Syphen
I have used one for quite some time now, and they work great. Here are a couple of tips. Always get one bigger than you think that you may need, they don't cost very much more, and sometimes you may want to run two small devices on it, and you will be able to do that if you don't get a really small one. Mine is a 700 watt peak/ 350 watt inverter, only cost about $40 or so. I could have gotten the next size up for only about another $15 or $20, but this one is pretty good, I can run a 19'TV on it.One other tip, is that for most things that you will run, the main draw will be right at startup, when you first turn it on. Sometimes, it beeps and will not start the device up, but if I start the engine to provide the additional amps, once the device is running, I can turn off the engine and the battery will sustain it with no problem.