Hello, short question to the experts: Since after short distance operation on my Voyager 1 week ago once again made the battery sluggish, I have just installed a digital votmeter. Now my question would be, from which volt number I come without consumers in the area, where a charging would soon be installed again? Unfortunately also the stationary heating does not switch off in critical condition, so that the car is warm early, but no longer starts! 2 Question: How is this with the XC 90, is the T echnik there so far that he does not turn on or off consumers like pre-heater in case of weak battery? Is there a message in the display? Thank you for your help in advance. Torsten