The Battery Act (BattG) distinguishes between:
Portable batteries: batteries and accumulators that are enclosed and can be held in your hand.
Industrial batteries: any battery intended for industrial, commercial, or agricultural use. An industrial battery can also be used in e-bikes or to drive hybrid vehicles.
Car batteries: any battery for the auto starter motor, lighting, or ignition.
Manufacturers must register a battery with its brand and battery type with the authorities (Stiftung EAR) before placing it on the market.
Learn more about the proper disposal of waste batteries and used accumulators on a general information page for battery takeback schemes.