Old batteries do not belong in household waste. You can return used batteries free of charge at our shipping depot. As a consumer, you are legally obliged to return used batteries.
 
Contaminated batteries are marked with a crossed-out garbagecan symbol and the chemical symbol (Cd, Hg or Pb) for their classification:

Batteriegesetz 
  1. „Cd" = Cadmium.
  2. „Hg" = Quecksilber.
  3. „Pb" = Blei.