i bought 4 of these to power a camper with 12 volt freezer a tv dvd player and lights.i have them hooked up to a hqrp charge controler and a vmax charge tank and they have no problem charging the battery even after runing the freezer all night long.cost about the same as a good generator but no noise and no gas.i like them and hope to use them for years.happy camper
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The panels arrived intact. They also arrived with no instructions.
The POLARITY of the terminal screws was also unmarked.
After determining POLARITY, I wired the two panels in parallel and ran the power wires to an HQRP SOLAR Controller ( POLARITY counts ).
I mounted the panels to the southern side of my house using 1/8"X1"X36" aluminum strips and 1/4" lag bolts through the ends of the strips.
You have to attach the battery ( again, observe POLARITY ) to the controller FIRST, and then the solar panel wires.
Initial charging from the controller will be at 14.4 VDC until the equalization voltage drops to about 13.70 VDC to maintain full charge. The battery LED light on the HQRP Controller will blink slowly at FULL charge.
I rate this project as being for medium to expert installers, requiring a multimeter, and household tools, i.e., drill, level, wire stripper, sealants, etc..........time to finish project---about 4 hours.
The lack of instructions for the panels assumes the installer is familiar with DC Solar Panels, and how to configure connections. Importantly, the matching of total output voltage and current from the panels to the controller is critical. My controller has a 10 Amp capacity, so the output from the solar panels (5.5 A) does NOT exceed its capacity. Apparently, the total wattage is more important than the rated voltage from the panels, as my panels produce 18 VDC at 5.5 Amps, and the controller is rated 12/24 VDC at 10 Amps.
Most importantly, my configuration seems to work...........
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the connection terminal is a little bit flimsy, but the panel seems pretty rugged with a strong aluminum frame and tough glass cover and sealed back. I measured the amperage in full sun and it is 50 watts. I wired it in parallel with an older 50 watt panel and it is working fine with an Instapark MPPT charge controller also bought from Amazon.
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I ordered this solar panel for my cabin in the m ountains. It came the day before I was to leave. Of course I heard about no instructions but that's ok. i am familiar with the product. But what i did not know there are no cables that can attach to my charge controller. They at least need to tell you that you won't be able to attach it without buying extra cables. Come on. No i have to ewait longer for that to ship?
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I could not be at the house for delivery. So I tested it in the UPS parking lot. I was surprised at the size of the unit. I have bought 2 18watt units from Northern Tool. This unit is about 25% bigger. Have brought 3 back to Northern so far. If I would not have had any experience with electricity...it would not go good.. this is not something that is a plug and play. There is no instructions or diagrams. You need to know what you are doing.
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