I run my 26ft Travel Trailer 100% off-grid using Humsienk 12v 310ah batteries that are insanely affordable. I have 3.2 kW of solar on the roof of my RV and a 3 kW inverter to run everything easily. ►Humsienk Batteries: https://www.humsienk.com/products/humsienk-12v-314ah-mini-lifepo4-battery?ref=mms&variant=51704235655486 ►3 kW Off-Grid Inverter: https://signaturesolar.com/eg4-3kw-off-grid-inverter-3000ehv-48-3000w?ref=SaJS3dc86BnakK ►RV Solar Roof Rack: https://www.monument-solar.com/?aff=4