315w Polycrystalline Silicon Solar Panels

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About us

We are a high-tech group wich specializes in solar products design,research, manufacture, sales,solar projects design and installation. 

Our national sales service covers seven parts, including northeast, north, east, middle, south, northwest and southwest, international sales covers five continents and over forty countries, including Germany, Italy, Spain, France, America and Brazil etc. 

Our present annual capacity is 6 million for wafer, 60MWp for solar cells,200MWp for solar modules and one hundred thousand for solar applications. It is expected that the annual capacity of 2012 will be up to 30 million for wafer, 300MWp for solar cells, 1000MW for solar modules and 2 million for solar applications. 


This installation Manual contains essential information for the electrical and mechanical installation that your must know before installing CUSTOMER PV modules. This also contains safety information you need to be familiar with .All the information described in this manual are the intellectual property of CNBM and based on the technologies and experiences that have been acquired and accumulated in the long history of CUSTOMER. This document does not constitute a warranty, expressed or implied.

CUSTOMER does not assume responsibility and expressly disclaims liability for loss, damage, or expense arising out of in anyway connected with installation, operation, use or maintenance of the PV modules. No responsibility is assumed by CUSTOMER for any infringement of patents or other rights of third parties that may result from use of PV module.

CUSTOMER reserves the right to make changes to the product, specifications or installation manual without prior notice.



To ensure proper system operation to maintain your warranty, observe the correct cable connection polarity(Figures 1&2) when connecting the modules to a battery or to other modules. If not connected correctly, the bypass diode could be destroyed.

PV modules can be wired in series to increase voltage. Connect wires from the positive terminal of one module to the negative of the next module. Figure shows modules connected in series .

 315w Polycrystalline Silicon Solar Panels


Data sheet

Maximum power


Cell type(mm)

Polycrystalline solar cell 156*156

Number of cell(pcs)


Manufacture site


Open-circuit voltage(voc)


Maximum power voltage(vmp)


Short-circuit current(isc)


Optimum operating current(imp)


Power tolerance


Module efficiency





27 kg



Frame Colar



Anodized Aluminum Alloy


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Q:Single crystal solar panels and polycrystalline solar panels
Monocrystalline silicon cells in the laboratory to achieve the conversion efficiency of 24.7%. Ordinary commercial conversion efficiency of 10% -18%. Monocrystalline silicon solar cells because of the production process problems, generally its semi-silicon ingots for the cylindrical into, and then through the slice -> cleaning -> diffusion knot -> remove the dice -> the production of electrodes -> corrosion around -> Reflective film and other workers made of finished products. General monocrystalline silicon solar cells four corners for the fillet. Monocrystalline silicon solar cell thickness is generally 200uM-350uM thick, and now the production trend is to ultra-thin and efficient direction
Q:how much money can I make a year for the electricy I sell from a solar panel?
Ultimately it depends on your utility and the country you're in. In countries like Germany, Spain and the UK, the utilities will pay a higher price for the power you produce then what they sell it to you at. Otherwise, in countries that don't have such arrangements, net metering is best where what you produce is discounted from the amount you buy per month therefore so long as you produce less than you use, you get the full retail rate, otherwise you may get only half the retail rate with some utilities. Obviously, the solar panels are rated and won't produce much more than the rated power, a 4 foot by 2 foot panel would usually be rated at 00 watts but in most situations will produce about 80 watts and would probably cost about $500 US installed. If you assume 8 hours of usable sunshine a day, 70% sunny days, a 25 year service life, monthly billing and 0 cents a kilo watt hour retail rate, you can expect at most a -.67% per annum return on your investment, that's a negative sign out front. Basically without any subsidies, you will lose money on the panel, sure you're get some money every month, about $.34 per month for that 00 watt panel but it won't make back it's money at at a rate of 0.0 per kwh. With subsidies it might be a good investment but it's still not a good deal without subsidies.
Q:how the power output of solar panels fitted to a house can charge?
Solar panels do NOT get charged, so the question is junk, or you misstated it. Solar panels are used to charge a battery bank, which stores energy for times when there is no sun. Then energy from the batteries is used, via an inverter, to power appliances in the house. OR do you mean how the power output of solar panels can CHANGE? In that case, they change when the sun moves, such as behind a cloud, or just changes angle in the sky, or goes out.
Q:How do you use solar panels?
Custom solar-heating systems are unique. Does yours have a circulating pump? Does it have a storage tank? Is the fluid that goes to the panels separated from the household water and transfers heat through a heat-exchanger radiator, and the fluid has antifreeze in it? If it does, is the antifreeze of the variety that won't poison your family if there is a leak? Does your system have a thermostat-controlled pump that turns on when the water in the panels are hot? Does it have a limit-thermostat to turn off the pump when water in the storage tank is hot? There are many more variations to operation of solar-heating panels. Find out who designed it or who knows how to operate it and ask them.
Q:How does a solar panel charge controller work for batteries?
The battery is probably 2v 7amp-hour, not 7 amp. 7amp-hour is basically just how big the battery is. You can charge that battery with as little current as you want, it'll just take longer. The 7 amp-hour tells you that it'll take a long time to charge. 7 amp-hour means it can discharge 7 amps for hour. If you were charging it at 7 amps, it would take hours to charge, but I don't recommend that. You could charge it at .5 amps for 4 hours or .25 amps for 28 hours. The smaller the current, the longer it will take, but it will get there eventually assuming your voltage is high enough (which it should be with the charge controller).
Q:Has anyone used portable solar panels for home use?
Most people think all one needs is some solar panels to make power. It doesn't usually work that way. On a boat it is easy because most boats use batteries and DC power. If all you want to do is make DC power, you will need a battery to hook your portable unit / units to. You can then use the battery to supply power to something that uses battery power. You may need a voltage converter if the device is not 2 volt. To use the power you get from solar panels for AC power like your house has, you need a regulator, inverter, and controller to change the DC output from the panel (s) to AC and then control the power into your electric system. You also need a unit from your electric company installed. A decent minimal solar system for an average house may cost around $5000 - $0,000. It will take many, many years to pay back. For a full-use system with generator, it will probably take $30,000 - $40,000 IF you don't use it for air conditioning. If you live in an area where you have a lot of cloudy days, it will take many, many, many, many years to pay back. The reason everyone isn't using solar power is because it is not cheap and has not been cost-effective for most situations. Most Americans would not like it's inconvenience at times. It is not new science. It is in use many places and well known. It is great for some applications and as fuel and electrical power cost increase it will be used more. Don't believe the media and hollywood. They are not interested in truth. They are just interested in making you believe their way. Study and learn.
Q:What size and watt solar panel?
I think that typical solar panels are 2'x4' and produce something like 800-000 wh per day. (That's 0.8 - kwh per day.) More in the summer, less in the winter, if they're aimed sort of at the sun. There are newer, more expensive panels that produce more. There are also thin film panels that are less expensive, and probably more sturdy. You then have a couple choices. In a house, you'd have an expensive inverter to connect to the utility power, so you can have power at night when your panels aren't generating anything. In a trailer, you want 2-4-6 deep cycle car batteries to store the power. Then you could have an inverter to convert that power to 20v AC, so you could use normal appliances. Or, you could buy appliances that run on 2 volts DC. Maybe a combination of both. You'll need to figure out how much power you're going to use, so you know how many panels and batteries you're going to need. The calculation is easy. Figuring out how much power you need is hard. You need deep cycle batteries because you can repeatedly charge them way up and run them way down. Ordinary batteries die fairly quickly when you do that.
Q:Information on making solar panels?
I doubt that you are going to want to learn how to dope your own silicon wafers, add contacts and laminate them into PV panels.  I also doubt that you're going to even want the various chemicals to make e.g. cadmium-based cells anywhere near your house (cadmium is a very toxic metal).  In other words, making your own solar panels is not an at-home project. You can buy solar panels based on cells of several different types.  A link to a Pricewatch-like website for current prices on solar panels is below.  Mounting panels to roofs or pole mounts, running conduit and wires, and installing battery banks and inverters are within the capabilities of skilled laypeople. More data at the links. Edit:  I am reporting all of Agua-Luna's cut-and-paste pieces as spam.  I encourage others to do likewise.
Q:Were solar panels made by copying how plants collect sunlight?
Not at all. Good guess but they are completely different processes. Solar panels use chemicals that create electricity when exposed to light. Photons pretty much add energy to the atoms and affect the electrons creating electricity. Feel free to look up how solar cells work online.
Q:New Prius; Solar panles a good design?
The solar panel option is for running a ventilation system while the Prius is parked outdoors, so the sun won't heat up the interior. Personally I think it's a good idea, especially if your car has leather seats-- There is nothing more unpleasant than getting into a car with leather seats that has been sitting in the sun for hours with the windows closed. Many a people in shorts have their thighs scalded on the leather seats that way. The solar panels are a luxury option, not standard equipment on the Prius. I think luxury cars like Mercedes and Cadillacs with leather interiors can use a system like that.

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