I think when this technology was first introduced, there was a lot of confusion between lithium "ion" and Lithium "iron" . That one letter makes all the difference in the world. They are really two different chemical processes, and technologies, but the name is so similar that I think there were a lot of things that were misunderstood, attributed incorrectly, etc. The Li-iron technology seems to be a much safer (though somewhat less efficient) battery - and that is what the Earth -X is. I think some of the problems that the Li-ion batteries had were miss- attributed to the Li-iron batteries and thus sullied the reputation of both technologies and specifically the Li-iron batteries. I believe that most if not all the fires and runaways were in the Li-ion series of batteries ( I could be wrong, so please don't take my meager knowledge as the gospel) but you now have a couple of terms that are similar but different (Li-ion Vs Li-iron) to google search.
Hope this helps
Bill
((tried (unsuccessfully) to turn a floatplane into a submarine))