A phenomenal solution brought together by tech experts. I purchased the Dela Pro, two extra batteries, the AC unit and the 400W solar panel. These will replace the solar setup in my 2020 RV. Why? Because they are smarter, mobile, can handle multiple charges sources at once, I can use a EV charge station and more. The app works incredibly well! The only thing I'm missing is the generator. It's not very large as generators go and I have two others but it does something the others do not. It turns itself on when the batteries hit a certain percentage of charge and turns off when it's done. Amazing technology. I'm replacing the panels on the RV roof with 400W EcoFlow panels in a frame, running the charge cables to the inside where I have the current batteries and MPPT controller and charge them that way. Are they expensive per kWh? Yes. Are they worth it? Absolutely.