only four stars because i haven't used it. I bought it for about $40 and was planning on installing it when mu 1000 Go Power Pure Sine Wave One was blowing black smoke and sparks in ten years or so. then i found that the old one worked fine when i attached the chewed wire to the battery. BUT I have to say that this is a compact, lightweight device that is really great for camping. Most electronics don't require a pure sine wave to work well. I camp in cars with LED lights but if I wanted more power this would be it as watching movies or working in the car isn't great even with a half dozen triple watt laptop batteries. With a couple of golf cart batteries and a small solar panel, you can camp unlimited with video and internet.
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