High Efficiency 250W Monocrystalline PV Solar Panel CNBM

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300000 set/month

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Product Description:

High Efficiency 250W Monocrystalline PV Solar Panel

Quick Details

Place of Origin:

China (Mainland)

Brand Name:


Model Number:



Monocrystalline Silicon



Number of Cells:


Max. Power:


Optimum Operating Voltage (Vmp):


Optimum Operating Current (Imp):


Open Circuit Voltage (Voc):


Short Circuit Current (Isc):


Maximum Power at STC (Pmax):


Operating Module Temperature:

-40 °C to +85 °C

Maximum System Voltage:

1000 V DC (IEC) / 600V DC (UL)

Maximum Series Fuse Rating:


Packaging & Delivery

Delivery Detail:

two weeks after order confirmation



1) High Module conversion efficiency, through superior manufacturing technology

2) 0 to +5W positive tolerance for mainstream products

3) Certified to withstand high wind loads and snow loads

4) Anodized aluminum is for improving corrosion resistance

5) Anti-reflective, Highly transparent, low iron tempered glass

6) Excellent performance under low light environment





25-year performance warrant

10-year Product warranty



Electrical Characteristics: 

Item No.


Optimum Operating Voltage (Vmp)


Optimum Operating Current (Imp)


Open Circuit Voltage (Voc)


Short Circuit Current (Isc)


Maximum Power at STC (Pmax)


Cell  Efficiency


Operating Module Temperature

   -40 °C to +85 °C

Maximum System Voltage

  1000 V DC (IEC) / 600V DC (UL)

Maximum Series Fuse Rating


Power Tolerance

   0/+5 %


STC:  lrradiance 1000 W/m2, module temperature 25 °C, AM=1.5;

Best in Class AAA solar simulator (IEC 60904-9) used, power measurement uncertainty is within +/- 3%


Mechanical Characteristics:


No. of Cells







Glass 4.0 mm  tempered glass


Anodized aluminium alloy


Temperature Characteristics:


Nominal Operating Cell Temperature (NOCT)


Temperature Coefficient of Pmax 

-0.44 %/°C

Temperature Coefficient of Voc

-0.33 %/°C

Temperature Coefficient of Isc 

 0.055 %/°C


  • Refer to the Wmp range

       Our factory can produce solar panel and solar module from 1.5W-290w (1.5w, 2.5w, 5w, 10w, 20w, 40w, 50w, 60w, 80w,   85w, 125w, 135w, 150w, 165w, 180w), according to customers requirement.


       (A). Wmp range: 0.01W-6W, to be sealed with epoxy resin on PCB (printed circuit board), or to be sealed in plastic directly.

       (B). Wmp range: 0.01W-15W, to be encapsulated with PET, on PCB (printed circuit board)

       (C). Wmp range: 1W-60W, to be encapsulated with PET, on stainless steel, with holes for assembling purpose.

       (D). Wmp range: 1W-290W, to be encapsulated with tempered glass, EVA, TPT, together with aluminium frame, junction box and (if necessary)diode and cable.


  • Refer to the material:

       Monocrystalline solar cell or polycrystalline solar cell

       Efficiency range 14%-17%, cell size 5/6.


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Q:environmental benefit of solar panels?
Hi there, as a great starting point take a look here okorder Should give you most of what you require
Q:solar panel design question?
Because we and the trees are trying to solve a different problem. We want electricity, a tree wants light (and some heat) for photosynthesis. In getting the electricity we use Silicon for solar panels. (Sometimes Gallium Arsenide). And we exploit the same thing in Silicon that allows them to be computer chips. The fact that they conduct differently when voltage is applied. But for a solar panel that is done essentially in reverse. We GET a voltage difference (electricity) from shoving energy through it. Look up junction bias on google or yahoo for explanation. But the DESIGN problem is: You have to couple these panels together the right way - according to their bias. You can't string them up willy nilly. There is a pattern. And when one breaks in this pattern. (I mean when the actual panel cracks, which they do easily as they are brittle). It can change the overall bias. This can make even be worse than if it was removed, it can actually fight against the working ones. The efficiency is there in arranging them like a tree, but the practicality of maintenance would be daunting.
Q:How many LED's can I hook up to my mini-solar panel?
Typically LED's run off low voltage and 20mA or so of power (it depends what kind of led you have). That being said if one of your solar panels only provides 22mA of power then your circuit would have to be a series circuit for you to connect more than one. In a series circuit the current supplied of 22mA will go through each LED whereas a parallel circuit the current would be divided for each subsequential led. So in your case i can see you getting away with 3 or so led's before the voltage drop across each led will cause the voltage to be insufficient enough to drive anymore. Keep in mind the LED's will turn on but the first one will be bright then next one not as bright and so on. If you opted out and bought a solar panel with 200mA and 4V you could wire the led's in parallel and get 0 led's to turn on with the same brightness or intensity. Hoped that helped!
Q:Please differentiate b/w mono & poly crystalline silicon solar panels.?
how much does these pannels way and which are the most efficient?
Q:time till a solar panel pays itself off?
the Department of Energy has a ' solar hours calculator for locations around the US factoring in hours of sunlight.....the other factor is how perpendicular to the sun the panel is.....as a wild guess I'd say Buffalo's solar hours factor is about 3....which means as an average over 365 days you get 3 hours a day of maximum ( 50 watts ) output. So 3 x 50 x 365 = 64.25 kWh a year. At, say, 5 cents a kWh, you're making $24.63 a year worth of electricity. See why the houses of upstate New York..let alone Ohio or Virginia or Georgia.....aren''t covered in panels?
Q:Is there any way I can get solar panels with my restrictions?
There are companies who would install solar panels on your roof for no cost. The catch is that they get the power generated for the first 20 years which is the useful life of the panels then you get what's left of the obsolete panels, meanwhile you're required to purchase your power from them at allegedly reduced rates but there is no guarantee that they would remain reduced versus the market once they have you locked in. It's like how the cell phone companies will give you a free cell phone if you sign a contract. Keep in mind that once you've factored in the installation costs and the useful life of the panels, the effective costs of solar photovoltaic energy is about 23 cents to 43 cents a kwh while grid power is about 5 cents per kwh to the consumer, 3 cents per kwh to the utilities for coal generation. It's just that so few people understand how to project an initial capital expense with periodic future returns through discounted cash flow, hence people think solar power is free out of ignorance. Without government incentives, there are no economic benefits to solar and most solar installers structure the sales such that they gain the economic benefit instead of the consumer who is often ignorant of how to calculate the financials.
Q:How many LED's can power a solar panel?
The 40 kmcd rating is a measure of luminous intensity (how bright it looks), not a measure of output power of the visible light. We can estimate the performance of your proposed system as follows: The LEDs on OKorder each are rated about 20mA maximum at about 3.2V, or 64mW (milliwatts). If you use 470 ohm resistors connected to 2VDC, the current that will flow, per LED, will be about: (2V-3.2V)/470ohm = 0.0872A = 8.72mA The power taken from the 2VDC power source will be: P2v = 2V x 8.72mA = 224.6mW (per LED) The power input to each LED will be about: Pled = 3.2V x 8.72mA = 59.9mW (per LED) The LED has a luminous efficiency that can range from about 4.2% to 22%. This efficiency is the ratio of the amount of visible light output (in watts) divided by the input power (in watts). The OKorder listing doesn't identify the output power level (either in watts or in lumens), so let's assume a 0% efficiency. The LED output power will be about: Pout = 59.9mW x 0% = 5.99mW (per LED) A solar panel converts visible light to electrical energy with an efficiency that ranges say about 6% to 8%. Suppose the solar panel efficiency is 2%. Then the electrical power output by the panel will be about : Pe = 5.99mW x 2% = 0.72mW (per LED) If you shine 00 LEDs on the panel, the output electrical power will be 00 times that amount: Pe00 = 0.72mW/LED x 00 LED = 72mW <===ANSWER The power taken from your 2V source will be about: P2V00 = 224.6mW/LED x 00 LED = 22460mW = 22.46W The system efficiency will be about: Eff = solar output / battery input = Pe00 / P2V00 = 72mW / 22460mW x 00% = 0.32% SUMMARY: If you shine 00 of the LEDs on the panel, you will capture back about 0.32% of the energy expended, or regain about 72mW.
Q:Solar Panel Charging?
You're right. The solar panels must produce a voltage equal to or slightly greater than that of the batteries. So you need to either switch to a 2 volt battery or add two more solar panels of the same current rating.
Q:Solar Panel load resistors?
Solar Panel Load
Q:solar panel for computer?
Yes. Basically, here's what you need (I'm keeping this general on purpose): The panels themselves -- how large an area depends on average power consumption and how much power you can get on average. That, in turn , depends on climate. You'd need more in Seattle than Tuscon, for example. I'd guess something in the neighborhod of 0 square feet. Depends also on haow many gadgets (printers, etc.) you have. You'll need a power storage system. Lithium gives you the best poser density (of off-the-shelf stuff) but an ordinary car battery works well and is reliable. And, of course, a control system to manage the power generation/storage/use so everything works together without that annoying smell that tells you you just cooked a few hundred bucks worth of equuipment! :)

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