Originally Posted by Subaru297
That would be cool to see!
As I typed my earlier response I was thinking I should have checked the voltage at the truck battery as well to see what the alternator was putting out. The truck just started though so it should have been around 14+ volts.
I watched the charging on the trailer as I came home from camping this weekend.
When I left my campsite, the batteries were at 75% SOC. When the truck was running and connected to the trailer, I saw about 12.9V on the trailer batteries, with a charge current of about 7 Amps. After about an hour of driving the I was getting about 6 Amps and just over 13V at the trailer batteries. I think the most I have ever seen when driving is about 9 Amps charging the trailer batteries.