Extinguishing of lithium fires

Scenario: Li polymer cells activated by overcharge of a single cell in a 4 series connected cell arrangement. Fire of Li cells could be effectively extinguished. The duration of fire period (open flames) could be significantly shortened (from 77 to 7 seconds) by the aerosol fire extinguisher. It could be demonstrated that the fire spreading can be avoided or significantly reduced by the use of the fire extinguisher. Extinguishing could save 2 out of 4 batteries from catching fire.