On Wed, 9 Sep 2009 14:04:06 -0700, "Calif Bill"
wrote:

Unless you are using the batteries everyday, you do not need a 45 amp panel.
A 6 amp from Harbor freight is about $200.

I believe that would be for a 12 volt battery. For a 24 volt battery
you'd need two panels in series and a 24 volt charge controller.

http://store.solar-electric.com/ss-20l.html