Note according to the battery law

Old batteries do not belong in the household waste. You can return used batteries free of charge to our dispatch warehouse. As a consumer you are legally obliged to return used batteries.

Batteries containing pollutants are marked with a symbol consisting of a crossed-out wheeled bin and the chemical symbol (Cd, Hg or Pb) of the heavy metal that is decisive for classification as a pollutant:

battery regulation

Cd" stands for cadmium.
Hg" stands for mercury.
Pb" stands for lead.