Are not there forums specializing in Tesla batteries for off-grid living? I've encountered a few that seem to promote PSW inverter only accessories meaning an RV would need an AC power supply.
Just for my edification (ignorance) how many cells are in your battery and what is the operating voltage and USABLE ampere hours specs?
What is the EER rating of your proposed refrigerator? It seems my 24 CF Viking refrigerator space is 20% occupied but the freezer is jam packed along with 2 other giant non-RV chest freezers. I have a busy vacuum sealer machine. But this is at an umbilical house. The upright freezer in the rig (24 volt) is in stasis for now. The Viking if I remember correctly has a 10.9 EER