Is this a true statement?
"LiPo 4 cells are very stable, do not catch on fire, do not become unstable, contain no heavy metals, can be disposed of in the regular trash and pose no environmental hazards."
the does not catch fire part isn't true.
you very much can make them catch fire, it just happens to be harder to do than to get say a Li-Co battery to catch fire (activation energy is higher).
the rest of it is true.