Batteries are made of different materials. Those materials are acid, lead, nickel, lithium, cadmium, alkaline, mercury, and nickel metal hydride. Types of Nickel-cadmium (NiCd) rechargeable batteries, Nickel Metal Hydride (NiMH) or Lithium Ion (Li-Ion) batteries for laptops and those used for electric cars, Button cell batteries for hearing aids, small toys, and watches, contain silver and mercury, Small Sealed Lead Acid (SSLA/Pb) power such devices as mobility scooters, fire emergency tools, UPS back-up systems, hospital equipment and exit signs and Lead acid batteries used in automotive applications.
Most of those materials are environmentally dangerous, when batteries are not properly disposed of the casing can disintegrate, and the toxic chemicals within can leach into the surrounding environment. The leaking material can contaminate the soil and water, and some of the elements can accumulate in wildlife and humans.
Environmentally Friendly Batteries:
Consider those batteries that are rechargeable, last longer in the long run, and are less costly than last year's. Also, those one time batteries will damage your equipment if it gets leaking in a less time frame. Rechargeable batteries could last between 2 to 7 years. Rechargeable cordless phone batteries could last 1 to 2 years.
