A Fire Extinguisher Ball is a lightweight, automatic fire-suppressing device designed to quickly put out small fires—especially when no one is around to operate a fire extinguisher manually. ✅ What it is It’s a round ball (usually made of foam with a protective casing) filled with a dry chemical powder—commonly monoammonium phosphate (ABC powder). 🔥 How it works There are two main ways it activates: 1️⃣ Throw it or roll it into the fire → After 3–10 seconds of direct flame contact, it explodes