Polycrystalline Solar Panels for 250W Series

Ref Price:
$0.50 - 0.65 / watt
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TT or LC
Min Order Qty:
6250 watt
Supply Capability:
40000000 watt/month

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Product Description:

1.Structure of  Polycrystalline Solar Panel for 250W Series

Polycrystalline Solar  Panel  for 250W l : High efficiency crystalline solar cell. Even if under the weak light, the solar module can produce maximum power output.

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

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

IV AI frame: Without screw, rner connection. 6 holes on the frame can be installed easily.

V Junction box: Multi function junction box with water proof.

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

VII Good performance of preventing from atrocious weather such as wind and hails.

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

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


2. Standard Test Conditions of Polycrystalline Silicon Solar Panel:

The opto-electrical specifications shown below are stabilized values being measured at Standard Test Conditions, Irradiance: 1000W/m2, Spectrum: AM1.5 at 25°C, The info below is subject to manufacturing tolerances. Where appropriate minutes of measurement are available and are used for the dimensioning of the installation.

Advantages of Monocrystalline Silicon Solar Panel

• CNBM Solar performance guarantees for 25 years

• 12 years guarantee for workmanship

• Timeliness of delivery

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


3. Solar Panel Images

Polycrystalline Solar Panels for 250W Series 


4. Solar Panel Specification


Polycrystalline Solar Panels for 250W Series

 Temperature Coefficient of Cells

Polycrystalline Solar Panels for 250W Series

 Mechanical Data

Polycrystalline Solar Panels for 250W Series


Polycrystalline Solar Panels for 250W Series


Polycrystalline Solar Panels for 250W Series

 IV Curve

Polycrystalline Solar Panels for 250W Series


5.Quality certification and certificate

Polycrystalline Solar Panels for 250W SeriesPolycrystalline Solar Panels for 250W Series

Polycrystalline Solar Panels for 250W Series


Polycrystalline Solar Panels for 250W Series

Polycrystalline Solar Panels for 250W Series

Polycrystalline Solar Panels for 250W Series


We have organized several common questions for our clients,may help you sincerely:

1.  What’s price per watt?

A: It’s depends on the quantity, delivery date and payment terms of the order. We can talk further about the detail price issue. Our products is high quality with lower price level.

2.  Can you tell me the parameter of your solar panels?

We have different series of cells with different power output, both from c-si to a-si. Please take our specification sheet for your reference.

3. How 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.

4.  Can you do OEM for us?

Yes, we can.

5. How 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 perfect 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:Solar panel angle question..?
You did not give the details of how the legs are attached to the panel. I did some calculations on my right triangle analysis application. Based on an assumption that the legs are vertical and attached to the bottom of the panel top, i calculated the legs must be 6.97 inches long. This compares favorably with the 8 inches you quoted. t If my assumption is true, the leg length for a 7 degree angle is 2.925 inches. The configuration, if my assumption is correct, will be a right triangle. The hypotenuse (longest leg of the triangle) is the panel length and the vertical legs are the supports. If my assumption is incorrect, edit your question to detail the support /panel configuration. TexMav
Q:Tell me the guidelines for making solar panels?
If you're expecting to use them for anything other than a science fair project, don't bother. In order to produce any significant amount of power, solar panels have to be made of complex materials and coated with special coatings. If you want to power anything with them you'll need an inverter. Solar is not a DIY project (no matter how much those scam kits claim). If you're serious about solar, call your local solar installer and talk to them about it.
Q:Why are solar panels still so expensive?
Photo okorder.com/... Notice it costs over $200 and it takes up a sizable amount of space. Plus you have to expose it to bright sun light. Over all this is not something the average consumer wants to spend money on or fuss with. If something is expensive, difficult or inconvenient to use then people won't use it. Just the basic economics of such a device limits its sales never mind its functionality and usability. Even if you made a small one buit into the cover to extend the battery you won't get much of an extension and you will increase the cost of your laptop. Consider how people shop, will they buy the more expensive laptop for a questionable amount of battery extension? Mass production can lower costs but in order to mass produce something you need a demand that will consume what you produce. But if no one wants the item because of the aforementioned issues than you can't justify mass producing the item. This is like the classic which came first Chicken or Egg problem, one doesn't happen without the other. Cost reduction doesn't happen without consumer demand. This is where tax incentives, subsidies, low cost loans and energy buyback contracts come into play in order to spur on demand and jump start mass production. You could also make electricity extremely expensive by taxing oil and carbon so that a Solar Cell becomes economically competitive to very expensive electricity. Problem with this option is the negative impact high energy costs have on economic activity. Just look at what happened a couple of summers ago when gas hit $4/gal. To spur on demand we need to incentives the use of Solar cells (and other alternative energy). This can be done through several means such as subsidies, tax incentives, low interest loans, energy buyback contracts etc...
Q:What are the benefits of solar panel heating?
Solar okorder.com/
Q:do solar panels have to be in direct sunlight?
As above, but also make sure the panels you use will still produce if partially shaded. Some older panels will quit producing if you so much as put your hand over a small portion of it. Newer ones don't do this but are more expensive. As you may need more panel area to produce enough energy to fill a battery (if that is how you go) make sure you have the room/roof area for additional panels.
Q:What minerals are used in making solar panels?
Heating panels have aluminum for the frame, glass for the top, copper pipes running through them, and possibly some plastic parts. The raw materials are easily obtained. Copper is the most difficult to get probably, but it's not all that rare, since we used to make pennies out of it. A solar electric panel is similar, with the copper used for wires and interconnect instead of pipes. The actual solar cells commonly used are almost completely pure silicon, which is abundant worldwide. There are traces of other elements in the silicon like boron, arsenic or phosphorous - these are also inexpensive, and easy to get.
Q:Blocking diode for solar panel?
At least a 2 amp diode. rated above the 2 volts that are commonly found on the market. A blocking diode must be able to stop a higher current and voltage than the panel maximum. A diode will work on any voltage and current lower than it rating.
Q:how to know the voltage level of solar panel?
A okorder.com/
Q:Why did the voltage of a solar panel drop significantly after putting it through a step down voltage regulator?
you cannot treat the open circuit voltage of a solar panel like a voltage source (like a battery.) the load response of the panel doesn't behave that way. small panels and panels that are producing less than about .5A are very happy to have their output voltage pulled down to whatever they're connected to (typically zero.) I observed the same phenomenon when i connected a 2V 725mA panel to a 2V 325mA fan -- the open circuit voltage of 5V dropped to 3V when connected to the fan, and returned to 5V when disconnected. The easiest workaround is to use 2V of rechargable batteries in parallel with the panel so that the battery holds the 2V potential difference and the panel just supplies the current. any excess current charges the batteries, so you might consider whether or not you need some type of charge controller to prevent burning the batteries via overcharging. there are actually very few applications of solar panels connected directly to circuits that i have seen that have any kind of robust performance -- if they work at all, they eventually die/burn themselves out in a couple of months. the best robust designs always have a rechargable battery and charge controller somewhere in the power circuitry to buffer the load circuit from the panel. .
Q:what are some methods for capturing low voltage electricity from solar panels?
Put one more panel in series with other one to increase the voltage output during cloudy day.

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