OK, finally had to test it. We lost the only outlet that we were plugged into when I demoed a wall for a new garage door. It use to be a garage door before someone walled it in to put a entry door. Great two+ car garage now.
Anyway, I turned on the inverter and ground our coffee beans and then fired up the coffee maker. It brews into a carafe, so no warming element. Everything worked great. It was fun the watch consumption on the Victron BMS on the phone. I still need to check the MW. Still just busy as crap. We settle in 8 days.