For lithium-ion batteries (most modern devices): • They do not contain metallic lithium. • The “lithium” is in salt form, like lithium cobalt oxide or lithium iron phosphate, and is stable in water. • So, putting water on a lithium-ion battery fire won’t cause an explosion. In fact, water can help cool it down and suppress flames. Firefighters often use water to cool EV battery fires. It helps prevent thermal runaway from spreading to nearby cells. ⚠️ But for lithium-metal batteries (less common