Many years ago, I knew a guy who drove a true junker, although I have to confess that I don’t recall the make or model. I invited him for dinner during the winter, and–in addition to showing-up more than an hour late–he carried his grimy old corroded battery into my home, so that it wouldn’t be exposed to extremely low temperatures.
He claimed that he did this every night, and sometimes more than once each day, during the winter months. I offered to lend him the money for a new battery, but he said that he was fine with his remove/install routine.
I did this way back with my first car, a 1969 Beetle. I was in my 1st year of college and had no money. My car would go days between starts and in the Winter in Long Island the battery could not crank the engine. By leaving it in my 73 degree dorm room it would crank fine!
I had the same thought. I originally thought about connecting the jumper directly so the charge equalizers between the two, then rinse & repeat till just about fully charged. But I was curious if the inverter in the jumper would be able to keep charging till it was drained so the process would be shorter.
I’ll probably just pull the battery and charge it at home.
I believe that it will always leave it running after shutoff regardless of the idling, though that period may be shorter in the winter – I’d have to test. It’s an unfortunate issue with BMW.not sure if it’s been fixed in newer models.
I think the solar panel should be able to compensate for that and hopefully the parasitic draw from the dashcam, but I can live without having parking mode if not.
The panel have is a direct terminal connection which isn’t too bad in my case bc my battery is in the trunk and I can mount it on the rear deck semi permanently so I can setup and forget it.
