Battery recycling
Battery recycling' is a name of the process of separately collecting such batteries so that they can be disposed of properly. Batteries contain metals such as lead, copper or zinc. In the form that is used in the batteries, these metals are very harmful to the environment - most are toxic. The part that cannot be extracted or re-used is dispoed in a for so that it is less harmful to the environment. For this reason, many countries have rules that say that a given percentage of all batteries must be re-cycled.