would be laughed if we were not better together than bosch and co. since I can’t answer that you give off your volvo and we don’t want to spam the other thread unnecessarily, I’m going to start a new way by opening a thread for you so, err modem, then tell you a little more about your problem or what was done by the specialists. can’t be that you need every few weeks a new battery… let’s start, I quote from the wide internet to determine the causer: Here’s the explanation: Take mass pole from the battery and switch between battery terminal and Batt.Pol an amperemeter. Choose suitable measuring range (approx. 100mA), and wait about 15 minutes. Read the multimeter display and pull the fuses gradually. When the power is secured, the problem lies. Rest current should not exceed 50mA at your car in the normal case!