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.
SOLPERK Solar Panel Kit 20W 12V, Solar Battery Trickle Charger Maintainer + Upgrade Controller + Adjustable Mount Bracket for
4.4 | 3,259 ratings
Price: 49.99
Last update: 01-11-2025
About this item
【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
【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
Product information
| Brand | SOLPERK |
|---|---|
| Material | Aluminum, Monocrystalline Silicon |
| Product Dimensions | 15"L x 13.2"W x 0.7"H |
| Item Weight | 3 Pounds |
| Efficiency | High Efficiency |
| Connector Type | SAE |
| Included Components | 1 X 20W Mono solar panel, 1 X360° Adjustable bracket, 1 X User Manual, 1 X controller charger, 2 X Mount Screws |
| AC Adapter Current | 8 Amps |
| Maximum Voltage | 12 Volts |
| Maximum Power | 20 Watts |
| UPC | 884017701569 |
| Item Weight | 3 pounds |
| Manufacturer | SOLPERK |
| ASIN | B08GX19KT9 |
| Item model number | FD-EP-230201-1688 |
| Customer Reviews |
4.4 4.4 out of 5 stars
2,913 ratings
4.4 out of 5 stars |
| Best Sellers Rank | #752 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden) #1 in Solar Panels |
Top reviews from the United States
Eugene45Works good
LarryIt works and is easy to install
Benjamin F. NeadVery nice panel with a terrible wiring harness.
Benjamin F. Nead
Reviewed in the United States on December 6, 2020
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° C
Next, 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 panel
Maximum Power (Pmax) 50W
Maximum Power Voltage (Vmp) 18V
Maximum Power Current (Imp) 2.78A
Open Circuit Voltage (Voc) 21.6V
Short Circuit Current (Isc) 3.06A
Maximum System Voltage 600VDC
Nominal Operating Cell Temp. (NOCT) 45+/-2°C
Power Tolerance +/-5%
Application Class Class A
Weight 7.2lbs
Dimensions 21.3 x 21.3 x 1 inch
All technical data at Standard Test Condition (STC).
STC Irradiance 1000W/m2. Cell Temperature 25°C. Air Mass AM=1.5
Images in this review
Northern Dad Excellent for Ham radio and POTA
G. FreyKeeps a reliable charge from the sun
BeemanSecond round of purchasing these.
86FUBAR Quality product
Eric Sullivan