I drive a 95 astro van and am looking into getting a solar setup for the roof of my van. I'm not really intending to get mpg, though that would be a plus. It would be my first solar/ battery project so I figured I would run it by some more experienced people. The roof rack is 68x44.5 inside dimensions.
Solar Panel(s) Considerations
2 100 watt plus solar controller (add an extra one)
265 watt 65x40
Battery
120 ah marine battery walmart brand.
1. Mount solar panels to roof using roof rack as base.
2. Run wiring through 3rd brake light housing to the inside of the van to the solar controller (included with kit)
3. connect charger to battery(ies)
Q1: I'm considering trying to do a dual setup on the batteries so I can discharge one then switch and use the other while charging the other one. How hard would this be? Is it as easy as switch batteries or am I missing something?
Q2:does the controller in the 2x 100watt kit charge the battery(ies) or do I need a seperate charger?
Q3: I wouldn't leave my starting battery in place and connect to one of the batteries in back, alternator in place. That would be fine correct?
Q4: I would like to make an aero cap sort of thing for the roof of the van to hopefully decrease the drag I would get from the panels. I was thinking I would attempt building it like changzuki
did his body for the centurion. keeping in mind the teardrop shape should I just go for a flat top or make it an angled top? Would it be worth trying to angle the panel(s) (I understand for max power I would have to try and park facing with them facing the sun) and top or not worth the effort?
Q5: Lead acid batteries need venting for while they are charging correct? What type doesn't need venting?
Q6: The reviews for the ebay solar panel are all positive, I would rather go with ebay ones because of cost. Has anyone had any problems with ebay solar panels? (maybe not necessarily the ones I linked)
I haven't bought anything yet, so any suggestions would be appreciated. I am on a slightly tight budget, tho I can just wait for more money if its worth buying more expensive.
Thanks, Matt.