250 Watt Photovoltaic Solar Panel

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Min Order Qty:
1000 watt
Supply Capability:
500000 watt/month

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Item specifice:

Material: Polycrystalline Silicon Max. Power(W): 200 Number of Cells(pieces): 96

Product Description:


1) Product name: solar panel / module

2) Solar cell: Mono-crystalline / Poly-crystalline / Amorphous

3) Tempered glass laminated with aluminum frame

4) Life time: 20 - 25 years

5) Temperature co-efficiency:  A=+1,46mA B=-79mV, Rp/p=-0.43

6) Power specification at 1kW/m 2, AM 1, 5

7) Output cable: multi contact connectors

8) Construction:

     a) Front: High-transmission 32mm tempered glass

     b) Back: TPT

     c) Encapsulant: EVA

9) Frame: aluminum

10) Certification: CE, TUV


1. Nominal 18V DC for standard output.

2. Cable connectors for easy installation.

3. Outstanding low-light performance.

4. Splendid aesthetic appearance and easy installation.

5. High efficiency & high stability.

6.Advanced EVA encapsulation system with TPT back sheet to improve product modules

7. Design to meet unique demand of customer.

8.25 year module output warranty.

9. Rugged design to withstands high wind pressure and snow load, easy installation.

10. Designed to comply with rigorous operating conditions, including test. 


250 Watt Photovoltaic Solar Panel

250 Watt Photovoltaic Solar Panel



Electrical Characteristic of Mono Solar Cells


CNBM Solar Polycrystalline Series II   (235W—245W)











12 yrs free from defects in materials and   workmanship

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

TUV(IEC61215&IEC61730), CE, UL


 Photovoltaic/solar/ green   energy/energy saving


1.High efficiency crystalline silicon 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. AI frame: Without screw, rner   connection. 6 holes on the frame can be installed easily.

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

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

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

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

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


Packaging Details:

26pcs/pallet, 28pallets/ 40HQ 

Our   solar panels are packed in cartons, and then pallet. 

Shipping by sea or by air are both ok, it up to customer’s chose.

We’d like to inquiry the freight cost for customer after be informed exact quantity and destination address.



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:harbor freight solar panels ?
Actually, if you are looking to start slow and inexpensive, they are an economical way to get your feet wet, so to speak. I also tried the make them yourself kits, where you get a stack of cells, a frame and solder and you have to get the glass and assemble it yourself. I combined the Harbor Freight kit with one of those panels. Problems you will run into start with the kit having no inverter and not much information on any kind of power storage, you get to work that out for yourself. I initially wired them to provide all the power for the ceiling mounted lights in a small house, on a totally independent circuit, using 3 car batteries for storage. It worked perfectly, however the code inspector I got from the City could NOT fathom that my system had no connection whatsoever to his grid and would not pass it, even though I showed him the separate breaker box that was not supplied by the line coming into the house for the rest of the power. I finally gave up on him and put the lights back into the main system and use the solar setup to charge cell phones and occasionally power a lamp, as the inverter has plugs right on it. It keeps those car batteries fully charged going on 4 years now, with no issues detected at all.
Q:H2 as an Alternative Fuel Source using Solar Panels?
Currently solar panels are rated at about 5 percent efficiency. That means that about 85 percent of the solar energy that is falling on it, is wasted. Electrolysis is also about 67 percent efficient. So the TOTAL amount of solar energy you would have converted into hydrogen is 67 percent of 5 percent. Using my calculator that comes out to: about 0 percent total efficiency. About 90 percent of your solar energy gets wasted in the process. A better alternative to solar panels would be solar powered sterling generators. Sterling engines are EXTERNAL COMBUSTION engines, like the old fashioned steam engine, and can be run off any heat source - including the sun. Heat from the sun is focused using parabolic mirrors, and the efficiency of a sterling engine / generator combination is rated at about 30 percent. Your TOTAL efficiency - both solar sterling and electrolysis combined - would be around 20 percent. If you are dead set on using hydrogen? Even though there are better alternatives? Such as alcohol? Then I would suggest storing it in titanium dioxide pellets. This way you can store the hydrogen, without it being in danger of exploding. You can ALSO ram a hydrogen container like this into a solid brick wall. Once again? Without fear of an explosion. Numerous studies have been conducted on this. As for controlling the exact measurements? Nothing in the air-fuel ratio of a car - - or the timing - which you are also going to have to change - needs to be exact. A good enough approximation will do. As for how you get your measurements? You need to compare the density of gasoline vapor with hydrogen gas. A comparison of the molecular weight of gasoline - - as compared to the molecular weight of hydrogen - should get you started in the right direction for this.
Q:Which is Better: DIY Solar Panel vs commercial grade solar panel?
On my website you can read my story of how my dad made solar panels at home and now he pays nothing to the electric company.
Q:Tips for convincing my school to put solar panels on the schools roof?
When okorder.com/ Good luck but the best way to win is to find a way to get it done and then they can't say no.
Q:solar panels and calculations?
The okorder.com The reference section has all the formulas you are looking for and there is a list of dealers by state, plus various state rebate information. Yes, you can hook up different panels to the same system. There are special controllers that regulate the voltage. I'm more of a hands on nuts and bolts guy so I can't help you with the formulas and engineering explanations. Another great place to get information is Home Power Magazine. You can get the issues online or in print. Thanks for going solar!
Q:why wont my solar panel make my dc motor work?
A 2V battery designed for a current max of 200mA, can turn on a 2W lamp. If you want to turn on a 2V 200Watt lamp, you need a bigger battery capable of providing 6 amps!! Similarly the solar panel you have can produce a voltage, but when connected to a motor, the voltage might drop to much lesser value!! So apart from voltage you also need to know current taken by motor. Further, motors have a habit of not starting, but once prodded (mechanically rotate the shaft with hand), they may run. If you are in that border area, give a turn to the motor and see.
Q:Anyone who knows or has Solar Panels?
It shouldnt be a problem being where it snows, as long as you dont mind clearing it off a lot to recieve maximum efficiency! Or else it should work anyways but not as well covered with snow.
Q:How to make electricity from the sun without using solar panels?
Solar cells are the cheapest way to produce electrical energy directly from the sun at this time. All other methods are experimental and not something the average person would ever want to use. If you are an engineer with a background in designing you might be able to pull it off but odds are you are going to spend a lot of money doing development work and not produce much power. It is possible to build you own hot water collectors to provide your domestic hot water. It is a lot of work but if you don't have the money to purchase the collectors it is an option.
Q:how can i optimize power in a solar panel?
first place the panel so it is at right angles to the solar rays. Make sure none of the panel has any shade whatsoever. For best results use motor drives to keep it in that position as the sun moves across the sky. For overall maximum versus time, you need to be near the equator. Solar cells have a high internal resistance, so for maximum power transfer, you need a load of that same resistance. A good charge controller will use DC-DC converters to provide that load. .
Q:is my solar panel big enough?
If a car battery contains 50 amp hours of charge at 2 volts, that's 600 watt hours of energy. divided by 34.03 watts, 7.63 hours to charge completely in direct sunlight. You don't want to connect them all in series. You want about 4 or 5 volts to charge a 2 v battery, so you should connect groups in parallel, and connect those groups in series to make your voltage. You'll end up with the same amount of power, lower volts and higher amps. It will work for trickle charging your battery if it's not too far run down.

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