250W Poly Solar Panels Made In China and Low Price

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1.Widely using of the most popular and mature type of modulesfor on-grid system.

2.Specifications subject to technology and test conditions,GSUN Solar reserves the right of final interpretation.

3.Leading manufacturing technology in PV industry, strictly controlling the quality of raw materials and the process of producing.

4.100% EL inspection, ensures modules are defects free.

5.Cells binned by current to improve module performance.

6.Anti reflective glass. Not only to increase the light absorption, but also to make the module has the function of self-cleaning in water environment, effectively reducing the power loss caused by dust.

7.Outstanding performance in low-light irradiance environments.

8.Excellent mechanical load resistance: Certified to withstand high wind loads(2400pa) and snow loads(5400pa).

9.High salt and ammonia resistance.

10.Positive power tolerance:0-+5w.




Temperature Coefficient




Temperature Coefficients of Isc (%/℃)


Temperature Coefficients of Voc (%/℃)


Temperature Coefficients of Pmp (%/℃)



Performance Parameters



Max Power Voltage Vmp(V)   






Max Power Current Imp(A)






Open Circuit Voltage Voc(V)






Short Circuit Current Isc(A)








Mechanical Data



1655 x 992 x 40 mm



No. of Cells and Connections

60 (6 x 10)




Monocrystalline Cell 156 x 156 mm


624 Pcs/40ft(H) Container




5 years product warranty

10-years 90% of Min. rated output power,and 25-years 80% of Min. rated output power warranty


Comprehensive Certificates:

CE Certificate

ISO 9001:2008:Quality management systems


TUV and UL

IDCOL for Bangladesh



- High efficiency, multicrystalline silicon solar cells with high transmission

and textured glass deliver a module effi ciency of up to 16.0%,

minimizing installation costs and maximizing the kWh output of your

system per unit area.

- Tight positive power tolerance of 0W to +5W ensures you receive

modules at or above nameplate power and contributes to minimizing

module mismatch losses leading to improved system yield.

- Top ranking in the “TÜV Rheinland Energy Yield Test” 



1.CNBM is a state-owned company under jurisdiction of central goverment , one of  Fortune 500 .Just because of this ,we can get more support and resources from our government.So ,it is realiable .

2.CNBM's solar  products are high-qualified with TUV,UL,VDE,CE,ISO certificates. Our products ranges top in China.

3.Just as I mentioned in attahment ,we signed 500MW project with Urkan under the witness of our chairman Xi Jinping ,CNBM has ability to meet your large quantity needs,Our annual capacity is 1GW.

4.We can offer you a competitive price .Because you are our potential and valued customer .

5.We ,CNBM ,has our own factory :CNBM JETION SOLAR .We can also customize according to customers' need . You can google our factory .



FAQ:Why install a Solar PV system?

There are many reasons to install a Solar PV system now:

As a low risk investment the returns of between 8-10% net are hard to beat especially during this financial downturn where bank interest rates are below inflation (i.e. money in a savings account even with interest added is actually reducing in value).

Its good for the environment. Installing a small domestic system of around 1.5 kW would provide around 1125 kWh of electricity every year, this would save around half a tonne of CO2 annually.

Electricity can be supplied at the point of use. Reducing strain on our national grid network.

The system will run silently and so will cause minimal disruption.

There is very little maintenance required for a PV system.

After the initial installation costs, there are no further fuel costs.

PV systems are modular, and can be added to at any time.

FAQ:How long will a Solar PV system last?

The MCS accreditation scheme means that all panels installed under the scheme by approved agents will continue to generate for at least 25 years. Over this time their output will diminish slightly but they should still perform at 85% at the 25 year mark according to the scheme rules. Manufacturers have invested heavily to ensure their products meet and in most cases exceed these target


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Q:Solar panel placement idea?
It will generate MUCH more current if placed outside of the window. The best position is pointing directly south. Over the period of one day, you will get the most average sunlight pointing in that direction.
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:i am asking about the solar panels?
First of all, make sure that you are taking readings in the dark (with the solar panel indoors and covered). 0.433 is a reasonable forward voltage for a Schottky diode. Ideally, it diode should read open one way (possibly OL for your meter), and 0.4 the other way. If it's reading OL both ways, the diode is bad. You can either unsolder it or cut it out and verify that it is bad.
Q:Is heat a factor in how much energy is gained when using solar panels?
Not at all. You`ll generate more energy on a clear sunny day in the winter time than you would on a cloudy day in the summer.
Q:Is photovoltaic array another name for solar panels?
Photolvoltaic arry is the more technical name and the more accurate name for solar panels. Photo indicates light and voltaic indicates a voltage is produced.. Array is just a layout of these little light sensitive electricity generating panels. Actually Solar only idicates the SUN and not light in itself..
Q:Are our scientists making solar panels all wrong??
There are two basic types of solar panels. ) Thermal absorbers 2) Photovoltaics Thermal absorbers are black in order to convert sunlight to thermal (heat) energy. The whole idea is to capture all of the light with a dark surface, convert it to thermal energy and transfer the energy into your home for water heating or space heating. If you make the surface white or reflective, then the surface will absorb only a small fraction of the available light, hence the efficiency will be very low. In other words, the panel will not produce any heat. Photovoltaic panels produce electricity instead of heat energy. Photovoltaic panels are made from thin slices (“waffers”) of silicon with special coatings on the front and back surface. One of these coatings on the front is an antireflection coating to capture the light and channel it toward the silicon. Underneath the antireflection coating the silicon waffer is coated with other chemicals that convert the sunlight to electricity. The combination of these coatings gives the panel a dark color, usually blue or black. Here's the bottom line. If you want thermal heat or electricity from solar panels, the panels have to capture the light. When that light is captured, the surface appears dark because no light (or very little) light is reflected back to our eyes. It is not possible for a surface to be an efficient absorber, capturing all available light, and at the same time appear white or bright color or reflective to our eyes.
Q:how to charge phone with solar panel?
see u have to make ur own ckt for this ur solar panel generate DC if u want to charge ur phine then its convenient way to harge with ur charger for this do this search for net to convert DC-AC convertor since ur charger work on AC so when ur solar panel generate DC it convert into AC that will charge ur phone in ckt u need this thing filter and amp ie the DC voltage come from solar panel 2 DC to AC convertor 3 AMP for AC 4 filter for AC and u are done....... fine ckt from google.....
Q:Want to power this with solar panels?
You won't get very far with THAT lash-up. First of all.. WHY would you want to use diodes to drop the voltage.. they DRAW CURRENT and that is something you don't have to spare. That draw of 4.5v@0.66A (660 ma) comes out to just under 3 watts. You DO KNOW that you can get that 4.5 Volts by driving a NAIL into the THIRD CELL in a 6 Volt wet cell battery... right? and for what you are doing, you have more current available with a 6 volt battery than a 2 volt battery. Anyway, you could use two 6 Volt batteries and tap them at the 4.5 volt point then tie them in parallel, but you could still use the 6 volt solar panel to charge them. Trying to use an inverter is just an exercise in futility.. With TWO of the LARGEST DEEP CYCLE BATTERIES you can buy at AutoZone running in Parallel and being charged by solar panels.. if you hook a 75 watt inverter to them, they will go flat in about 4 hours of use during the night. This is not rocket science. Back when cars were changing over from 6 volts to 2 volts, I powered up more than one 6 volt car radio off a 2 volt battery... when you grow up as poor as I did.. you get inventive. I later used the same trick on the 24 volt electrical systems the Jeeps were using, to power up clandestine repeaters in places where no repeaters should have been. About 25 years ago I was living in the Denver area and built up a 0 watt 2 meter repeater on a split channel and took it up to Mt. Evans during the summer and hid it in a pile of rocks. I used tone control, so we were the only ones using it and, as I said, It was a split channel.. so it wasn't on a regular repeater channel. That thing was still running when I moved from the Denver area about 3 years later and for all I know, It's still up there on Mt. Evans (find the Brittlecone Pines and look towards that small peak about a mile to the west)
Q:how much do solar panel batteries cost?
Solar panels produce but do not store electricity. Most decent solar panels should last for a few decades. They may be used to augment grid power with out batteries. Batteries that are used for storage in a battery backup system are the same ones that are used if the power were hydro, gen-set or grid. There are a variety of battery types with different shelf lives. Some are warrantied for 0 years that may last 20, but they cost more. Exactly how long they do last will depend on the environment they are kept. The capacity and number of batteries will effect the cost. The link below will give you a very good overview of pros and cons of the various types, along with links to some manufacturers.
Q:Good Idea To Install A Solar Power Energy On A Restaurant?
not really 2 little 3 very little 4 depends on size of unit 5 depends on how much electricty you use 6 many

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