Much has been written about DC-DC charging for LFP. Yet there seems to be a gap.
My trailer power fuse is 40A, which seems large, as the wire at the receptacle is 14ga at best. I looked inside it and only the ground is a larger than a very narrow blade. I've seen many posts saying most trucks have 10ga wire and I want to laugh. I really don't want to run new wire, especially an additional trailer connection. Yet as is I'm not getting much.
So what charger to use? A typical 20A version seems far too large, Victron's 18A isn't much better. Red Arc has a 12A device. https://www.redarcelectronics.com/us...attery-charger
Also it seems expensive, at twice the others.
Are there other options? Am I missing something?