Since I was replying in another thread and had to get some items from my truck. I did a little testing.
When it was first towed and died (HV pack unavailable) I had tried a NOCO GBX75 jump starter on the wires near the trailer hitch. It did not work. However, a larger CAT jump starter did...
For those that take trailers on trips and have not yet tried the new towing mode I think you will be pleasantly surprised. At least I was. The range estimates and trip planning are now useful for towing. Whereas before I felt like I had to do all the calculations in my head. Granted I mostly use...