Price: $65.99 - $49.99
(as of Feb 16, 2025 16:56:22 UTC – Details)
Product Description
SOLPERK Solar Panels Specification
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Customer Reviews
4.4 out of 5 stars 3,318
3.7 out of 5 stars 190
4.3 out of 5 stars 1,533
4.5 out of 5 stars 22
4.2 out of 5 stars 102
4.4 out of 5 stars 197
Price
$49.99$49.99
$29.99$29.99
$38.99$38.99
$119.99$119.99
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$59.99$59.99
Maximum Power
20 Watts
10 Watts
10 Watts
200 Watts
50 Watts
25 Watts
High Efficiency
30%
30%
30%
30%
30%
30%
IP67 Waterproof
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√
√
√
√
√
Maximum Operating Voltage
18V
18V
18V
18V
18V
18V
Sturdiness
√
√
√
√
√
√
【High Conversion Rate】This 20W solar panel with monocrystalline A+ solar cell has an excellent cell efficiency of 21%-30%. Designed to charge and maintain 12V rechargeable batteries like LiFePO₄, Lithium Ion, AGM, SLA, GEL, EFB, MF, etc. Keep batteries in charged for trailer, tractor, truck, boat, motorcycle, RV, car, lawn mower, water pump, gate opener, electric fence, etc
【Built to Last】 Low-iron tempered glass surface and corrosion-resistant aluminum frame, make this solar panel 100% waterproof and rustproof, and provide the prolonged lifespan up to 25 years. This 12V solar panel can withstand all weather conditions such as sandstorm, strong wind, thunderstorm, blizzard, hail, etc. It can withstand up to 2400Pa wind pressure and 5400Pa snow load
【Smart Charge Controller】The charging efficiency of this upgraded 8A controller is 20%-30% higher than other controllers on the market. Its intelligent three-stage charging design effectively prevents the battery from overcharging, over-voltage and short circuit. It takes no power from the battery. You will clearly know the charging status of the battery through the two indicator lights on the controller
【Easy to Install & Angle Adjustable】- Equipped with a 360 degree angle adjustable mounting bracket. Helps solar panels always have the best angle to face the sun. It’s very easy to install this bracket on the solar panel with pre-drilled mounting holes and needed screws. All cable connections are plug and play
【What You Get】 1 solar panel + 1 charger controller + 1 mounting bracket +1 alligator clips +1 O-rings + 1 set of mounting pieces. We provide one year after-sale service and lifetime technical support. 7×24 hours After-sales service ensures that your question is answered within one day
Customers say
Customers find the solar panel performs well and keeps their batteries charged. They appreciate its easy installation and clean assembly. The charge rate is satisfactory, with a gradual charge sufficient to keep the battery at peak levels. While some customers appreciate the build quality and size, others have issues with the charge controller and disagree on whether it offers good value for money.
AI-generated from the text of customer reviews
Eugene45 –
Works good
I purchased this to help keep the battery in my travel trailer charged. I don’t use the trailer much yet but the lights have worked whenever I do without fail. It was an easy straightforward install and the cord was long enough to run it into the battery compartment from the roof. It even charges on cloudy days. The brace it comes with is a good idea but could be a bit shorter. I can see it working great for applications where one would need to get up over something but to me it sticks up too far on my roof. I would have preferred something less visible from the ground. For the price it’s a good buy I think.
Frank F. –
Works Great
This controls the charge on the battery and detects when the battery is fully charged and stops charging (so battery is not overcharged).
Jody L. Griswood –
Efficient Solar Panel Kit with a Need for Longer Cords
The SOLPERK Solar Panel Kit 20W 12V proves to be a highly efficient and reliable solution for keeping my RV battery charged. Its performance is impressive, and the upgraded controller, along with the adjustable mount bracket, adds to its versatility. However, I encountered a minor issue with the length of the cords. Since my RV is stored under covered parking and the battery is located further back in the side compartment, the existing cord length doesn’t quite reach from the ideal placement of the panel at the front, where it gets the most sun. Despite this inconvenience, the overall functionality and efficiency of the kit are commendable. A longer cord would make this product perfect
Dave –
Works as it should.
Neat little solar panel for maintaining or even (slowly) charging a battery. The solar controller is simple and works good.
Roy Jitdanai –
Best Solar Charger
This is a good quality built charger with rigid aluminum frame. It is working even with little sunlight.It came in a neatly and carefully packed package. The price is very good for a 50W charger with a controller.
Larry –
It works and is easy to install
I’ve purchased several of these over the years to maintain a charge on batteries over the winter in Northern MN. I don’t even angle them… just flat against siding of shed… gets about 1/2 day of sunshine … through tree branches… not the ideal setup but the charges still work! I like the fact that there are multiple plug and play connectors… clamps, wing nut connectors. They have not failed to maintain a battery charge over the winter where it gets 10 – 20 below zero..
Richard R –
A great solar panel
This solar panel works great keeping my deep cycle battery hot for my automatic gate opener. Doesn’t overcharge the battery when battery is topped out. I really like it!
Benjamin F. Nead –
Very nice panel with a terrible wiring harness.
First off, I never intended to use just one of these panels to charge my 12V lead acid car battery with the included PWM charge controller and attached wiring harness. Rather, I intend to buy multiple examples of these panels and configure them with a more comprehensive MPPT controller, LiFePO4 battery and inverter in a carry-in-car and set-up-quickly portable application. The 23.1″ (541mm) square footprint is ideal for the portability I need and the price is certainly right.Fortunately, the fit and finish of the panel itself is very good. This sort of thing would have easily cost twice as much just a few short years ago. There are a few rough edges on the corners of the aluminum framing, but that’s a minor point. The individual cells look to be very cleanly assembled, topped with a nice piece of glass and the caulking sealant job along the interior of the frame is very clean.I knew from the Amazon listing, however, that the panel would come with a 6′ long piece of spindly zip cord terminated with a 2-pin trailer connector. The good news is that the junction box termination on the back of the panel is of the conventional type with a water-proof seal. It’s going to be relatively easy to solder in better cabling with standard MC-4 connectors.As it turns out, the attached cable (basically 14 gauge red/black lamp cord) had a short . . . zero voltage and amp readings on the multimeter at the connector end! Readings off the tabs inside the junction box (easy to pry off the back cover with a flat blade screwdriver) indicates, though, that the panel outputs 23.6V and 2.5A on my quickly-assembled back yard test rig (picture attached.) That’s very good. I tested at Noon with reasonably perpendicular panel/Sun angling on a cloudless day. Ambient temperature was approximately 70° F / 21° CNext, I trimmed/stripped the 14 gauge wires to within about 1 foot of the junction box and got similarly good readings. Subsequently, I found out that the short was in the remaining (now detached) ~5 feet of cable somewhere along the black/negative wire. I did not test the included PWM charge controller.If it was just for the panel itself, I’d give the Solperk SK-M50W a solid 5 stars. I’m knocking it down to 4 stars because the wiring harness is terrible and, in my case, non-functioning out of the box. I will be buying more of these panels for my above-described application, knowing that the other included bits will be going into the waste can and I’ll need to solder in suitable 10 gauge wires at the junction box end, terminated at the other end with real MC-4 connectors. The additional attached photo here shows the back of the panel (junction box cover removed) with labeling. In case the resolution of the photo isn’t good enough to clearly see, the specifications shown on the label are as follows . . .Solperk Model: SK-M50W solar panelMaximum Power (Pmax) 50WMaximum Power Voltage (Vmp) 18VMaximum Power Current (Imp) 2.78AOpen Circuit Voltage (Voc) 21.6VShort Circuit Current (Isc) 3.06AMaximum System Voltage 600VDCNominal Operating Cell Temp. (NOCT) 45+/-2°CPower Tolerance +/-5%Application Class Class AWeight 7.2lbsDimensions 21.3 x 21.3 x 1 inchAll technical data at Standard Test Condition (STC).STC Irradiance 1000W/m2. Cell Temperature 25°C. Air Mass AM=1.5
Fatima –
First attempted was completely cracked. Item need to be shipped with better bubble wrap. Bubble wrap to thin. I did get a refund and order another one and my husband loves it.
Michel Mokbel –
Good quality
Laurie Rothweld –
I purchased with the hope that this charger would keep my car battery charged over several months while I was away from home. I have now used it twice, both for two month periods where the car was parked under a carport. Even though the charger was not in full sun, it has worked and the battery has been fully charged each time on my return.
Singapore –
Good
Bob –
Will be perfect for Holiday unit to keep stored Suzuki ‘s battery fully charged and prolong its working life