Lithium-ion batteries are everywhere in today’s workplaces. They power the tools we use, the equipment we rely on, and the vehicles that move materials and people. Because they are efficient and compact, they’ve become the standard across industrial, construction, and transportation environments. But with those benefits come risks. When lithium-ion batteries fail, they can release large amounts of energy very quickly. That can lead to fires, explosions, and the release of toxic gases. These incidents can develop rapidly and, in some cases, without much warning. The goal of this course is to help you understand how lithium-ion batteries work, what can go wrong, and most importantly, what you can do to stay safe.