Review on 🔌 Imoli 1200W Power Inverter DC 12V to 110V AC Converter for Automotive use - Modified Sine Wave, 3.1A USB, 2 AC Outlets with LCD Digital Display (2400W Peak) by Paul Rosemark

If I couldn't find a better one, I'd probably leave this one. The device reads 1200 watts but does not show peak or continuous power. In my testing, it supported two 350W heaters, but turned off when the third was turned on. So it supports 700W continuous power but not 1050W continuous power. If you're looking for a good 600 watts of continuous power and 1200 watts of peak power, this is probably very good for you. Remember that it takes many amps (100) at 14 volts to produce 1400 watts and you can't get that from an outlet in a car. To be honest I used an 895 amp starting battery with a 50 amp charger. to ensure voltage stability during the test and connected directly to the battery. The included cables are a bit meager for the 90 amps required for 1200 watts, so I went with larger cables with no added capacity. Most units I've seen were labeled peak and advertised as continuous at 1/2 peak. This one definitely exceeds that standard.