Our Cargo Trailer to Travel Trailer Conversion is just about complete. Time to check the on the outcome. Self contained, all electric travel trailer. Started with an 8' x 16' cargo trailer and added 800 watts of solar, 16.5 kWh of LiFePO4 batteries, 50 gallons of fresh water, 32" x 32" shower, dry flush toilet, lots of storage, 3,000 watt inverter, queen size bed that raises and lowers electrically, induction cook top, microwave oven, and more.