All you really need is an inverter, which can be had for a couple hundred bucks, which will run all your gear from a simple car battery or even a small, garden tractor battery. I had one on my boat and it ran everything, including the AC unit, microwave, lights, radar, GPS Plotter, AIS system, etc...

https://www.renogy.com/700w-12v-pure-sin...HwaAqs6EALw_wcB

Good luck,

Gary cool
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PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!

K+E=W (Knowledge Plus Experience = Wisdom.)