Note to the battery law:

Information on Battery Disposal

As end-user you are legally obliged to return used batteries. You can return used batteries for free to the seller Foto Bravo UG, Friedrich-Hagemann-Str. 77
33719 Bielefeld , or in the designated collection points (e.g. municipal collection sites).

The symbols shown on the batteries have the following meanings:

The symbol of the crossed out wheeled bin indicates that the battery should not be placed in municipal waste.

Note Pb = battery contains more than 0.004 percent by mass lead
Note Cd = battery contains more than 0.002 percent by mass cadmium
Note Hg = battery contains more than 0.0005 percent by mass mercury