Quote Originally Posted by cookinwitdiesel
standard WFCO-9855 converter that GD seems to like
Is it 9855, the floor mount converter, or 8955, where it's built into the distrubtion panel? I'm guessing the latter. In either case, looking at options to fix that, it seems like WFCO has an 8955LiS that claims to have lithium charging ability. Progressive Dynamics makes a module designed to upgrade the 8955 with lithium ability. Mixed reviews on either choice.

Quote Originally Posted by cookinwitdiesel
I also would not expect great things from dealer installed batteries. Mine were allegedly 140 Ah batteries (2x). I saw realistically about 75-80 Ah of usage before they were at critical voltage.
I guess 75-80 out of 140 is right in line with expectations. I knew FLA batteries kinda sucked in that regard, but I didn't realize 50% was basically normal. I wish I could remember what size batteries we had on the last trailer. Could have been anything from 65 to 140, I guess. 105 kinda rings a bell, but only faintly.

Right now I'm leaning towards this battery pack:
https://www.electriccarpartscompany....-battery-packs

Good price for that capacity. Most likely overkill, but better over than under.