270W Polycrystalline 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.



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





A grade monocrystalline

TUV ,CEC,ISO9001/14000,CE and ROHS certified

Competitive price

Top quality

Prompt delivery


270W Polycrystalline Solar Panels


Packaging & Delivery

Packaging Details:carton box,pallet

Delivery Detail:12days

270W Polycrystalline Solar Panels


Company Simple Introduction:


CNBM Solar  is a world-leading and Vertical integrated manufacturer of high-performance with Silicon, Wafer, Cells, Modules, which convert sunlight into electricity for residential, commercial, and utility-scale power generation.     

The capacity of CNBMSolar  is reach to 1GW, and make sure each year our shipment capacity is more Than 700-800MWs, at the same time, we have set up the largest solar power station with our partner in Ukraine.       

CNBM is a Quality + Service oriented company with“Excellence at Each Step” approach, composed of the finest components from TUV and IEC-certified partners around the world, CNBM modules consistently undergo a variety of trials at the company’s Test & Development Centre, ensuring peak performance capabilities. The company is committed to develop and provide the world with clean and renewable energy to ease the energy shortages as well as human kind’s impact on the environment.



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Q:how much do commercial solar panels cost?
There okorder.com/ Why pay thousands of dollars for solar energy ($27,000 average cost) when you can build your own solar panel system for just a fraction of the retail cost. You can build a single solar panel or you can build an entire array of panels to power your whole house. Some people are saving 50% on their power bill, some people are reducing their bill to nothing. But what’s most impressive is that just by following these instructions some are even making the power company pay them!
Q:How much does 000 square feet of solar panels cost?
My Father-in-Law had around 300sqft of solar panels installed for the equivalent of around £3000 or $5000. These were just the cheap and relatively inefficient black plastic tubes that were installed on his roof. This was in South Africa where the labour rates are quite cheap. The system works okay and heats a 40ft x 20ft outdoor pool to over 30C in the height of summer. Rather than a pool heater, I think it might be good to look at an air source heat pump to help heat the water in Autumn/Winter when you don't get enough sun to heat the pool. These will be expensive (over $5000), but they will use less than 30% of the electricity of a standard electric water heater. Just the solar panels could cost you $5-20K including fitting.
Q:Finding the output of a solar panel?
You need full sunshine from the sun, or a lamp that will give a light spectrum similar to the sun, a volt meter, Milli-amp meter, and a variable resistor of 0 to 000 ohms. The voltmeter test leads go across the solar cell leads. The amp meter leads will be in series with the solar cell. Let's say, positive lead of the solar cell to the the positive lead of the amp meter, the negative lead of the amp meter to one terminal of the variable resistor, and the wiper terminal of the variable resistor to the negative lead of the solar cell. Slowly decrease the value of the resistor until the voltage from the solar cell just begins to drop. Take note of the amp meter reading. This is about the high end range of the solar cell. You might want to begin with a micro-amp meter for the current meter.
Q:What minerals are used in making solar panels?
Heating panels have aluminum for the frame, glass for the top, copper pipes running through them, and possibly some plastic parts. The raw materials are easily obtained. Copper is the most difficult to get probably, but it's not all that rare, since we used to make pennies out of it. A solar electric panel is similar, with the copper used for wires and interconnect instead of pipes. The actual solar cells commonly used are almost completely pure silicon, which is abundant worldwide. There are traces of other elements in the silicon like boron, arsenic or phosphorous - these are also inexpensive, and easy to get.
Q:How to build a solar panel?
To build an effective but cheap solar panel, you need some expert advice. I recommend you get your hands on the comprehensive e-book and video instructions by Michael Harvey. His guide is very easy to follow and it will help you make a complete solar power system for less than $200. He also teaches how to make windmills. I hope this helps!
Q:2V Solar panel directly to 2V inverter...and restult.?
An 300W inverter will draw 25 amps from a car battery but the solar panel will only produce about 4 amps. By drawing too much power with the inverter you lowered the voltage so much in the panels wiring that the amp rating on the internal wiring was exceeded and they melted. Next, time run the panel to a voltage regulator, then the regulator to a car battery, then the battery to the inverter.
Q:what do i have to study to install solar panels?
The only degree you will need is a degree in hard knocks.You will get it from a reliable contractor who has the skill and knowledge with the product.You may want to call the manufacture and see if there any in house schools that you could attend and be certified in their product.
Q:Solar panel battery charging?
it depends how big the panel is. a small trickle charger (like a 2W panel with built-in diode), just connect + to + and - to - (parallel) to trickle charge the battery. The diode will keep the batter from discharging through the panel when there is insufficient sunlight. for a large panel (like a 220W 24v panel), you best go through a charge controller. the charge controller has 2 leads for the solar panel input, 2 leads for the battery connection and 2 leads for the 2v load. just follow the instructions to connect the panel and battery to the controller, and MAKE SURE YOU USE THE REQUIRED FUSES. very straightforward stuff -- just RTFM
Q:Improvising Solar Panel Made from Old CD or DVD? Possible or not?
A solar electric panel? No. Solar electric cells, or more properly photovoltiac (PV) cells, are made from specially prepared (doped) wafers of silicon, much like transistors and diodes. CDs and DVDs are made from plastic plated with aluminum. They don't have anything to do with each other. Of course you can make a reflector out of CDs or DVDs, and you could use a bunch of them to focus sunlight on a water tank or something - this is called solar thermal generation. (That's what that ehow page is talking about, not generating electricity.) But there are much better things to use for mirrors.
Q:How can I regulate current from a solar panel?
Lithium batteries do have special charging requirements. I would recommend that you use the 2 volt charger that came with them to keep them happy. Automotive power systems can have voltages as high as 4.5 volts when the engine is running so there's no need to limit the output of the panel to anything less than that. Check with the charger manufacturer to see what it will withstand. Some will work with systems up to 24 volts nominal (up to 29 volts actual) found in larger commercial vehicles such as trucks and busses. If your charger will work with both 2 and 24 volt systems you might not need anything extra to use the unregulated output of the panel. Otherwise I'd recommend a shunt regulator to clamp the output of the panel to no more than 4.5 volts. That way it would dissipate (waste) very little of the panel's power, and even that would only be during those rare times when the panel is producing maximum output. Such a device could be as simple as a high power zener diode, a low power zener coupled with a power transistor, or a precision shunt regulator such as a TL43 coupled with a power transistor. A more complex way would be a to use buck/boost regulator between the panel and your charger. You might gain a slight advantage under low light conditions when the panel isn't putting out much but the overall efficiency could end up worse than the simpler shunt regulator. Under optimum conditions, I would expect it to take a full day for a 3 watt (peak) panel to charge just one of your 35 Wh batteries. Charging an intermediate device such as the Sherpa 50 through its built in charger and then using it to charge your battery through yet another charger would severely cut your overall efficiency. Depending on how long you'll be gone, it might be far more practical, reliable, and economical to just carry (or find a way to be resupplied with) a few additional fully charged 35 Wh batteries. Don

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