How many fires did it take to learn lessons about dispensing, storing and carrying petrol? We’re quite happy with ships have huge reserves of flammable liquids

How many fires did it take to learn lessons about dispensing, storing and carrying petrol? We’re quite happy with ships have huge reserves of flammable liquids (“fuel”) so why are batteries such a concern? Gas (methane, LPG, etc) doesn’t get this level of attention so why do batteries?