Portable solar charger from Renogy - Page 2 - Fiberglass RV


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Old 02-20-2014, 01:40 PM   #15
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Jon, you said you have a unit on your roof already. How are you going to hook up your new folding system? Will it tie in with what you already have or will you have 2 separate solar systems? Will you have a junction box to tie the folding system in with your roof mount system and just plug in the folding system as needed? If so it the plans in your head or paper?
I did find on Ebay after many hours searching the net, a store that sells kits with two panels systems in the 65 and 85 watt. I thought two 50 watt panels would be great but 2 65 watts would work great. Here is the link to the site
Solar Panel Kit Panneau Solaire 130W 130 Watt 2 65W Mono 12V 15A LCD Boat RV | eBay
I called them (in Canada) and asked about leaving one pnl on the roof and have one moveable if or when needed. He wasn't crazy about it but I think with extra wire and a junction box it should work. The charge controller has a LCD display so that will save me buying a display that I can read.
I am open for the pros or and cons.
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Old 02-20-2014, 02:28 PM   #16
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I have two choices - bypass the controller on the portable panel & parallel it with the solar panel on the roof or add a connector on the outside of the trailer that feeds to the electrical system on the input side of my battery monitor and use the controller built into the portable panel.

My choice is to go with the second solution - individual controllers, unless sometime in the future I decide to switch to an MPPT controller. Both the portable & built in controllers are PWM which are not as efficient as the far more expensive MPPT controller. The problem is once you get above a 15 amp MPPT controller, the price jumps high enough that an additional panel or two may be a less expensive solution (provided you have the room).

If you really want to know the state of charge of your battery, I strongly suggest purchasing a monitor in addition to the readout on the charge controller.

A real monitor such as a Trimetric 2025 will keep track of actual amp hours in & out, rather than just give a voltage measurement. For example, right now both the LED's built into the trailer's basic battery monitor & the GoPower solar controller show the batteries at 100%, however the Trimetric 2025 shows that I am still down by 8 amp hours from a fully charged batteries.
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Old 02-23-2014, 08:47 PM   #17
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So I read all the threads in this message and just want to double check - are y'all talking about using solar panels to charge the battery in lieu of a generator? My husband and I would really like to use solar instead of a noisy generator when camping off the grid, so I am very interested in all this... We have a 13' Scamp with 1 deep cycle marine battery, so are looking at options. LOVE this site!! : )
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Old 02-23-2014, 10:30 PM   #18
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Anne, solar is Great! but it wont run your air conditioner(well with a normal sized battery bank)

I want to add solar to my rooftop to be able to run the roof fan, and thinking of adding a few fans inside as well. But when its hot and humid Im firing up the yamaha for the ac!
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Old 02-24-2014, 12:01 AM   #19
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Originally Posted by azooey73 View Post
So I read all the threads in this message and just want to double check - are y'all talking about using solar panels to charge the battery in lieu of a generator? My husband and I would really like to use solar instead of a noisy generator when camping off the grid, so I am very interested in all this... We have a 13' Scamp with 1 deep cycle marine battery, so are looking at options. LOVE this site!! : )
Anne,
Solar system is exactly that. You can replenish energy spent each night the next sunny morning. It is clean quiet energy.
Russ
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Old 02-24-2014, 05:14 AM   #20
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Jon, what did you decide to use for the connection through the trailer wall?
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Old 02-24-2014, 07:42 AM   #21
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Small Honda or Yamaha 2000 will run most (not all) a/c units. Love me some Yamaha Gen! Solar is pretty cheap now. I want solar to charge up the banks and to run the MaxFan (on auto) while the unit sits in storage and while dry camping.
Solar wont replace a gen if you need a/c. I want the best of both worlds. You can get a nice solar package for less than 300 dollars now. You can always add another solar panel if needed.
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Old 02-24-2014, 10:32 AM   #22
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A 5000 btu air conditioner uses ~500 W when running, over 1000 to start. 500 W of solar power, combined with a 1500 W inverter and a large battery bank, (220 Ahr) and you can, in theory run a small AC.
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Old 02-24-2014, 11:09 AM   #23
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Dave a mini split system runs between 300 to 400 watts on low. So I guess you can run on solar. I forgot what the running watts and the amps are because the papers are in the Boler but I do know the Yamaha starts and runs my 9000 btu mini with no problem at all.
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Old 02-27-2014, 05:17 AM   #24
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This is what I was looking for, thanks for the info
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Old 03-04-2014, 10:52 AM   #25
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Hi Jon, please give us a review when you get the folding solar panel.
Thanks..
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Old 03-04-2014, 05:53 PM   #26
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Hi Jon, please give us a review when you get the folding solar panel.
Thanks..
For those interested in Solar Blvd's 160 watt panel, I posted a review with photos on my LakeshoreImages page.

Overall, the panel works well, however you can see why it is as inexpensive as it is...
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Old 03-04-2014, 08:19 PM   #27
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Jon is the charge controller that is built onto your panels weather proof?
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Old 03-05-2014, 09:09 PM   #28
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Jon is the charge controller that is built onto your panels weather proof?
Since there is no manual, your guess is as good as mine. It doesn't look all that waterproof, but the panels slope enough that it would thai quite a blow to get much water on it...
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