Kindly qualify that untrue statement, if you will.
My background, incidentally, includes experience as a firefighter (and hazmat specialist). I'm curious about your views, which thus far are very off-base.
FAA test show lithium cells to return to cherry red while using Halon but continue to do so to keep associated material fires to a minimum.
From the book "A comprehensive guide to the hazardous properties of chemical substances" by Pradyot Patnaik:
"Water, carbon dioxide and Halon extinguishers are ineffective against Alkali metal fires. These substances, include carbon tetrachloride which is used in Halon extinguishers react violently with alkali metals."
"Vigorous reaction occurs when the metal is mixed with water. The heat of the reaction, if not dissipated, can ignite or explode hydrogen that s liberated."
More events from ALPA:
http://safetravel.dot.gov/alpa.pdf