I have a Cen-Tech 200W. Just got it from Harbor Freight. I don't travel but wanted to know if they did what they say. And it worked, but not long enough to do what you're trying to do. I also hooked it up to a non-car 12 volt battery. Battery 12 volts 9Ah 20h. Bought a second battery and got a 400 watt Toopow to see how it works. And it worked. More watts, more volts, more productive time. Getting better. I already had a 7 watt 18 volt solar panel and charged the batteries that way. Handy in the event of a power outage.
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