|
10-23-2017, 08:13 AM
|
#1
|
4 Rivet Member
1995 30' Excella
Harper Woods
, Michigan
Join Date: Aug 2017
Posts: 316
|
review of the Harbor Freight 100W solar kit?
Hello,
I've searched the forum for info about the newer Harbor Freight 100W system but found nothing. Does anyone have experience with it? Generally, HF stuff is considered to be of lower quality, but this is not always the case. The reviews of this system elsewhere have been uniformly positive.
It is a complete kit (less batteries) at ~$150 with a discount coupon. It has 1) four 25W amorphous panels with stands included, or they can mounted on rails, a 2) a 10Amp charge controller with USB and 12V outlets, and 3) the cabling is ok-to-good quality. i think if the trailer has been outfitted with LED lighting to reduce power consumption, that this system might have a very good price to performance ratio.
Here is the manual that describes the system:
https://manuals.harborfreight.com/ma...3999/63585.pdf
Any opinions?
|
|
|
10-23-2017, 08:39 AM
|
#2
|
65th Anniversary CLIPPER
1996 36' Clipper Bus
Tub City
, British Columbia
Join Date: May 2009
Posts: 3,309
|
The first thing I notice on the attached document that the solar panel frame is made of some type of plastic. I would not want anything but an aluminium frame for support, as the plastic will warp in the sun.
Dave
__________________
"LOVE and LOSS, are two of the greatest emotions one can experience. -- I went to school to learn about "WHAT GOES UP MUST COME DOWN" but I had to live my life to learn the lesson of: 'WITH LOVE THERE WILL BE SORROW'."
David Stewart. (after loosing my NAVIGATOR)
|
|
|
10-23-2017, 08:52 AM
|
#3
|
Rivet Master
2006 23' Safari SE
Biloxi
, Mississippi
Join Date: Nov 2011
Posts: 8,278
|
One benefit of buying from HF is that if you are not satisfied with the product it can be returned within a reasonable time.
I generally figure that if I get one use out of one of their cheap tools I have pretty much got my monies worth. Their new series of small generators are getting pretty good reviews so maybe they are improving their product quality.
__________________
MICHAEL
Do you know what a learning experience is? A learning experience is one of those things that says "You know that thing that you just did? Don't do that."
|
|
|
10-23-2017, 11:20 AM
|
#4
|
4 Rivet Member
1995 30' Excella
Harper Woods
, Michigan
Join Date: Aug 2017
Posts: 316
|
Re the plastic frame, the heat is one issue (I'm in temperate Michigan), and maybe coating of some UV protectant would be good to slow down degradation. I think the stress points would be the mounting holes, and looser or cushioned attachment might be good.
Also related to longevity, what about roof mounting? While many people put solar panels on the roof for convenience, I've wondered if the performance is significantly degraded when they're even slightly dirty. How are roof mounted panels kept clean?
If I were to set up the panels so that assembly is simplified, it may be better to store them in the trunk when not in use. They would be easy to clean and only exposed when needed.
By the way, I have a HF 3200w generator with the 'Chonda' engine (Honda knockoff), and it has performed ok. I might even convert it to tri-fuel, and divert an unused natural gas line (BBQ or swimming pool heater) to it if the pipe flow rate is sufficientr.
|
|
|
10-23-2017, 12:40 PM
|
#5
|
Rivet Master
2007 22' International CCD
Corona
, California
Join Date: Jul 2013
Posts: 9,180
|
The real issue with the HF solar panel is that it is very thin glass, and the silicon that forms the solar panel is vapor deposited on it. It's NOT designed to be mounted on a moving vehicle and subjected to the stresses it would receive...I would bet the glass will shatter easily from vibration, stress, and wind. They are really designed to be mounted on the ground or to a house.
That said, you could use them portable, which may be useful. I have some, and use them mounted on a house to charge some batteries. For that, they will work OK.
Note also that amorphous panels do not usually have as long a service life as a mono-crystalline panel.
Sadly, the older versions were made with an aluminum frame, and were a bit more sturdy.
__________________
Rich, KE4GNK/AE, Overkill Engineering Dept.
'The Silver HamShack' ('07 International 22FB CCD 75th Anniversary)
Multiple Yaesu Ham Radios inside and many antennae sprouting from roof, ProPride hitch, Prodigy P2 controller.
2012 shortbed CrewMax 4x4 Toyota Tacoma TV with more antennae on it.
|
|
|
10-23-2017, 01:19 PM
|
#6
|
4 Rivet Member
1995 30' Excella
Harper Woods
, Michigan
Join Date: Aug 2017
Posts: 316
|
Thanks for the insightful comments.
|
|
|
10-23-2017, 02:33 PM
|
#7
|
4 Rivet Member
2021 16' Bambi
2021 22' Bambi
Currently Looking...
North Port
, Florida
Join Date: Mar 2007
Posts: 331
|
My brother just returned that same setup. It was purchased just before Hurricane Irma came through to charge his single battery travel trailer. We've had good luck with other solar items from HF so we thought we'd give it a try. After draining his battery down from one night of use and with solar hooked up all day, it would not bring the battery back to 100% charge. The controller was indicating 14.2v being supplied, but I assume very little amperage.
|
|
|
10-23-2017, 06:09 PM
|
#8
|
4 Rivet Member
1995 30' Excella
Harper Woods
, Michigan
Join Date: Aug 2017
Posts: 316
|
Quote:
Originally Posted by cliffcharb
My brother just returned that same setup. It was purchased just before Hurricane Irma came through to charge his single battery travel trailer. We've had good luck with other solar items from HF so we thought we'd give it a try. After draining his battery down from one night of use and with solar hooked up all day, it would not bring the battery back to 100% charge. The controller was indicating 14.2v being supplied, but I assume very little amperage.
|
You mentioned that the battery was 'drained'. The instructions say that a battery must have a minimum voltage of 12.6V for the solar system to work. What was the drained battery's voltage? Was the battery possibly killed by discharging it too far/too often?
|
|
|
10-23-2017, 08:33 PM
|
#9
|
Rivet Master
Commercial Member
New Borockton
, Alabama
Join Date: Sep 2002
Posts: 1,593
|
Quote:
Originally Posted by Bob Blarney
You mentioned that the battery was 'drained'. The instructions say that a battery must have a minimum voltage of 12.6V for the solar system to work. What was the drained battery's voltage? Was the battery possibly killed by discharging it too far/too often?
|
That should be your answer right there. Batteries are often discharged to below 12.6 ~12.2 is 50% and 12.7-9 is OCV or resting voltage.
__________________
Randy...Converters, Inverters, Trimetric, Surge Protectors, Zamp, Smartplug, AGM Batts
888-828-1893
Bestconverter.com
|
|
|
10-24-2017, 06:43 AM
|
#10
|
4 Rivet Member
1995 30' Excella
Harper Woods
, Michigan
Join Date: Aug 2017
Posts: 316
|
Quote:
Originally Posted by 68 Overlander
That should be your answer right there. Batteries are often discharged to below 12.6 ~12.2 is 50% and 12.7-9 is OCV or resting voltage.
|
I see that I misquoted the the instruction manual. It does not say that the voltage must be 12.6 for the system to work. On page 9, it shows 12.6V in a graphic and says' Minimum battery voltage where normal charging can resume.' In a later section about error codes (p.10), it says that if the battery voltage is between 10.2-10.8V, that 'the controller will shut off and enter low-voltage protection state.' I think this means that it will charge at a battery voltage above 10.8V, but at a reduced rate. Also, there is a setting for the maximum duration of charge output until automatic shutoff.
|
|
|
10-24-2017, 09:17 AM
|
#11
|
2016 19ft flying cloud
Spokane
, Washington
Join Date: May 2016
Posts: 165
|
Look at the Eco Worthy panel on Amazon
For a little over $200 you can get a complete fold up 120Watt system that works great ,,,if you watch Amazon, you will see they put them on sale from time to time
The whole thing folds up like a suitcase , includes everything you need to keep your batteries going
|
|
|
10-24-2017, 01:18 PM
|
#12
|
4 Rivet Member
2021 16' Bambi
2021 22' Bambi
Currently Looking...
North Port
, Florida
Join Date: Mar 2007
Posts: 331
|
Quote:
Originally Posted by Bob Blarney
You mentioned that the battery was 'drained'. The instructions say that a battery must have a minimum voltage of 12.6V for the solar system to work. What was the drained battery's voltage? Was the battery possibly killed by discharging it too far/too often?
|
We didn't check the voltage but it was low enough his fantastic fans wouldn't work. Hooked up the genny and the converter brought it back up overnight.
|
|
|
10-24-2017, 01:23 PM
|
#13
|
.-. -...
2017 25' International
Niagara-on-the-Lake
, ON Canada
Join Date: May 2016
Posts: 1,837
|
Quote:
Originally Posted by cliffcharb
We didn't check the voltage but it was low enough his fantastic fans wouldn't work. Hooked up the genny and the converter brought it back up overnight.
|
Was the solar panel connected to the batteries overnight? If so, does the HF solar panel system have a blocking diode to prevent the panel from draining the battery during the hours of darkness. In modern systems it would be unusual if it didn't, but with a drained battery it sounds like there was a constant current draw from something and it could have been the solar panel.
__________________
Ray B.
|
|
|
10-25-2017, 09:57 AM
|
#14
|
4 Rivet Member
1995 30' Excella
Harper Woods
, Michigan
Join Date: Aug 2017
Posts: 316
|
Quote:
Originally Posted by cliffcharb
We didn't check the voltage but it was low enough his fantastic fans wouldn't work. Hooked up the genny and the converter brought it back up overnight.
|
Was the fan, or some other light or appliance that draws power, left on inadvertently, (maybe the light inside the refrigerator )? That would siphon off current that would have been used to charge the battery.
|
|
|
10-25-2017, 01:15 PM
|
#15
|
Rivet Master
2013 27' FB International
El Dorado Hills
, California
Join Date: Jan 2013
Posts: 2,023
|
100 watts isn't much. During late fall and winter my 400 watt setup needs about half the day to recharge the batteries to 100% after a normal days use. Longer if cloudy. Sometimes not even.
|
|
|
|
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
|
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
Recent Discussions |
|
|
|
|
|
|
|
|
|
|
|