How harmful is a small dry cell battery?

Batteries are mainly disposable batteries, secondary batteries and car batteries. Disposable batteries include button batteries, ordinary zinc-manganese dry batteries and alkaline batteries, disposable batteries contain mercury. Secondary batteries mainly refer to rechargeable batteries, which contain heavy metal cadmium. Automobile waste batteries contain acid and heavy metal lead.

The mercury in batteries discarded in nature enters the soil or water source, and then enters the human body through crops, damaging the human kidneys. Under the action of microorganisms, inorganic mercury can be transformed into methylmercury, which gathers in the body of fish. After people consume this kind of fish, methylmercury enters into the brain cells of human beings, which makes the nervous system of human beings seriously damaged, and the heavier ones will go crazy and die. The famous Minamata disease in Japan is caused by methylmercury.

Cadmium in batteries seeps out to pollute land and water, and eventually enters the human body to damage the liver and kidneys, but also cause bone weakness, and in some cases, deformity of the skeleton. Automobile waste batteries contain acid and heavy metal lead leaked into nature can cause soil and water pollution, and ultimately harmful to the human body