I bought one of these little two stroke generators for my tent trailer and it works great. It was on sale for 125.99 a few weeks ago. I hope the link works. Its from Canadian tire and is actually pretty quite too. It also has a DC outlet with cables to charge regular car batteries. It runs about 6-7 hours on a tank of fuel as well.
http://www.canadiantire.ca/browse/pr...romSearch=true