Today I hooked my Aillio Bullet R1 roaster to my Geneverse Homepower Two solar generator to roast instead of the usual connection to house main power. The roasts went well, the voltage appeared very stable, and my solar generator went from 96% capacity when I started to 64% capacity now as I'm cooling the roaster down after two roasts, one 9:21 and the second 13:23 and the ~30 minute initial pre-heat and ~5 minute between batch pre-heat. Capacity ended up at 63% by the time the roaster cooled off and shut down.
Looks like I have the capacity to do at least three roasts off the solar generator (battery bank) and I'll recharge it when I'm done with solar panels.