I bought it specifically because of the previous review that the fridge and the window unit worked without any problems, while I can start both even if I turn them on separately, both devices are low-power, I must me get matching terminals for 6 GA cables but nothing gets hot 2 new Exide 31 115AH batteries fully charged, took 2 days to charge, voltage during operation well above 24V. Will update after terminals installed, maybe the problem became not fixed yet. I'm pretty sure this thing has no switching capacity, maybe a solid inverter but not for real loads. UPDATE - So the terminals are soldered, I didn't think that would fix the problem, but even with the terminals soldered the batteries still have a good, decent charge. This doesn't hardly work in tandem with an air conditioner and a mini fridge you have to plug in. The fridge then turns on the AC fan and when things pick up speed the AC compressor so I'm including a small heater as a next test a switch for 750 watts and 1500 watts. I won't even think about lighting it up, even at a low 750, either I've got a bad one or the thing is bullshit. We'll see how the return goes. TO UPDATE. My replacement arrived today, the inverter will now run my small heater at HIGH output and consume 1400 watts continuously, it will now run both the air conditioner and mini fridge at the same time, no problem, I've paid for that now. I am happy. Be sure to seriously load these items when you receive them for inspection.