Thinking about buying solar panels
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Old 06-30-2013, 05:18 PM   #1
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Default Thinking about buying solar panels

Hey everybody I don't know if I'm putting this in the right area
I'm thinking of getting a couple of hundred watt solar panels. 1 for trailer battery upkeep For my camper
And thinking of doing a tie grid
Any suggestions or help

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Old 06-30-2013, 05:27 PM   #2
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If you only have one battery, I doubt you need 200 watts of solar to keep it up. You want to tie in to the public electric grid? With your 200 watts of solar?
We need more info if you want suggestions.

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Old 06-30-2013, 06:56 PM   #3
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The largest wattage panel you'll find @ 12V would be about 135-145 watts each.
Panels with higher output tend to be 24 or 48v.

You do not want to hang a big panel directly on one (or more) batteries - you need a charge controller or you'll FUP your batteries in shots order.

Grid tie? For a couple hundred watts? It's not worth it, the utility pays you at the wholesale rate; it would take over a decade to even get close to any kind of payback, especially when you'd be using a chunk of the power for yourself.

Check out www.wholesalesolar.com; they have packages for on and off grid. I bought a system from the (off grid); their support was excellent in helping to get the right stuff and not buy more than I needed.

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Old 06-30-2013, 10:40 PM   #4
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Thanks guys I was going to put one on camping trailer that has two batteries

And then I was going to put one on the house to start playing with but I'm sure I would add more to it down the road.

So my trailer I'm thinking what size of a solar power box converter do I need
And keep two batteries up to you think that would keep the batteries charged
Obviously I know how other things coming to play like how much you use stuff and sunlight
But for the house what about Tie grid converters.
I was thinking a bout grape solar panels 100 wattsolar from Home Depot
They have two different panels one mono and one Polly .
The mono cell is for $200 and the poly cell is for $128
I can't tell the difference what would be the better of the two obviously the cheaper one I'm thinking again thanks

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Old 07-01-2013, 01:23 AM   #5
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If you shop around you can get the better 100w panels for $150 to $180. For your trailer you will need a solar controller. A 10 amp would be fine. Something like this............
http://www.ebay.com/itm/10A-Solar-Charge-Controller-Regulator-10Amp-Solar-Battery-Charger-Light-Control-/380669535866?pt=LH_DefaultDomain_0&hash=item58a1ac 267a
Many panels on Ebay for around $150........
http://www.ebay.com/itm/100W-Watts-100-Watt-Solar-Panel-Off-Grid-12-Volt-12V-RV-Boat-Monocrystalline-/300926720011?pt=LH_DefaultDomain_0&hash=item4610a1 580b

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Old 07-01-2013, 01:42 AM   #6
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Quote:
Originally Posted by hiwall View Post
If you shop around you can get the better 100w panels for $150 to $180. For your trailer you will need a solar controller. A 10 amp would be fine. Something like this............
http://www.ebay.com/itm/10A-Solar-Charge-Controller-Regulator-10Amp-Solar-Battery-Charger-Light-Control-/380669535866?pt=LH_DefaultDomain_0&hash=item58a1ac 267a
Many panels on Ebay for around $150........
http://www.ebay.com/itm/100W-Watts-100-Watt-Solar-Panel-Off-Grid-12-Volt-12V-RV-Boat-Monocrystalline-/300926720011?pt=LH_DefaultDomain_0&hash=item4610a1 580b
Thanks I'll keep an eye on those
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Old 07-01-2013, 02:35 AM   #7
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For your camper you might want to take a look at this article

http://otherpower.com/popup

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Old 07-01-2013, 03:53 PM   #8
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Can anybody explain why they think Home Depot has $100 difference on a hundred watt solar panel one being a mono crystalline and the other one being a polycrystalline solar panel
Polly is $100 cheaper on their website
Just confused all the data seems to be the same to me

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Old 07-01-2013, 07:08 PM   #9
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Quote:
Can anybody explain
Read this.................................
http://energyinformative.org/best-solar-panel-monocrystalline-polycrystalline-thin-film/
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Old 07-01-2013, 07:57 PM   #10
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All great info guys thank you

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