Just out of curiosity, Does anyone know how often a fire extinguisher is needed or used in the cabin? Statistics?

Any experiences with anyone having to discharge a FE in the cabin?

How serious a risk is a cabin fire?

Let's say, compared to an engine compartment fire, or, anything else?

Any lithium battery or panel experiences aloft?

I do know of folks who got the crap scared out of them with a capacitor popping, but that did not result in a fire, only some fouled clothing.