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07-27-2018, 03:03 PM
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#1
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Senior Member
Brand: Thor Motor Coach
Model: Challenger 37TB
State: Pennsylvania
Posts: 412
THOR #4486
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Recommendation on a basic solar kit
Does anyone have a recommendation on a complete basic solar kit with maybe no more than two or three panels? My goal is to be able to boondock for no more than one night at a time between driving to the next destination. I assume two panels would be able to keep the house batteries charged (assuming the sun is cooperating) as the only thing I need to keep running while boondocking is the residential refrigerator running off the inverter/house batteries. Looking for a complete kit with controller, panels, cables and whatever else I would need to complete an install, aside from basics like screws, lap sealant, etc.
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Tom and Lisa
Pennsylvania
2015 Challenger 37TB
2015 Ford Taurus toad
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07-27-2018, 03:21 PM
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#2
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I Think We're Lost!
Brand: Still Looking
Model: Tiffin Wayfarer 24 BW
State: New York
Posts: 22,195
THOR #8860
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If you take a peek at Amazon...
Renogy offers a 300 watt, 3 panel complete kit.
They can configure it with several different controllers, so the prices will vary...
__________________
"What: me worry?"
Good Sam Member 843599689
Current coach: Tiffin Wayfarer 24 BW
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07-27-2018, 03:25 PM
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#3
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Senior Member
Brand: Thor Motor Coach
Model: Hurricane 35C
State: South Dakota
Posts: 1,132
THOR #3761
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Before answering, how many batteries and what kind of batteries are being charged? That will determine what kind of system you should get for efficiently charging your batteries.
__________________
John
2016 Thor Hurricane 35C with pups Piper and Annabelle
2013 Ford Fiesta toad
FMCA - F457085
Blog - https://traversity.us
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07-27-2018, 03:31 PM
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#4
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Senior Member
Brand: Thor Motor Coach
Model: Challenger 37TB
State: Pennsylvania
Posts: 412
THOR #4486
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jpmihalk- Currently on the 2015 Challenger are two six volt lead acid but would like to add two more once the current two need replacing.
__________________
Tom and Lisa
Pennsylvania
2015 Challenger 37TB
2015 Ford Taurus toad
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07-27-2018, 03:40 PM
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#5
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Senior Member
Brand: Thor Motor Coach
Model: Hurricane 35C
State: South Dakota
Posts: 1,132
THOR #3761
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I would say that is a good call since that would double your boondocking hours as well as the help the life of the batteries as they won't need to be drained down as far every night.
We have a 400W Renogy kit installed for our 4 AGM 12V Interstate batteries. We boondock often and never worry about running out of charge overnight, let alone over a whole weekend. Of course, we still need to run the generator for AC and the microwave. That may be an upgrade for someday... a larger inverter to add the microwave circuit to.
For your situation, don't plan too small. a 400W kit seems to be just about right for what you are planning to do. You don't need an MPPT controller so you can get the PWM controller (less expensive) if you don't plan to add to the solar setup at a later time.
__________________
John
2016 Thor Hurricane 35C with pups Piper and Annabelle
2013 Ford Fiesta toad
FMCA - F457085
Blog - https://traversity.us
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07-27-2018, 03:45 PM
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#6
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I Think We're Lost!
Brand: Still Looking
Model: Tiffin Wayfarer 24 BW
State: New York
Posts: 22,195
THOR #8860
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JPM,
I assume that there might be some sort of functional advantage; in using an MPPT controller??
Can you explain what it might be?
__________________
"What: me worry?"
Good Sam Member 843599689
Current coach: Tiffin Wayfarer 24 BW
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07-27-2018, 03:47 PM
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#7
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Senior Member
Brand: Thor Motor Coach
Model: Challenger 37TB
State: Pennsylvania
Posts: 412
THOR #4486
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jpmihalk- That is exactly the same kit (400W) I have been looking at on Amazon. Thanks for the recommendation.
__________________
Tom and Lisa
Pennsylvania
2015 Challenger 37TB
2015 Ford Taurus toad
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07-27-2018, 03:55 PM
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#8
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Senior Member
Brand: Thor Motor Coach
Model: Hurricane 35C
State: South Dakota
Posts: 1,132
THOR #3761
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The MPPT controllers generally do have more flexibility in their ability to manage charging in different circumstances. MPPT controllers can take excess voltage and convert it into amps for charging. They tend to be more efficient with less loss. PWM controllers tend to be ONLY for 12V systems (even 2 6V batteries are seen as individual 12V units) where MPPT controllers can handle 24V and 36V systems. PWM controllers are currently limited to no more than 60 amps, MPPT can go higher.
PWM controllers are much simpler where MPPT controllers are complex in terms of configuration and need to be told what kind of batteries and how many volts, etc. PWM can be configured for a type of battery at most (SLA, AGM, etc.) to set the cycle voltages for each step of the charging cycle.
PWM controllers are usually less than half of the cost of MPPT controllers, but once you get over a certain number of panels/volts an MPPT controller is your only choice.
__________________
John
2016 Thor Hurricane 35C with pups Piper and Annabelle
2013 Ford Fiesta toad
FMCA - F457085
Blog - https://traversity.us
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07-27-2018, 03:57 PM
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#9
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Senior Member
Brand: Thor Motor Coach
Model: Hurricane 35C
State: South Dakota
Posts: 1,132
THOR #3761
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Recommendation on a basic solar kit
Quote:
Originally Posted by schreinertms
jpmihalk- That is exactly the same kit (400W) I have been looking at on Amazon. Thanks for the recommendation.
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Excellent! Now you just need to figure out where you want to mount them and where to run the cables to/through and where to put the controller. Use plenty of Dicor on your roof mounts to seal the brackets and tack down the wiring and you will be set.
Here is our roof (taken from my drone) leaving room for more panels.
__________________
John
2016 Thor Hurricane 35C with pups Piper and Annabelle
2013 Ford Fiesta toad
FMCA - F457085
Blog - https://traversity.us
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07-27-2018, 04:08 PM
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#10
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I Think We're Lost!
Brand: Still Looking
Model: Tiffin Wayfarer 24 BW
State: New York
Posts: 22,195
THOR #8860
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Thanks!
__________________
"What: me worry?"
Good Sam Member 843599689
Current coach: Tiffin Wayfarer 24 BW
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07-27-2018, 05:12 PM
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#11
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Junior Member
Brand: Thor Motor Coach
State: Utah
Posts: 12
THOR #12508
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Adding Solar to 2018 Thor Quantum LF31
Can someone help me understand what I would need to add to my "solar ready" class C? I have the Go Power Connector on the roof that feeds 10 wire down to the WFCO power center. I thought the wire was supposed to go the the battery bank but it definitely terminates at the power center. I also have an Eaton True Sine Wave Inverter, [ATTACH]
[/ATTACH]1800W.
Where to I start?
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07-27-2018, 05:31 PM
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#12
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Senior Member
Brand: Thor Motor Coach
Model: Thor Tuscany 40DX
State: Colorado
Posts: 121
THOR #5043
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Lets see. My residential unit draws 108 watts continuously. that takes about 10 amps out of the 12V batteries. So with 24 hours required that takes 240 amp hours out of the batteries. But the sun only shines at full strength for say 8 hours at most a day. Thus you need around 30 amps for the solar to provide enough to bring the batteries back. You have other loads and the efficiency of the batteries in charging to account for. I have 4 180 watt panels (720 watts) and a 40 amp MPPT charge controller that will put out a bit more than the 30 amps required. Save your money, a small starter solar farm will not come close to meeting your needs. Your solar farm may be better or worse?
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07-27-2018, 05:59 PM
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#13
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Senior Member
Brand: Thor Motor Coach
State: Georgia
Posts: 2,585
THOR #4735
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it seems as though an investment in Solar would not be a big deal for just an ‘overnight’ every-now-and-then - your generator is perfectly capable of recharging your batteries, and probably wouldn’t require more 30mins twice overnight, if that, or maybe just once right before bedtime...easy
__________________
the Turners...
two Campers, two Electric cars
former diesel pusher traveler
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07-27-2018, 06:48 PM
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#14
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I Think We're Lost!
Brand: Still Looking
Model: Tiffin Wayfarer 24 BW
State: New York
Posts: 22,195
THOR #8860
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I'd rather not have to run the generator. The V-10 up front, is always thirsty for all of the fuel that it can get!
__________________
"What: me worry?"
Good Sam Member 843599689
Current coach: Tiffin Wayfarer 24 BW
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07-27-2018, 07:16 PM
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#15
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Senior Member
Brand: Thor Motor Coach
State: Georgia
Posts: 2,585
THOR #4735
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right, but it would probably take you 3 to 5 years of running the generator ‘every-now-and-then’ to offset the great up-front costs of solar versus the little fuel the generator uses... it is very efficient, and you’ve already paid for it - so make use if it before you put more money into other things that might not have the net-effect you are thinking they do. It’s not the magic pill many assume.
I have both, and speak from experience
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07-27-2018, 07:53 PM
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#16
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Senior Member
Brand: Thor Motor Coach
Model: Hurricane 35C
State: South Dakota
Posts: 1,132
THOR #3761
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I agree with TurnerFam, it is worth it in the long run.
__________________
John
2016 Thor Hurricane 35C with pups Piper and Annabelle
2013 Ford Fiesta toad
FMCA - F457085
Blog - https://traversity.us
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07-27-2018, 10:00 PM
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#17
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Senior Member
Brand: Thor Motor Coach
Model: 2017 Axis 25.4
State: Arkansas
Posts: 2,669
THOR #12231
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I have been looking into the same thing you are. Right now I just do a night or two dry camping and some "all day" picnics on the weekends (Mtn biking). But since its hot im running the Genny during the day for the AC so it will charge my battery’s fine for the nighttime use.
So it makes it hard to justify purchasing solar right now. Solar is something I just "want" and don’t "need" right now (but we are hoping next year I can work on the road for a couple of months and we will appreciate having the solar installed already).
Im looking at TWO 175 watt (350 total) solar panels ("Newpowa 175 watt" on Amazon). They are just a little larger than the 100 wants plus I would only have to drill holes for TWO panels VS 3 (or 4). I was going to install one on the front part and one on the tail that way if im parked with some trees around hopefully one will have full sun (This way In can purposely park the front of the RV in full shade to keep rig cooler in summer).
I like Renogy Rover 40 MPPT controller. That way I can install one more panel down the road and I think the MPPT will be worth the extra money from what I have read about them. I was going to put together my own "kit" off of Amazon since I really like the 175 watt panel and Renogy only has 100 (rectagular) or 150 watt (Square - but might be too wide for where I want to install).
Right now Im running TWO 6v AGM / 220 amp hours which is more than enough for week for a weekend WITHOUT Solar. Its a high ticket item but I think in the "long run" I will be glad I installed.
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07-27-2018, 10:33 PM
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#18
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I Think We're Lost!
Brand: Still Looking
Model: Tiffin Wayfarer 24 BW
State: New York
Posts: 22,195
THOR #8860
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I agree with you: it might be more of a "want", than it is a "need"...
...But it's my "want"!
__________________
"What: me worry?"
Good Sam Member 843599689
Current coach: Tiffin Wayfarer 24 BW
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07-28-2018, 01:50 AM
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#19
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Senior Member
Brand: Thor Motor Coach
Model: 2017 Axis 25.4
State: Arkansas
Posts: 2,669
THOR #12231
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Yep, but I guess the entire RV is that way for most of us. I look at it as "I always wanted to do this" kinda of thing and "Better do it now while we are able".
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07-28-2018, 04:34 AM
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#20
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Senior Member
Brand: Still Looking
State: Alabama
Posts: 119
THOR #12091
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I had a Go Power Solar system installed on my Thor Miramar 34.1. It has three 160 watt panels and we also added two more house batteries for a total of four batteries. It can definitely more than handle the load you are suggesting.
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