Finally my PMP seems to be working ok, I have set it to 36 hours so will probably find out Sunday if it powers the camera off ok but now I have a question. My PMP is set to 11.8v, I have noticed twice now that I have unlocked my car and got into it, shortly after the Blackvue DR550 says it is shutting down. If I start the ignition then it turns on again. I was wondering if perhaps the voltage of the battery dips below 11.8v when unlocking it and so the PMP shuts the camera down? My concern is when I unlock my car just to get something out of it if the camera turns off and I don't drive anywhere it will remain off. Anyone noticed similar and does it sound like this is what is happening?