What is the physical hazard of batteries?

Batteries normally have some type of internal acidic solution, will burn human tissue

and clothing.

Batteries can short internally/externally and explode creating a hazard.

Batteries can be overloaded and explode creating a hazard.

Batteries when shorted will immediately bring the Batteries full amperage complement to bare at the lowest residence point ie: Will get very hot, burn though the shorted area, cause a fire.... unpredictable results and explode creating a hazard!

Batteries will erode the stomach lining if swallowed.

Batteries when swallowed are then immediately shorted and will bring the Batteries full amperage complement to bare at the lowest residence point and explode creating a hazard before being dissolved by the stomach acid and mixing with the battery's acid producing unpredictable results. Hopefully the Battery may have depleted upon consumption before explosion.