Batteries are hazardous material. I personally prefer to cary ammunition than those evil materials. A fire in flight, at high altitudes, and remote areas, is fatal.
Fatal is also a ditching of a wide bodied aircraft.. I tried not to think about it, when in the air, although I never (till today) carried lithium batteries. It makes me nervous! I am just wondering, why this material is allowed to be carried on cargo aircraft, when it is proved that easily they can create havoc!