In area of batteries, Xantrex also has new line of lithium batteries, including a 51 VDC option I find interesting. They previously stated there was little need for RV house voltage other than 12 VDC, yet they now offer a higher-voltage battery. Also of interest is that Xantrex does not offer a 48-VDC (nominal voltage) inverter/charger yet. I personally think it’s just a matter of time, as indicated by this 51 VDC battery option.
http://www.xantrex.com/documents/lit...asheet2019.pdf