Its just a remote battery.

In a pinch I've used two sets of jumper cables to get from behind a car, up to the battery. Be VERY careful.

My jump box must detect 3v or it disabled the box. It’s lithium and as I understand it there is potential to get them to hot feeding an internally shorter batter or some other dead short situations. If you are industrious you’ll figure a workaround I use a 9 volt battery to feed it a bit of current to unlock the safety. I cannot imagine rolling up windows would equate to a dead short.

I would say the fancier the unit the more likely it’ll need a workaround.