I have three solar panels on my RV charging four deep cycle 12 volt batteries with a 2000 Watt Continuous/4000 Watt Peak Power Inverter
(Power inverter takes 12 volt DC and makes it 120 volt AC)
Paid $400 for the panels and inverter, got the batteries free from craigslist
http://www.harborfreight.com/cpi/cta...emnumber=90599
http://www.harborfreight.com/cpi/cta...emnumber=92464