Hi! I opened the lid of the battery compartment and found the following (see attached photo). What happened there? Is the battery overcooked? Is there something spilled over during the installation or was the battery filled up and it is something spilled over? Had this time with my old BMW and could not make a rhyme on it. What should be done? Thank you for the help in advance! Michek P. S.: Background: With me the start/stop automatic does not work any more. In BC is considered Then this morning I got an indication that something with the battery was wrong. So I checked in the logbook and found out that the expansion of the large battery is described in detail.