Poly Solar Panel for Solar System 245W-270W

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Item specifice:

Material: Polycrystalline Silicon Max. Power(W): 270 Number of Cells(pieces): 60

Product Description:

Poly Solar Panel for Solar System 245W-270W

CNBM is a high-technology enterprise which specially engaged in solar products development, production, sales and service. The range of our products includes solar cell series, solar module series and solar system from 100w-100kw.  We focus on establishing, equipped with advanced electronic equipment, backed by experienced technical support and professional high-quality managers. 


CNBM solar products meet with great favor of customers at home and abroad. We enjoy a good reputation from our customers for high quality, competitive price, prompt delivery and best service. There is a stream of developing, producing and marketing elite, who are full of experience of solar products research and development. They hold professional service and customers’ contentment as their aim, and take high efficiency, excellence, and top quality as the highest mission. 

Itemphotovolatic panel
Solar cells :

Poly-Crysalline 156×156mm

60pcs.(6×10) ---3 bus bars

Power Tollerance0 to +6W
Voltage at Pmax (Vmp)30.7V30.9V31.1V31.3V31.5V31.7V
Current at Pmax(Imp)7.98A8.09A8.17A8.20A8.31A8.41A
Open-Circuit Voltage(Voc)37.5V37.7V37.9V38.2V38.4V38.7V
Short-Circuit Current(Isc)8.58A8.76A8.87A8.97A8.99A9.10A
Maximum system voltage(VDC)1000(IEC), 600(UL)                                                                                               
Cell Efficiency17.0%17.3%17.6%17.6%18.0%18.3%
Moudule Efficiency15.00%15.40%15.70%16.00%16.30%16.60%
No. of Bypass Diodes (pcs.)3
Max. Seriex Fues(A)12A
Temperature coefficients of Pmax-0.45%/ ℃
Temperature coefficients of Voc-0.34%/ ℃
Temperature coefficients of Isc0.05%/ ℃
Nominal Operating Cell Temperature45±2℃
PS*STC Conditions (1000W/m*m ; 1.5 AM and 25℃ Cell temperature)

We have different model, size and power

50W, 100W, 250W, 300W, and any thing customized.

We have a wild range of successful project all over the world.


We have advanced, mature and stable supply production line. Support your request on solar market.

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Q:Will a 2W, 2V mono solar panel power up a laptop battery?
I'm afraid neither of these panels will do much for charging or running your laptop. If the power brick is supposed to emit 5 volts at 5 amps, that's 75 watts. Neither of those panels provides enough voltage and the power output is obviously far too small. The capabilities of solar power are vastly overestimated for small panels. Sunlight is limited to about kilowatt per square meter under ideal conditions (summer time, clear blue sky, for a few hours around noon in the US southwest). But consumer panels top out at about 5% efficiency, so your limit is 50 watts per square meter - in other words you would need about half a square meter, or about six square feet, of panel to provide 75 watts. And even under ideal conditions you will only get that much for a few hours each day. Also, the panel's voltage output is not regulated, so even if you find a panel that emits 5 volts (this would actually have to be made up of groups of 30 cells in series, as they emit half a volt each at most) you can't just connect the panel output into your laptop's DC in. You'd need a regulated DC-to-DC supply, and since that is not 00% efficient it will cost a bit of the power... now you need even more panel area. All in all, not really a practical thing to carry along on a camping trip.
Q:Can we cover up solar panels on our house with regular siding?
Strange question....most people now days are wanting to get solar panels and you are wanting to COVER them up. Are they not working? Have then removed before you put any siding in that area.
Q:what do we mean by efficiency of a solar panel?
Sunlight power panels had been the go-to choice for many years. They are among the many oldest, most efficient and most liable methods to produce electrical energy from the solar. Every module is made out of a single silicon crystal, and is more efficient, although more pricey, than the more moderen and less expensive polycrystalline and thin-film PV panel technologies. You can normally appreciate them through their color which is more often than not black or iridescent blue. The silicon crystals have lengthy existence and they may be able to withstand wear and tear with out degrading its workability. Additionally solar is a main source renewable vigour as far as the sunlight method is worried. Sunlight has little influence within the residing creature. So sun panel should be in practice
Q:How can you get affordable Solar Panels?
I okorder.com Hope this helps.
Q:Solar Panel - Battery Charger 2V?
How many amps will you need? Remember v x a = power. The way those trickle chargers work is by sacrificing some amperage to get up to 2 volts. If you can invent closer to ~3V range that solar cells naturally produce thing will likely work better. A sign or a light that doesn't need a lot of power will work. Automobile battery packs might take a month to charge. Solar-Powered 2V Trickle Chargers are used mostly to keep things like boat batteries in storage from discharging, not to charge them.
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:What solar panel do I need?
Your okorder.com/.. A solar panel of 40-50 square meters should suffice, at least in summer when the sun is high in the sky. It's about 500 square feet, or about 20 times 25 feet.
Q:What is the real cost of Solar Panels?
The cost of solar is measured in dollars per watt. That means the cost of a cell that can make one watt continuously in full sunlight. A friend of mine is starting a new job to set up a new solar cell factory and he said the present cost is $3 per watt, but that they expect to get that down to $ per watt in a few years. They can be damaged by weather, just like any regular roof. My insurance agent asked if I had solar panels, so it is a factor in insurance cost. I never heard of recycling or disposing of old panels, maybe because they are so new and last so long that not many are ready to be disposed of yet.
Q:Solar panels in the Bay Area?
PV Solar panels all work the same. There aren't any climate specific ones. There is enough sun in San Francisco to produce energy using solar panels however, the the same panels located in a sunnier area will produce more energy. Depending on the size of your system, you will probably need a few more panels than an area that receives more sun to produce the same amount of energy. But they will still produce energy, even on overcast days. The solar installers will make all the calculations to determine what size system you will need to produce as much energy as you want. In California, you don't want to produce more than you consume in a 2 month period because currently, you are not able to sell your excess credits back to PGE after your 2 month cycle. Your system will cost more to produce the same amount of power than my system because I have less overcast days than you do. You will have to make the decision if the cost is worth your while. I expect my system to be totally paid for in around 8-9 years, working in the cost of inflation for electricity. After that, I will be paying nothing for electricty for as long as I stay in my house.
Q:How to connect solar panels to batteries?
You okorder.com/

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