Some quick additions to the earlier solar post.
In the following pics, you can see our temporary charge controller. This was a fun experiment when we first started learning about solar power and the components that go along with it. The setup we have has been providing steady light from a 13w CFL and a small fan with power during the night.
7amp charge controller that is rated for 7 15W panels, purchased from northern tool. Currently we only run 2 panels for a total of 30W. Convenient that it was small enough to bolt into a standard electrical box.
Here is one of the batteries. We had two dead car batteries laying around in the garage waiting to be recycled when I found out that Tractor Supply would take the cores and refund some $$$ of new batteries. Purchased two Stowaway 12V deep cycles. Each is 105 amp hours