The service manager told me that the ISG is charged by an element inside the battery. He was sure that after trickle charging the battery overnight this element would be charged again and the ISG would work. It doesn't. So he said I need a new battery , which I am not going to pay €300 at KIA for the ISG to work. What puzzles me is that I have no problem with the battery but this element inside is apparently broken.Did they top it up or just charge it.