What type of extinguisher is recommended for use on lithium battery fires?

The recommended type of extinguisher for lithium battery fires is a dry powder extinguisher. This is because dry powder extinguishing agents, particularly those that are designed for metal fires, are effective at suppressing fires caused by lithium batteries. These extinguishers work by smothering the fire and interrupting the chemical reaction that is occurring, which is crucial in the case of lithium, as the metal can react violently to water and other agents.

Lithium battery fires can be particularly challenging to extinguish, as lithium can ignite flammable materials and create intense heat. Therefore, using a dry powder extinguisher specifically prevents additional reactions and allows for better control of the fire. The other options, such as water-based extinguishers or foam extinguishers, can exacerbate the situation, as they could react with the lithium and potentially worsen the fire. Wet chemical extinguishers are specifically designed for cooking fires and wouldn't be effective in controlling lithium battery fires as they do not address the unique properties of lithium involved in combustion.