Modern cars are becoming more reliable and have higher performance, but at the same time, the number of electrical consumers in cars is growing. Until the 1980s, a frequent cause of breakdowns was a flat tyre or a mechanical defect. However, over the past years, car battery failures have become the most common reason for an involuntary stop. Today, batteries are now four times more commonly the reason for a breakdown than in the middle of the 1990s. The reasons for this are often poor battery care or failure to replace the battery in good time. Therefore: Drivers can only remain mobile with good battery care.