Hello, yesterday I had my battery tested at ATU … The year before my battery still had 76% start power and they told me the power was completely sufficient. Well yesterday, about a year later, my battery had only 63% and the rather not friendly ATU employee only said ‘TOT’ … how dead, I asked, asked for an explanation. However, this explanation stayed out, one wanted or could not explain why a battery with 63% would be unusable. Well, thank you, just for the actually only planned oil change now comes now also a battery with .. in addition then also also a cracked wedge belt – (together 210EUR) … Anyway then I decided for the most expensive battery, a VARTA, one wants to go on the safe side and never knows at no-name products just what one gets at the end for a quality. Well, also brands are often me what they have been to me. Maybe I have had this car battery tested then, still thanks to the ATU and the expression says; voltage 12,70V Star power 82% battery good 470A should have found me at the end of the 870A.