Thanks everyone for the great input!
I got a reply back from Battery Tender. He said that for the dual batteries I would need two (2) 15w systems, one for each battery.
If they're hooked up in parallel, the combined total is still 12v. They are hard wired together and I can't see that by feeding each battery individually that it would be any different than just hooking to one with a slightly higher wattage single solar panel.
Am I missing something?
Thanks and I hope you all have a great weekend...
