07-09-2016, 03:20 AM
I had one hooked up to a marine battery and it worked just fine. Would run for hours rather than minutes like the UPS battery. The UPS unit did eventually die, though I don't know if it was because of my hack job. I have read that the heat sinks (or something) in cheap UPS inverters aren't designed to run at full draw for more than about 20 minutes or so and when you run it for hours with a beefed up battery they overheat and die.