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07-03-2011, 11:58 AM
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#1
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Senior Member
Trailer: 1973 Compact II / 2001 Honda CRV SE automatic
Posts: 285
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Fold-Up Carrying Case Solar Panels At Harbor Freight
So I just wandered through Harbor Freight the other day, and noticed they have a new (to me at least!) solar panel set up that's made into a little briefcase-like carrying case, maybe about the size around of a standard computer monitor screen. The box says that it puts out 18-24 volts, and you can see in the picture various cable connectors to hook it up to various devices, or straight to a battery for charging. The packaging advertises the panel setup as being good for charging cordless drills among other things. I think it was around $80. Looked VERY interesting to me, since while I'm very interested to set up SOMETHING as far as a solar system for my rig, I'm very apprehensive about making holes in my trailer's shell, mounting permanent panels, etc. So something portable like this, that I could subtly set up, to just charge up when I'm boondocking or something, would be great, and if nothing else a great way to start out with solar. But, I have some questions/thoughts...
1. Would just hooking this sort of set up to my house battery directly allow it to just free flow whatever amt of electricity the panels create into my battery? Would that hurt it? I'm thinking there might need to be some kind of charge controller between the panel and the battery (seems like that's how most of the built-in systems people have made work).
2. The panel's packaging says it puts out 18-24 volts, while our house batteries are 12 volts, so again, would I be cooking my battery, or what?
Anyway, hoping that some of you guys who are WAY more engineering/creative/analytical than me have already seen this, have it all debugged, or at least have some good ideas/suggestions/etc?
Lets see how this thread goes!
Joe
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07-03-2011, 12:23 PM
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#2
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Senior Member
Name: jim
Trailer: 2022 Escape19 pulled by 2014 Dodge Ram Hemi Sport
Pennsylvania
Posts: 6,710
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You would need a charge controller that would limit the output. I have 1X 15 watt unit I just lay on my tongue, it puts out about 1 amp/hour or maybe 6 amps on a good day. It is enough to keep my batteries topped off.
Find out the watts to compare to other units.
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07-03-2011, 12:45 PM
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#3
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Senior Member
Trailer: Scamp
Posts: 7,056
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A lot of people are buying HF solar panels. If it was me one of things I would want to know is the life of the panel. I bought a Kyocera 65 Watt panel about 3 years ago. The specs say that it will still have over 80% of it's output after 20 years. If you can't get that kind of specification I'd leave them on the shelf. It's not good economics if you have to replace them in a couple years.
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Byron & Anne enjoying the everyday Saturday thing.
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07-03-2011, 02:18 PM
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#4
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Moderator
Trailer: Fiber Stream 1978 / Honda Odyssey LX 2003
Posts: 8,222
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Quote:
Originally Posted by Byron Kinnaman
It's not good economics if you have to replace them in a couple years.
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A lot will depend on intensity of use. I boondock less than 25% of my trailering time. My 5 year old panels still function as well as they always have.
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Frederick - The Scaleman
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07-04-2011, 02:20 AM
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#5
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Senior Member
Trailer: 1973 Compact II / 2001 Honda CRV SE automatic
Posts: 285
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Quote:
Originally Posted by Byron Kinnaman
A lot of people are buying HF solar panels. If it was me one of things I would want to know is the life of the panel. I bought a Kyocera 65 Watt panel about 3 years ago. The specs say that it will still have over 80% of it's output after 20 years. If you can't get that kind of specification I'd leave them on the shelf. It's not good economics if you have to replace them in a couple years.
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Byron, I'm wondering what an 'HF' panel is? I'm still so new to all of the solar stuff...
I KNEW I'd get some responses on this thread...hehehe
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07-04-2011, 08:08 AM
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#6
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Senior Member
Name: jim
Trailer: 2022 Escape19 pulled by 2014 Dodge Ram Hemi Sport
Pennsylvania
Posts: 6,710
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Quote:
Originally Posted by Joseph Domingos
Byron, I'm wondering what an 'HF' panel is? I'm still so new to all of the solar stuff...
I KNEW I'd get some responses on this thread...hehehe
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"HF" is Harbor Freight
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07-04-2011, 11:51 AM
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#7
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Moderator
Trailer: Fiber Stream 1978 / Honda Odyssey LX 2003
Posts: 8,222
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Quote:
Originally Posted by Joseph Domingos
So I just wandered through Harbor Freight the other day, and noticed they have a new (to me at least!) solar panel set up that's made into a little briefcase-like carrying case, maybe about the size around of a standard computer monitor screen.
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I went to my brand new Harbor Freight store and couldn't find what you are describing. I found the 45 watt sets like I own and the small 5 watt trickle charger that you place on the dashboard of your car... I guess I'll have to ASK next time...
__________________
Frederick - The Scaleman
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07-04-2011, 12:25 PM
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#8
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Senior Member
Trailer: 1973 Compact II / 2001 Honda CRV SE automatic
Posts: 285
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Quote:
Originally Posted by Frederick L. Simson
I went to my brand new Harbor Freight store and couldn't find what you are describing. I found the 45 watt sets like I own and the small 5 watt trickle charger that you place on the dashboard of your car... I guess I'll have to ASK next time...
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Hey Fred,
I found it on the HF website also, Chicago Electric Power Systems 95000, check it out there and see what you think, okay? I do value your techno input Mr Fred! hehe
HUGS!
Joe
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07-04-2011, 12:40 PM
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#9
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Senior Member
Name: jim
Trailer: 2022 Escape19 pulled by 2014 Dodge Ram Hemi Sport
Pennsylvania
Posts: 6,710
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07-05-2011, 09:25 PM
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#10
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Senior Member
Trailer: 1986 U-Haul CT13 ft
Posts: 220
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interested also to get your feedback Fred ... i have an Inside Track Membership (you pay an extra 20 bones for the year and get discounts on top of sales - yaaay!), so this week's sale puts the unit for me at $43 duckets. for the great portability and relatively decent charge power - i am quite interested, but will defer to your wisdom!
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07-05-2011, 10:21 PM
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#11
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Moderator
Trailer: Fiber Stream 1978 / Honda Odyssey LX 2003
Posts: 8,222
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Quote:
Originally Posted by cpaharley2008
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Gina D. used to have that set; I think she ordered it online, but not at HF, years ago. I borrowed her's once, before I bought my 45 watt set. I was very impressed.
So Harbor Freight carries them now? I'll have to check again.
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Frederick - The Scaleman
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07-06-2011, 06:57 AM
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#12
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Senior Member
Trailer: 2009 Scamp 16 ft / 2003 Durango
Posts: 696
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Frederick,
I may have misread something and if so sorry.
What is in the HF catalog is not always available in the stores.
Bill K
Quote:
Originally Posted by Frederick L. Simson
Gina D. used to have that set; I think she ordered it online, but not at HF, years ago. I borrowed her's once, before I bought my 45 watt set. I was very impressed.
So Harbor Freight carries them now? I'll have to check again.
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07-06-2011, 10:01 AM
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#13
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Senior Member
Trailer: 1973 Compact II / 2001 Honda CRV SE automatic
Posts: 285
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I see my local Costco has the Coleman panel set in stock again, the 3 big panels that look SO MUCH like the HF set, for $199. Again though, just feel so apprehensive about making any holes in my trailer's hull... hehe
Anyway, so I've still got this folding case set on the brain, any suggestions for a controller that will keep it from cooking my battery, but at the same time won't break my bank account? I've been wanting to get started with something solar for a while, and I'm thinking this might be a good starting point. So portable I could use it for the trailer, and maybe use it for other applications too like charging the cell phone or IPad in camping trips as well...
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07-06-2011, 10:53 AM
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#14
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Senior Member
Trailer: 92 16 ft Scamp
Posts: 11,756
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Joseph you dont need to add holes to the trailer - I use my panel free standing (easy to move around to where the sun actually is while camping). I leave the small controller always attached to the battery and put it inside a small water proof case attached to the battery case - so all I have to do to connect the panels is open up the box and plug the panel into it. Easy and no holes.
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07-06-2011, 11:04 AM
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#15
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Senior Member
Trailer: 1986 U-Haul CT13 ft
Posts: 220
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i'm with you Joe,
i think its a decent deal and a nice portable solution.
especially if you compare it with the 5-watt they also sell which is still portable but more for mounting. they are both on sale and i am leaning toward the portable case.
HF also sells the Costco version for about 40-50 bucks cheaper than Costco (i am a member at both). while its also a good option, i dont need that much portable power and also dont have the real estate to properly mount the 3-panel set up.
anyone think of any reasons why i shouldn't? other than the obvious ... its from Harbor Freight!
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07-06-2011, 11:27 AM
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#16
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Senior Member
Name: jim
Trailer: 2022 Escape19 pulled by 2014 Dodge Ram Hemi Sport
Pennsylvania
Posts: 6,710
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What size controller you need is dependent upon your capacity. CW has a 8 amp one for $20
Rdk Products - Nature Power Solar Battery Charge Controllers- 8 Amp - RV Solar Power - Camping World
It says this is good for 120 watts.
I bought a 15 watt panel and controller from CW and it keeps my dual group 27 batteries fully charged while sitting and with the phantom drains of the propane/radio/tv on it still keeps it 100%. I'm hoping to get 1 amp per hour or 6 per day to allow me to go 4 days using 25 a/h per day before having to hook up again.
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07-06-2011, 11:35 AM
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#17
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Senior Member
Trailer: 1979 13 ft Boler and 1987 Bigfoot 5th Wheel
Posts: 2,025
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For 43 bucks I'd get one. The ones Gina had were from a seller on ebay if I remember correctly.
__________________
1979 Boler B1300 | 1987 Bigfoot 5th Wheel | 1988 Bigfoot 5th Wheel | We officially have a collection!
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07-07-2011, 12:46 PM
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#18
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Member
Trailer: 1977 Boler
Posts: 59
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I found one of those briefcase models used on Kijiji. It's in a "Power Fist" box and was purchased in Canada at Princess Auto. I had a look but they don't list that product anymore.
-M
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07-07-2011, 06:35 PM
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#19
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Senior Member
Name: Norm and Ginny
Trailer: Scamp 16
Florida
Posts: 7,517
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Solar Cell
We're considering the 68 watt roof mounted flexible solar cell for our Scamp.. Just waiting to meet or talk to someone who's had one for a while. They are about $200.
Norm
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07-09-2011, 06:33 PM
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#20
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Senior Member
Trailer: Casita
Posts: 167
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Thirteen watts is not very much power. I have a 54-watt set (3X18 panels, the last model Costco sold) and it works well for our usage. You should calculate your power needs, then buy accordingly.
How do you use the trailer? For a weekender, 13 watts might give enough power to stay out an extra day if you're conservative.
Marv
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