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agesilaus's avatar
agesilaus
Explorer III
Oct 18, 2018

Solar Parts list

OK I'm working on my solar parts list for my Arctic Fox 25y. So far this is what I have:

Renology 100 W panel polycrystalline X 4
Trojan T105 6V Battery X 2
Blue Sea Systems 300 Amp m-Series Battery Switches
Victron SmartSolar MPPT 100/50 Solar
RENOGY 5 Pair MC4
Signstek MC3 MC4 Solar Crimping Tool
Battery temp?

I've already bought the 6V batteries and have them temporarily installed while I'm waiting for the battery boxes to get here.

I plan to install the 4 100W panels and I also have one of those suitcase portable 100 panels (actually 2 50W I think) that I'd like to add. I checked the output of that panel and it was 11.5 at 5 PM so I assume it is 12V in full sun.

Since the panels are different types and the roof will probably get varying amounts of shade I assume series is not a good idea.

I thought about a Morningstar controller but the Victron will handle 100V and I'll probably be paralleling 5 panels. There are some comments that seem to say that you need 2 Morningstars so there would be any cost saving and the Victron is MPPT.

Oddly the Victron 30a and the 50a are the same price on Amazon right now.


What else am I going to need, a battery temp probe? The Victron uses a app to connect to Android phone I think so I won't need a remote monitor?
  • your 4 x 5A panels in parallel is only 20A, that is not near 50A
    4 in series that's 5A @ 70v! 2 pairs of 2 is 36v @ 5A each pair or 36v @ 10A combined.

    hook the portable directly to the battery as designed, when needed.
  • red31 wrote:
    if ya parallel the panels ya don't need the high voltage controller!!!

    in parallel the the amps are additive the voltage stays the same, due to summer heat locally, I'd do series pairs.


    Oh yeah so maybe 50a would not be enough. I didn't think I could do series/parallel with different panel types in the system.
  • if ya parallel the panels ya don't need the high voltage controller!!!

    in parallel the the amps are additive the voltage stays the same, due to summer heat locally, I'd do series pairs.
  • “so I assume it is 12V in full sun.” It isn’t and it shouldn’t be 12 volts. If it was a 12 volt panel it wouldn’t push anything into the batteries. Panels should produce 17 volts+.

    What did your energy survey times 1.5 indicate was needed?

    Am not confident you know much about RV solar.
  • Your portable should have put out way more than 11.5 volts unless it was totally in a real dark shady area.
    My 12v 100 watt panels are still registering 18v at dusk.

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