I know it's weird, but smell your battery (not too close). If the battery emits a vinegar like smell, or any strange smells, it means it's leaking which is really really bad, you must get rid of it. If not just keep it in a kevlar bag away from anything that is flammable, just in case. And when you need to charge it, do it outside on a rock.
Oh and when you are going to fly a plane with it, make sure you film it. A rc plane catching fire mid-flight will get tons of views on youtube.