Using a UPS is pretty much useless unless you have a small tank. I had a $900 unit that would run my entire tank for about 30 minutes. Not much value for $900!! A $300 unit would be a large paper weight for running anything bigger than a nano. My new plan is to run a converter from my car using an extension cord. These come in various wattages. Of course being able to park near the tank is a prerequisite
