Report on first long haul trip with the Toad.
MY OH MY, that's SO much easier!
The battery upgrade seems to have been the fix. No issues at all with the brake controller.
I do think I will put in a 12VDC splitter to power the brake controller and the wireless puck from RVi so I get data readback consistently. The tiny battery in the puck only lasts for like 4 hours.
Also not a fan of the RVi commander software. It's the equivalent of an idiot light on the dashboard. Report the voltage seen by the controller ("hey, the voltage is going low, maybe I should check the charge line when I stop next") perhaps a readout of the G sensor condition so you can judge if you need to up the sensitivity. I thought the car should brake a little more, but I would be more likely to make an adjustment if I saw the sensor data.
I'm a systems analyst in some of my job duties, think I'll reach out to RVi and suggest some updates.