well look at a netbook . or a small tablet pc and use a external battery and not a inverter. I have talked to people that use as netbook and a 12v 7Ah batt and spend almost 9 hours contesting. and on a 12v 17Ah deep cycle marine battery. you can go a day or 2 with a kx3 and a netbook. -- R.Neese KB3VGW