If a lithium-ion battery is on fire, what is the primary objective for emergency personnel?

• A. Apply water aggressively
• B. Evacuate the area
• C. Cool the battery
• D. Contain the fire at all cost

Answer: (C)

Cooling the battery is the most effective immediate objective because lithium-ion packs heat up during a fire and can enter thermal runaway, where heat generation accelerates the reaction and can spread to neighboring cells. By applying water to absorb heat, responders slow the internal chemistry, reduce gas and pressure, and prevent re-ignition or propagation of the fire. While evacuating people and securing the area is essential for safety, and containment is important, cooling directly tackles the mechanism that keeps the fire alive. In practice, continuous cooling helps keep the pack stable long enough for emergency teams to bring the situation under control.