Yes there a lots of power banks that put out USB power and 12VDC power and also 120VAC power, all in one battery box.? I have 2 with 120VAC output along with USB and 12VDC outlets.? They come in a verity of power levels, mine are 100 & 300W.
There are other that can power a FT817 for hours that put out USB and 12VDC.
Here is one on Amazon.? No tsure if you need 120 or 240VAC.