Ok let me start off by saying I am sorry if someone has posted this solution already. But I was reading this thread and was wondering why not just use a Gel cell type battery like a optima or Hawker? They are very high in reserve/CA power and can be discharged flat and be brought back to life. They take like freaking 2 whole days on the charger at work to bring them back from the dead. So I don't think a solar charger is ever going to fry the gel battery. Would make this work with just a panel and a gel battery. Also some power savers I thought of along the way was going with the new automotive LED type lights that plug in to existing plugs. What do you guys think?
15 Watt, 12 Volt Solar Panel