A battery is an electrochemical cell that contains two metal electrodes and a chemical solution that is commonly known as battery acid. The chemical solution inside of a battery, even a small disposable battery, can be poisonous or cause chemical burns if released.
People and animals, as well as the environment, may be damaged by coming into contact with chemical solutions like those found in many batteries. This is why it is extremely important for consumers to properly dispose of their used batteries.
Once a battery has died, it will need to be properly disposed of. Instead of simply throwing it into the trash bin, place the individual battery in a plastic bag or similar container. If you have more than one battery to dispose of, place each in a separate container. While a battery may no longer work, it may still have a small bit of power left. Placing it with other used batteries may cause them to spark a fire.
Many small batteries, such as alkaline batteries, are categorized as household waste and may be thrown away with the rest of the trash in their individual containers. However, other batteries, like nickel, lithium, nickel metal hydride, silver oxide, nickel-cadmium and mercuric batteries must be disposed of as hazardous waste. Most cities will either have a specific day where they will pick up this waste or a place where residents can drop their waste products off. This information can usually be found on the city's website or in the local newspaper.
Most batteries take up to 100 years -- or even longer -- to decompose. If a battery is simply thrown away, it can leak hazardous materials into the soil and water, which is detrimental to the environment, as well as to animals and people. This is why it is so important for consumers to properly dispose of their batteries and do their part in improving the environment for present and future generations.