Well the article says it's made of material that wouldn't catch fire if that's what you're specifically Wondering. Presumably smart people would be insulating

Well the article says it's made of material that wouldn't catch fire if that's what you're specifically Wondering. Presumably smart people would be insulating the battery from an external surge like a lightning strike. However in practical senses the lightning would go into the rest of the ground as the grounding wire would be bypassing the concrete.