The only solar panels I have seen are the ones that were handed out for free at shows or a raffle or door prizes. They can be used as a trickle charges. If you are looking for a second battery, go to a battery rebuilder's shop and buy a rebuilt one for $50-$60. From: tcb-bounce@xxxxxxxxxxxxx [mailto:tcb-bounce@xxxxxxxxxxxxx] On Behalf Of kelly dosch Sent: Friday, January 21, 2011 3:19 PM To: tcb@xxxxxxxxxxxxx Subject: [tcb] Question About Dual Battery Set-Up And Solar Panels Hello. I need to get a deep cycle RV battery for my Westfalia Campmobile. I'm seeing about a gazillion types with vastly varying prices. ($120-$600!) Is it really all that complicated or can I just get the cheap Sears Marine/RV battery? ($120) Also, I have noticed a lot of Westies with solar panels. Why? If they have a campsite with electrical hook-up the battery can charge itself. If not, the alternator will charge it during a short drive. I don't get it. Why would anybody want to drop $400 for a solar panel? (Tell me it isn't just to be "green".) Thanks for your time,... )< (- (_ (_ `(