Sennheiser BA 2015-4, Battery Pack, Battery packs for handheld and bodypack transmitters and bodypack receivers of the G2, G3 and G4 series, Package quantity: 4 pieces@+*Note on disposal:* Please check local regulations for proper disposal of discarded batteries in your country. In Germany, the following rules apply: Due to the Battery Act (BattG), you as the end user are obliged to return all used batteries and rechargeable batteries. Disposal via household waste is not permitted! Batteries and rechargeable batteries containing harmful substances are labelled with the symbol of a crossed-out dustbin and the chemical symbol (Cd = cadmium; Hg = mercury; Pb = lead) of the heavy metal that is relevant for the classification. Used batteries and rechargeable batteries can be returned free of charge to our shop, to other sales outlets for batteries or to the public waste disposal authorities (örE). For other countries, please refer to local regulations on battery disposal.