Solar Polycrystalline Panels Max Power250W

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Product Description:

Solar Polycrystalline Series

Our designing philosophy is making solar product easy to use and convenient to maintain. We adhere to "develop inverter and controller" as our core technology, and built up solar product from 0.5W to 100KW into standard and mass production, meeting most customers' needs in this field.


Product Name : 250W solar panels
Max Power(W) : 250W-36P
Dimension(mm) : 1960*986*50 (mm)
Weight(kg) : 23.5 (kg)
Max Current(A) : 6.94 (A)
Max Voltage(V) : 36 (V)
Short Circuit Current(A) : 7.78 (A)
Open Circuit Voltage(V) : 43.2 (V)
Number of Cell (PCS) : 6*12 (PCS)


Contrast with other model solar panels

Solar  Polycrystalline  Panels Max Power250W





Maximum Power (W)




Optimum Power Voltage (V mp)




Optimum Operating Current (I mp):




Open Circuit Voltage (Voc)




Short Circuit Current (ISC)




Cell Efficiency (%)




Module Efficiency (%)




FF (%)



90% of 10 years, 80% of 25 years.

Standard Test Conditions

AM1.5  1000W/m225 +/-2ºC

Bypass Diode Rating (A)


Cable & Connector Type

Pass the TUV Certificate

Brand Name of Solar Cells


Size of Module (mm)


Solar Cell


Backing (Material)


Frame (Material Corners, etc.)


Number of Cell (PCS)




Junction Box Type

Pass the TUV Certificate

Tolerance Wattage (e.g. + /-5%)


Front Glass Thickness (mm)


Surface Maximum Load Capacity


Allowable Hail Load

23m/s, 7.53g






Temperature Coefficients of ISC(%)ºC:


Temperature Coefficients of Voc(%)ºC:


Temperature Coefficients of Pm(%)ºC:


Temperature Coefficients of IM(%)ºC:


Temperature Coefficients of VM(%)ºC:


Temperature Range

-40ºC to +85


We have organized several common questions for our clientsmay help you sincerely

①What price for each watt?

It depends on the quantity, delivery date and payment terms,

②What is your size for each module? Can you tell me the Parameter of your module?

We have different series of panels in different output, both c-Si and a-Si. Please take the specification sheet for your reference.

③Can you provide the peripheral products of the solar panels, such as the battery, controller, and inverter? If so, can you tell me how do they match each other?

Yes, we can, we have two companies for solar region, one is CNBM International, the other is CNBM engineering Co.

We can provide you not only the solar module but also the off grid solar system, we can also provide you service with on grid plant.

④What is your warranty system?

 Our product  performance guarantees for 25 years

• 12 years guarantee for workmanship

• Timeliness of delivery

• Quality Products certified (TÜV, UL, CE, ISO)

⑤How do you pack your products?

We have rich experience on how to pack the panels to make sure the safety on shipment when it arrives at the destination.

⑥ Can you do OEM for us?

Yes, we can.

⑦How long can we receive the product after purchase?

In the purchase of product within three working days, We will arrange the factory delivery as soon as possible. The pecific time of receiving is related to the state and position of customers.Commonly 7 to 10 working days can be served.


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Q:Need help with Solar Panels (FAQ's and opinions)?
This is a photovoltaic produces electricity from incident solar radiation. Solar thermal panels produce heat, and they are usually assists for hot water heating systems. Solar thermal panels have piping in them instead of semiconductor cells like photovoltaics do.
Q:What is the anatomy of a solar panel?
You've probably seen calculators that have solar cells -- calculators that never need batteries, and in some cases don't even have an off button. As long as you have enough light, they seem to work forever. You may have seen larger solar panels -- on emergency road signs or call boxes, on buoys, even in parking lots to power lights. Although these larger panels aren't as common as solar powered calculators, they're out there, and not that hard to spot if you know where to look. There are solar cell arrays on satellites, where they are used to power the electrical systems. You have probably also been hearing about the solar revolution for the last 20 years -- the idea that one day we will all use free electricity from the sun. This is a seductive promise: On a bright, sunny day, the sun shines approximately ,000 watts of energy per square meter of the planet's surface, and if we could collect all of that energy we could easily power our homes and offices for free.
Q:can a small solar panel be charged with lamps?
Sure!...did you ever use a solar powered calculator indoors under a lamp?? It works just fine.
Q:How much Silver do we need for Solar Panels?
Some research has shown that small amounts of silver can improve the efficiency of solar panels. But this appears to be in the research stage and applies to the the thin film solar cells. Some solar panels makes use silver as the wiring in kind of a screen printing process, but you don't need to use silver, you can use copper or aluminum using different techniques instead. Generally the metal used is in small amounts and not a majority of the cost of the solar panel.
Q:can I connect my pool pump to a solar panel?
a minimum of 4000 watts, 5KW may well be extra desirable and you do choose an inverter and batteries and in all hazard a variable frequency force till the pump motor is rated for DC which I doubt. suited answer is touch a close-by electrician to do the artwork.
Q:Why dont we have a gigantic solar panel system in the warm states,stretching miles across to supply the usa?
Claire's argument doesn't make much sense to me either. First; Claire is talking about the second law ('you can only lose or break even'), not the third law ('you can't get to absolute zero'). Easily confused, but not that important! Putting a solar panel down _can_ increase the heat absorbed by Earth. Everything has an 'albedo' (the proportion of incoming light it reflects), and Earth's average albedo is about 0.3 (ie 30% of incoming light is reflected, most of which leaves the atmosphere straight away). By putting a 0.05 albedo solar panel down on a 0.3 albedo surface, you increase the amount of sunlight that is absorbed by Earth and therefore contribute to warming. This heat is re-radiated at the Earth's temperature, in the right wavelength range to be absorbed by greenhouse gases too. If you put a panel down on equatorial ocean, or a black roof, however, there is pretty much no effect (since the albedo change is small). Also, the heating effect only lasts as long as the panel is there. Most panels are estimated to last 50 years, meanwhile CO2 has a mean lifetime of 00+ years. I did some maths and found that the 00 year averaged change in radiative forcing for solar panels was negative compared to the UK electric grid, because the reduction in CO2 emissions has a larger effect than the change in albedo. If I have spare time tomorrow I'll redo the calculations and share them. The albedo change has to be considered though!
Q:can a l.e.d light power a solar panel?
While I understand Search's answer, because it was also my first reaction, am I wrong in thinking that this is some sort of science fair project, for which you need to power a solar panel indoors as though it were being illuminated by the Sun? The question at least makes sense in that context. Solar panels provide modest power even from room lighting, sometimes calculators are powered by small panels, but that is a tiny amount of current. . You'll probably do better by asking this question (a bit more clearly) over in Engineering. It's not really an Astronomy Space question, though there may be some crossover between the two groups of users. Meanwhile, while some white LEDs can be pretty dazzling to the eye, I don't know how much actual power they are pulling down compared to what you'll need the panel to generate, but I don't see why it shouldn't work. I just don't know how many LEDs you would need. . .
Q:Solar panels?
Yes there are lots available in many different types for instance take a look at
Q:Solar Panels heat absorption?
Solar photovoltaics require light, any kind of light. A torch would work, for example. The effect of concentration depends on the amount of light and the material you're shining it on. In CdTe, warmer temperatures and more intense light may lead to better performance. In silicon I think the opposite is true (I don't know though, I've only done research work with CdTe). It depends on properties of the semiconductor, like its band structure. To get an 'order of magnitude' estimate, you may assume a constant efficiency of solar cell so total amount of light (= area * intensity) largely determines the output in standard operating conditions.
Q:How much power does the solar panel produce?
I sincerely doubt that you have a solar panel that is 4% efficient at converting sunlight to electricity.

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