I bought a 500w inverter from Lowe's for 39.95. It has two AC outlets, a cigarette outlet and a usb port. Brand is Stanley. We just use it to charge small things, like phones. It has clamps to hook onto the 12v battery and for now I just hook it up for a few hours at a time as needed. (My batteries are pretty easy to access in the cabin.) Someday I'll permanently wire it to the battery and mount it somewhere. My 12v batteries (2) charge off the engine's alternator and so far haven't had any issues with power.
Honestly, I saw some inverters that cost huge $$ and I'm not really sure what's the difference. This thing has worked great for us.
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