Moin in the round, with our V70 II (MY2012) the clock in the station wagon always goes after by a few minutes. It looks as if the time is “smooth”, i.e. only one minute, then after a few weeks it will be two etc. Now to my guess: Can it be that when the engine starts the power supply breaks in for a short time and the clock then stops for 1-2sec.? And this accumulates then over several start processes per day just up?! To our on-board network: We have a new 12V AGM starter battery built 4 years ago. In the current situation, however, I suspect rather a waste of the auxiliary battery, which is actually supposed to stabilize the on-board grid during take-off operations. This has not been changed for 12 years. The small battery on the passenger side is meant with 12V, 10Ah and VRLA/AGM technology (Volvo part number 32238082). Now the question in the round: Am I right with my guess? Are there other reasons for “drifting away” the time? Is there any experience with this topic?