CNBM Poly Solar Panel 300W A Grade with Factory Price

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Material: Polycrystalline Silicon Max. Power(W): 300 Number of Cells(pieces): 72

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CNBM Poly Solar Panel 300W A Grade with Factory Price

Production description

 solar panels that can always be pointed at the Sun even as the rest of the body of the spacecraft moves around, much as a tank turret can be aimed independently of where the tank is going.

Each module is rated by its DC output power under standard test conditions, and typically ranges from 100 to 365 watts. The efficiency of a module determines the area of a module given the same rated output – an 8% efficient 230 watt module will have twice the area of a 16% efficient 230 watt module. 

Depending on construction, photovoltaic modules can produce electricity from a range of frequencies of light, but usually cannot cover the entire solar range (specifically, ultraviolet, infrared and low or diffused light). Hence, much of the incident sunlight energy is wasted by solar modules, and they can give far higher efficiencies if illuminated with monochromatic light. Therefore, another design concept is to split the light into different wavelength ranges and direct the beams onto different cells tuned to those ranges.[citation needed] This has been projected to be capable of raising efficiency by 50%. Scientists from Spectrolab, a subsidiary of Boeing, have reported development of multijunction solar cells with an efficiency of more than 40%, a new world record for solar photovoltaic cells.

Currently the best achieved sunlight conversion rate (solar module efficiency) is around 21.5% in new commercial products[3] typically lower than the efficiencies of their cells in isolation. The most efficient mass-produced solar modules[disputed – discuss] have power density values of up to 175 W/m2(16.22 W/ft2).[4] Research by Imperial College, London has shown that the efficiency of a solar panel can be improved by studding the light-receiving semiconductor surface with aluminum nanocylinders similar to the ridges on Lego blocks. The scattered light then travels along a longer path in the semiconductor which means that more photons can be absorbed and converted into current. Although these nanocylinders have been used previously (aluminum was preceded by gold and silver), the light scattering occurred in the near infrared region and visible light was absorbed strongly. Aluminum was found to have absorbed the ultraviolet part of the spectrum, while the visible and near infrared parts of the spectrum were found to be scattered by the aluminum surface. This, the research argued, could bring down the cost significantly and improve the efficiency as aluminum is more abundant and less costly than gold and silver. The research also noted that the increase in current makes thinner film solar panels technically feasible without "compromising power conversion efficiencies, thus reducing material consumption".[5]

CNBM Poly Solar Panel 300W A Grade with Factory Price





Large solar power plant

Distributed plant

Product Feature

1.A grade high efficiency solar cells. 
2.TUV/UL/CE/CEC etc 
3.Fast shippment 
4.25 years warranty 



24pcs into one carton, 312pcs into a 20 foot container, 728pcs into a 40 foot container.

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Q:Do I need to run a ground form my solar panel?
Q:How does Solar Panels works and what is the cost of getting a solar panel installed.?
They consist of a semiconductor junction which has an uneven distribution of charge so it has an electric field in it. When light hits the material, an electron is knocked off from its parent atom and can move around the material. The electric field pushes it in one direction, et voila. You have current! (it's most complicated than that, but it needs quantum physics to understand). In summary, light goes in and DC electricity comes out of the panel. To use it in your house you will need an inverter as well, which turns it into useful AC. Then you need a way of using up the extra electricity you produce when it's sunny but you're not using power Some people use batteries, most people use 'grid tied' systems, plug in to the national grid and sell electricity to power companies that you're not using! Unfortunately, without major subsidies (like those offered in Germany, Japan and soon the UK), solar panels aren't likely to be cost effective. In the UK it costs about £5-6,000 to install a kWp of solar power and it will make about £90 of electricity a year. In California it's sunnier, so would make about £200 of electricity a year, but it's still very VERY expensive without subsidy. On the plus side, technology is improving. Thin film technology can be done at half the price, so I'd say hold on until thin film solar cells go up for sale (right now they only sell them to companies for big projects). Prices should drop by at least half in the coming years if they can make enough to sell to households - and at that price it'll be worth it in places like California.
Q:Are solar panels a good idea in Seattle Wa?
The solar rating of your area is Good so I wouldnt see the reason not to use it. In my area solar rating is very good I get all evergy from it plus even selling it. My payback time was very quick but... If you are not in a hurry or cant afford to spend a lot, wait till end of the next year when the new flexible panels are coming to the market. They are suppose to be a lot cheaper, enviromental friendly more effective than the ones on the market now. Check out MY Estimator. I think for USA users its the best help on the net. You'll see your costs, tax incentives can get info about local PRO's aswell. Often people are shy to ask quotes but solar is overpriced at the moment so spend your time finding the best deals. Also check where panels are made, their efficency; warranty is usually 20 to 25years. Surf the net- OKorder, OKorder then check companies who sell solar panels. Some even offer price fix if you see other place selling with better price. Good luck!
Q:Cars with Solar Panels?
There are lots of cars with solar panels, but they are all experimental. The problem is that the power required to run a car is a lot more than the limited number of solar panels can produce. The sail boat can use the solar panels as sails, to get power from both.
Q:Solar Panel - DC motor - Rated Power ? Functionality ?
solar cells are not rated in mah, they are rated in ma or amps. I'll assume this one is 50mA. Two in parallel will give you 300mA, so that will charge a 800mA-hr battery in 800/300 = 3 hours. Theoretically, in bright sunlight if the array is exactly at right angles to the sun's rays. The problem is, depending on the type of cells, the battery pack will need 8 volts or so to charge, and your solar cells won't deliver that. If the sun is at an angle, you may get only 3-5 volts. so you have to put them in series, so you will get only 50mA out of them, which will charge the battery in 6 hours of bright sunlight. Would two of my solar panels run this DC motor ? If the motor is .8 amps, you need the battery, the arrays are not near enough. Or are you attempting to replace the battery pack with the solar array? Your english makes that difficult to understand. If so, put them in parallel to get the 300mA, but that would run the .8 amp motor very slowly. If you had 2 of the solar panels, it might run at close to full speed if the sun is bright and shining directly on all the panels. But where did you get the .8 amps for the motor? The 800Mah rating of the battery has ZERO to do with the motor current. So the answer above is based on your number, which I suspect is totally wrong. .
Q:where to find used solar panels?
That's not a good idea. Solar panels wear out, and you probably won't know how worn out they are until you buy them and install them. Which is a little bit too late for most refunds. Your best bet if you're dead set on being foolish, is probably some place like craigslist.
Q:What happens if I put a 00v, .5A solar panel on a 2V, 450cca Gel deep cycle battery?
yes not good.. why would put 00volts to a 2 volt battery? the best you can hope for is to destoy the battery 3.6v max do not excide max amp on battery
Q:are solar panels worth buying?
There are different kinds of solar panels. The biggest division is between photovoltaic panels that produce electricity and thermal solar panels that produce heat for hot water and space heating. Commercial photovoltaic panels are from 8 to 24% efficient while solar thermal panels are from 60 to 80% efficient. Solar thermal panels especially for hot water have a much higher ROI (return on investment) than photovoltaic panels. A solar hot water system may have a payback period (when savings equal the investment) as short as 3 to 5 years while photovoltaic panels will typically have a payback period between 7 and 5 years. Solar panels especially in times of low interest rates may be a very worthwhile investment with a better return than you can find almost anywhere else. But they are also highly dependent upon your situation. Owning a home with a good southern exposure is a prerequisite.
Q:How much should a 00 watt solar panel cost?
On OKorder, they seem to be priced around $400. You do realize it takes more than just the panels...
Q:Should I buy solar panels?
Solar panels don't financially make sense. least not yet. They have a short life and the efficiency dies over time. IF you have the money then go for it, but if you have debt then financially you're probably better off paying off that debt. They're more of a luxury item than an investment.

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