well, I believe I've got no other devices that could drain the battery. So if the low voltage protection box cuts off the dash cam charging when the battery voltage drops below 11.4V ,it shouldn't go any lower. But it did two times ,so I guess it must be faulty then, as the camera keeps charging all the time.
They sent me another kit because according to them ,the first one is faulty. What I noticed is that the fuse from the previous kit was definitely gone ,but I will be able to tell tomorrow if the low voltage protection works fine on this kit or not.
Nevertheless, I'm still conFUSEd with the fuses in the boot