman noted that the FAA approved the 787 for flight because Boeing convinced it the lithium-ion battery would only burn up once every 10 million flight hours.
We have demonstrated the extremely high ion energies needed to ignite this fuel, and the confinement time of tens of nanoseconds that we need to burn it.