Hello, when using my fiancée’s Kia Picanto (built in 2009), the steering was rather cumbersome at first. The workshop now said that the power steering is not broken, but that this would be related to the battery, which is probably rather weak. This Bosch S4 with 40Ah (330A) was last replaced about 2 years ago. Now I have hung the battery on my battery charger in the built-in condition. Now it shows that the charging beam as well as the voltages For example, the voltage rises to 14.0 V within 90 seconds, then 14.5 V is displayed to the fraction of a second before it falls to 13.5 V. On this voltage it then stays 30 seconds and then drops to 12.5 V again and is jumpy again at 13.4 V. What are your suggestions? Does the battery solve the problem in your opinion or is it just a first step?