It's inadvisable to leave the battery in it anyway.
Easier said than done to always keep in a fireproof container and presumably you wouldn't want several in one container or they might go off in chain reaction.
Generally fires are most likely during charging or following any damage like dropping or puncture.
I suspect a 50% charged one in stored in a cool place where nothing can accidentally bump it is a safe as it can be.
Easier said than done to always keep in a fireproof container and presumably you wouldn't want several in one container or they might go off in chain reaction.
Generally fires are most likely during charging or following any damage like dropping or puncture.
I suspect a 50% charged one in stored in a cool place where nothing can accidentally bump it is a safe as it can be.