Found a handy USB/120V device

$39.99 at best buy

Replaceable 15A glass audio type fuse

 

That thing is going to be pretty bulky, at least for me. Plus, you're still limited to the plug's capacity.

Just seems a little extreme for 160 peak watts. What wonder what RMS would be.

 

Actually it fits in your hand. On my 2009 sr5 I only have one 12v port beside the cig lighter, and I also do not use a cell phone. I do have a small digital camera, and I can recharge it's battery via a usb port. It is quiet in operation. It might be louder to some, but since my tires sing loudly I cannot hear it in operation. Go to a best buy and you'll find this device near the computer cable selection. I think the RMS is 100 watts.