Good thing you got a 2008 Heartland, that was the last year they were an independent and before their quality went to total poop after Thor took them over.
My Blog - The Journey of the Redneck Express CBChannel 17Redneck Express '1992Dodge W-250 "Dually" Power Wagon - Club Cab Long Bed 4x4 V8 5.9L gashog w/4.10 Geared axles '1974KIT Kamper 1106 - 11' Slide-in '2006Heartland BigHorn 3400RL
Test run with LFP in a heated compartment..I decided to go 100% LFP in my TC with a test run with one under the sink where it is heated..Fits fine,infact,if I took out the plastic battery box it would easily hold two lithium batteries in a heated space..I may do that but for now a temporary trial with a thermometer is in order..Such an easy fix for low temps and LFP..LOL
I disconnected the shore power and ran a cord to a power strip not to be charging off my ancient house converter...