In the midwest, April 1st marks the opening of the summer drive-in movie season. Our local drive-ins broadcast the movie soundtrack on FM. So, in a typical night in a typical car, you will drive in to the lot, park, pop the hatch, kill the inside lights, turn the key backwards to "Accy" mode and run the radio through 2 movies + intermission or about 4+ hours.

If you fail to turn the key to "Accy" mode, the dash lights stay lit, and you are almost guaranteed to need a jump start by the end of the second feature.

Any thoughts or speculation if the FEH would be able to handle this? Is there a "accy" key position that will run only the 12V battery?

If I have the radio on, then the NAV display will have to stay on, won't it? I wonder how much extra juice that will take.