The quick, concise answer is that while there isn't one single "magic bullet" extinguisher for all solar battery fires, **specialized fire extinguishing agents designed for lithium-ion (Li-ion) batteries are the most effective choice. Do not forget that these are not the only safety issues when dealing with batteries. The system's output may be. . This guide provides seven actionable methods for battery fire prevention, helping you protect your investment and ensure the safe operation of your solar energy storage system. The batteries are enclosed in a metal storage tool chest. I believe they explode within 2-3 seconds of being exposed to 320 degrees. . The fire destroyed 140 batteries, did structural damage to the plant, and burned seven power generation modules.