Polycrystalline Solar Panels 120W With High Efficiency

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Item specifice:

Material: Polycrystalline Silicon Max. Power(W): 120 Number of Cells(pieces): 30

Product Description:

Introduction of  Poly solar panels CNBM

Polycrystalline  Solar Panels 120W With High Efficiency

CNBM Solar photovoltaic (PV) Panel is designed for large electrical power requirements. It is the optimal choice for both on-grid and off-grid power systems. CNBM Solar panel offers high performance of power per square foot of solar array. Monocrystalline silicon(c-Si): often made using the Czochralski process. Single-crystal wafer cells tend to be expensive, and because they are cut from cylindrical ingots, do not completely cover a square solar cell module without a substantial waste of refined silicon. Hence most c-Si panels have uncovered gaps at the four corners of the cells.

 Polycrystalline  Solar Panels 120W With High Efficiency


1.Solar Cell : High efficiency crystalline solar cell. Even if under the weak light, the solar module can produce maximum power output.

2.Tempered glass (toughened glass): Anti-reflecting coating and high transmission rate glass increase the power output and mechanical strength of solar module.

3.EVA and TPT: Using high quality EVA and TPT to prevent destroying and water.

4.Long lifetime: ≥25 years; Less power decrease.

5.Resisting moisture and etching effectively, not effected by geology.

6.The certificate issued by international authority: UL, TUV, IEC, VDE, CE.


Main Solar Panel Specification

Characteristics of  Poly solar panels CNBM

Max Power Voltage Vmp(V) 






Max Power Current Imp(A)






Open Circuit Voltage Voc(V)






Short Circuit Current Isc(A)






Max Power Pm(W)







Temperature Coefficient of Cells Poly solar panels CNBM


45 ± 2

Temperature Coeffucients of Isc (%/)


Temperature Coeffucients of Voc (%/)


Temperature Coeffucients of Voc (%/)



Mechanical Data of Poly solar panels CNBM


1638 ×  982 × 40 mm


19.5 kg

No. of Cells and Connections

60 (6 ×10)


0 ~ + 5 W


Monocrystalline Cell 156 × 156 mm


624 Pcs/40ft(H) Container


Limits of Poly solar panels CNBM

Operating Temperature

-40 to +85

Storage Temperature

-40 to +85

Max System Voltage 

1000VDC(IEC) / 600VDC(UL)


Guarantees of Poly solar panels CNBM

Products Guarantee

12 yrs free from defects in materials and workmanship

Performance Guarantee

No less than 90% within 10yrs and no less than 80% within 25yrs




Packaging Information


Quantity:1 box/pallent

Loading Capacity:952pcs/40ft

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Q:What size and watt solar panel?
I think that typical solar panels are 2'x4' and produce something like 800-000 wh per day. (That's 0.8 - kwh per day.) More in the summer, less in the winter, if they're aimed sort of at the sun. There are newer, more expensive panels that produce more. There are also thin film panels that are less expensive, and probably more sturdy. You then have a couple choices. In a house, you'd have an expensive inverter to connect to the utility power, so you can have power at night when your panels aren't generating anything. In a trailer, you want 2-4-6 deep cycle car batteries to store the power. Then you could have an inverter to convert that power to 20v AC, so you could use normal appliances. Or, you could buy appliances that run on 2 volts DC. Maybe a combination of both. You'll need to figure out how much power you're going to use, so you know how many panels and batteries you're going to need. The calculation is easy. Figuring out how much power you need is hard. You need deep cycle batteries because you can repeatedly charge them way up and run them way down. Ordinary batteries die fairly quickly when you do that.
Q:How do solar panel power systems work?
Solar power works by making solar cells of two kinds of glass; one which has been “doped” to have too many electrons, and the other which has been “doped” to have too few electrons. These layers of glass are then glued together with a thin insulation layer in between them. The top layer of glass is the one with too many electrons, the bottom layer of glass has too few electrons, and the insulation allows electrons to pass from the bottom layer to the top layer easily, but not from the top layer to the bottom layer as easily. As photons come flying into this glass sandwich at the speed of light, the photons crash into the electrons in both layers and cause them to start moving. The electrons in the top layer are tightly packed and can’t move much, but the electrons in the bottom layer can move around enough that they end up crossing through the insulation into the top layer. However, because there are already too many electrons in the top layer, the newly arrived electrons have no place to rest. This buildup of electrons creates an “electrical pressure”. Then contacts are glued to the glass top and bottom, and a wire is added to connect the top layer to the bottom, and the electrical pressure which has built up in the top layer now has a way to escape, and the extra electrons which crossed over the bottom to the top can now return to the bottom layer. This flow of electrons from the top layer to the bottom layer is the electricity generated by the solar cell. A solar “panel” is made up of many of these cells wired in series to increase the voltage to make it high enough to do some useful work, such as charging batteries, and many of these panels can be wired together to do such things as supplying power to a building, or even supplying power to the utility grid.
Q:how efficient are flexible solar panels?
Up to now, it has very poor efficiency, about 5% to 23%.
Q:how long does it take for a solar panel to make one watt?
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Q:What should the voltage be on a small marine solar panel?
If it's only reading 0.2 volts, then the panel is burned out. What you can do is look for a nameplate on the panel, then try to look it up on the internet. Hopefully that will say what the voltage is supposed to be. You are right in that a panel intended to charge a 2-volt battery should read about 8 volts open circuit out in daylight, even if it isn't pointing straight at the sun. Is it a flexible rubber panel? Those are notorious for dying after just a couple years.
Q:Has anyone had roof problems caused by rooftop solar panels?
Rooftop solar panels might cause all sorts of maintenance or poor installation problems but I rather doubt at this point if we can say that there is an issue with solar panels in general that will cause a problem with the roof. Rather solar panels tend to shade a roof on its most exposed side. Without solar panels southern facing roofs will wear out faster than northern facing roofs. Installed solar panels will tend to make the roof last longer.
Q:installing solar panels on roof?
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Q:Solar Panels power help?
You have to look carefully at your battery choice. If you use lead-acid, use only the sealed type. Then you need to select a battery charger that is tailored to that battery type. If you want to run 700 watts for 6 hours, that is 0kwhrs. A 200 watt panel will take 50 hours to charge that, probably more like 70 to allow for losses. Even is S CA you don't get 70 hours of sun per day. Even for 3 hours of nite use, that still needs 25 hours of sun. So you need much more than a 200 watt panel. Bottom line, you need to calculate your needs much more carefully. PS, 700 watts is very large. Check it. Are you using all that stuff at the same time?
Q:solar panels, help?
This is pretty much an exercise in knowing units and dimensional analysis. Watts are in Joules/second. So every second a square with the area(meters^2) of meter^2 receives 380 joules from the sun. In your case the square is the solar panel. So find the area of the solar panel in m^2. If you multiply area times intensity you can see that the meters cancel out and you are left with Watts(J/s). Since you want the Joules received in an hour you again multiply by how many seconds are in an hour. Leaving you with joules. What you have now is the total energy, but your solar panel is only 26% efficient, so just multiply by .26 and you will have your energy.
Q:Can I plug a solar panel into a wall socket to lower my electric bill?
You're quite right that the solar panel can't be directly connected. I sense that you want to start small, but unfortunately, it's hard enough to make a system with a dozen or more panels pay back. (It can, we have a system...) But with just one panel, maybe a small one, the economy of scale is gone. You need to buy a grid-tie inverter, which watt-for-watt will be more expensive than a regular size one, and for a small panel, the $$/watt value will be poor. There are some [illegal in most places] tiny grid-tie inverters that I see advertised on the web from time to time, with an ordinary plug that goes into the wall. Those are generally against electrical codes, and the danger is real. There is also a crop of micro-inverters being sold by companies such as Enphase. These are legitimate products, but will still be costly per watt, and ultimately, it will be hard to have a net savings over time with just one panel. Have you already taken the conservation steps like LED light bulbs, efficient appliances (especially refrigerator), insulation, and using a power strip to turn off loads that are not being used? That stuff isn't sexy, but saves money fast.

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