Andrew St Pierre White, a well known overlander, shows how to install the lowest possible cost auxiliary battery system in your tow vehicle. He maximizes efficiency by minimizing voltage drop with a simple Anderson plug rather than a solenoid to connect/disconnect the aux battery.
In this video he follows up with a discussion on weak points of a solenoid versus Anderson plug and advantages of a DC-DC charger.
Simple is good is my philosophy in general. And every time I have gone against that internal compass, I have regretted it....sometimes big, sometimes little. I have come to despise unneeded complexity.
Grasshopper, I don't think you would use the old conventional type solenoid switch with a DC-DC charger. Most DC-DC chargers have switching built in or a sister unit that can be installed along with the charger to handle splitting/switching. CTEK sells Smartpass 120 or 120S that is wired in with the DC-DC charger. They say: Smartpass 120S charges and supplies the service battery and equipment with 120A, separates critical equipment from non-critical equipment ensuring that radio, emergency lights and navigation systems always have power. The CTEK charger can charge Li: CTEK D250SE. REDARC DC-DC chargers can also charge Li: https://www.redarcelectronics.com/us/. REDARC
I'll check out Prose, thanks
Sweeny, DavidPoz seems interesting, at least the couple videos I watched so far.
