2 charged lead-acid batteries smaller were loaded suspiciously quickly, the charging process ran but as described on and the batteries functioned. Now you can, of course, where their available capacity is not all ... I'm assuming that they have been correctly loaded.
I then for lighter problems during the cold season loaded (without taking them out of the vehicle) my W245 70Ah battery. While here, too, the charge phase 'suspiciously' went quickly, took the whole process (incl. 6h Recond phase) around 8 hours. Since then, the B-Class starts again eiwandfrei and without Comand message about excessively low voltage. In this respect, goal achieved!
