New to this stuff...will this work in my RV?

Hello all. I have an RV with a Kyocera 130 watt panel on it.
It’s run thru a Blue-Sky MPPT Solar Boost 2512iX charge controller.
I'd like to add another panel, a Unisolar 124 panel. I'd like to tie the two panels together on the roof and use the common wire running through the roof and walls to the same charge controller and then to the same battery bank (2 group 29s). I believe I can do this with another KC-130 panel because they are the same voltage, watts, and amps. What will happen if I mix the two panels, KC-130 and one Unisolar 124? They are different voltages, amps, and watts. How do the different volts, amps, and watts mix?
They will be mounted at different locations on the roof and will often see different light unless the sun is straight up.
Say I get 18 volts and 6 amps from the KC while at the same time the Uni is producing 25 volts and 3 amps, what happens when I connect the + from the KC to the + of the Uni and the negatives together to be run to the charge controller?
Please explain why this will or won't work. If you can provide details why so I can also learn.
If I have to use two of the same panels like 2 KC-130, what happens when one is making 18 volts 6 amps and the other is 16 volts at 2 amps?
Thanks confused.

KC-130 http://store.solar-electric.com/kc-120.html
BlueSky http://www.blueskyenergyinc.com/pdf/BSE%202512i%20Datasheet1.pdf
Unisolar 124 watt panel
http://www.advancedgreentech.com/Module%20ES%20124%20spc.pdf

Comments

  • Windsun
    Windsun Solar Expert Posts: 1,164 ✭✭
    Re: New to this stuff...will this work in my RV?

    I don't recommend it. Yes, it will work - sort of. But you will not get full power out of the 124 if hooked up to the same controller as the lower voltage panel. Mixing a 12 and 24 volt panel you would end up with about the equal of 2 12 volt panels + about 10-15%.

    And that controller will not handle the voltage, so you would need a new controller.

    Also, the 124 is not only a very hard to find, it also has to ship freight, which is very expensive for a single panel. So unless you already have one, I would not go that way.
  • System2
    System2 Posts: 6,290 admin
    Re: New to this stuff...will this work in my RV?

    Will that charge controller control dusk to dawn light control?

    I too was wondering if you can mix panels. I want to upgrade from 15 watt panels to something between 80 to 130 watts.

    tsp