Has anyone had such a problem before? (Please read to the end..) Typically in winter with snowfall on Monday morning after the weekend was 2 days break, the battery is completely empty, i.e. at about 6 volts, it does not even react to the unlocking. So it was last year 2, 3, times – for the Volvo dealer this was a clear thing, a new battery must have been. So I was on the road last year. Now the battery is exactly one year old and hardly was 4 weeks ago. n the first snow, I had the problem again. So I installed a measuring resistance (10 milli-Ohm) between the battery pole and terminal, so that I can disconnect the battery without interruption after turning off the vehicle and then measure the current. Of course, the terminal is again properly installed before the next trip! What do I measure now after the parking of the vehicle? I would say nothing abnormal! It takes a couple of minutes until the power consumption rings off properly, But it does it finally up to near 0. With the coarse measuring devices I can assume a noise well below 10 mA, but no more. The battery voltage is also OK, so at 12,8 V permanent. But then! I have the sporadic case that someone pulls a horrendous current! Just like now, Sunday afternoon, snowfall: The battery still has 6 V and I measure 550 mA! As I said, Friday evening was still less than 10 mA, a forgotten lamp is eliminated. Since I last year when the first appearance had already this behavior, I commissioned the Volvo dealer to carry out a corresponding troubleshooting. Of course without finding out (but I paid them already) – The battery was declared defective!