Cheap Solar Cell Panel Small Solar Panel

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Loading Port:
China main port
Payment Terms:
TT or LC
Min Order Qty:
50000 pc
Supply Capability:
15000 pc/month

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Product Description:

 

 

Specifications

1. monocrystalline silicon solar panel

2. high efficiency

3. 25 year module output warranty

Warranty:

1) 5 years for material & workmanship;

2) 12 years for 90% power output;

3) 25 years for 80% power output.

 

Packaging & Delivery

MOQ: 50pcs

Delivery Time: 10-20 days after order confirmation

Package: Wooden carton or pallet packing

ModelNBJ-025M
Max Power (W)25w
Optimum Power Voltage18.40V
Optimum Operating Current1.36A
Open Circuit Voltage22.53V
Short Circuit Current1.45A
Size645*290*25mm
Weight3.0KG
Cell quantity36 pcs

 

 

Solar cells and their teachnoleadges

The history of solar cell development is briefly outlined, and the properties of the sun and solar radiation are reviewed. Properties of semiconductor materials that are important in the design and operation of solar cells are reviewed. The physical mechanisms involved in the generation and recombination of excess carriers are discussed and the basic equations of device physics are given. Both the dark and illuminated properties of p-n junctions are analyzed. Energy conversion efficiency limits are discussed for the photovoltaic process as well as the effects of various nonidealities on efficiency. Techniques for measuring the efficiency of photovoltaic devices are also described. The standard technology for making silicon solar cells is reviewed, and improved silicon cell technology is discussed. Considerations relevant to the detailed design of silicon cells are discussed. Several alternative device concepts are outlined and the structure and properties of solar cells made on some of the more developed alternatives to single-crystal silicon are discussed. Concentrating systems and photovoltaic systems components and applications are described. The design of stand-alone, residential, and centralized photovoltaic power systems are discussed. 

Solar cells and their applications

Multiple solar cells in an integrated group, all oriented in one plane, constitute a solar photovoltaic panel or solar photovoltaic module. Photovoltaic modules often have a sheet of glass on the sun-facing side, allowing light to pass while protecting the semiconductor wafers. Solar cells are usually connected in series and parallel circuits or series in modules, creating an additive voltage. Connecting cells in parallel yields a higher current; however, problems such as shadow effects can shut down the weaker (less illuminated) parallel string (a number of series connected cells) causing substantial power loss and possible damage because of the reverse bias applied to the shadowed cells by their illuminated partners. Strings of series cells are usually handled independently and not connected in parallel, though as of 2014)individual power boxes are often supplied for each module, and are connected in parallel. Although modules can be interconnected to create an array with the desired peak DC voltage and loading current capacity, using independent MPPTs (maximum power point trackers) is preferable. Otherwise, shunt diodes can reduce shadowing power loss in arrays with series/parallel connected cells.

 

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Q:What is a High-efficiency electric solar cell panel?
We should first check if the power output performance are stable, if not, no matter how high the power supply would be, it is not efficient but just unsafe.
Q:How does the solar cell work properly?
The most important step is the photons in sunlight hit the solar panel and can be absorbed by semiconducting materials.
Q:PV: the battery to the battery charge problem
Battery affected. Then according to the volt-ampere characteristics of solar energy, we can know that the actual output power of the solar panel is less than its nominal power.
Q:Solar panel resistance is changed with what
the lower the ambient temperature, the smaller the internal resistance of the battery, power generation The higher the effect; the other hand, the higher the temperature, the greater the internal resistance, the lower the efficiency.
Q:How is the solar cells factories working in China? Do they follow certain quality standards?
Of course, the follow the quality assurance standard, and in fact, they are as good as the solar cell factories in US.
Q:How many years should I spend in the solar cell industry to be a good solar cells sales person?
I worked as the solar cell sales for a foreign company for 3 years, and I am already the best sales in my company.
Q:What's the relationship between solar energy materials and solar cells?
The solar cells can be divided into different categories based on the different kinds of solar materials which are used to produce the solar cells.
Q:Which one is better on the solar cells panel? The Monocrystal Solar Energy Cell or photovoltaic cell?
It depends on where you put the solar cells, and what will you use them for. But I do think photovoltaic cell is better.
Q:What is Solar Cell Technology?
it is the technology focused in utilzing solar cells.
Q:Is the Photovoltaic Cells cheap to buy?
If you are determined to get the solar cells to generate the power for you, Photovoltaic Cells are one of the cheapest things you can get.
Our company is a High-tech enterprise, who is professional on manufacturing on solar photovoltaic products. We mainly produce the solar module and system. Our annual production capacity of solar module is 50MW.Meanwhile,we also undertake the design, installation and serviceonbothon-grid & off-grid system for home and power plant.

1. Manufacturer Overview

Location Zhejiang,China (Mainland)
Year Established 2006
Annual Output Value Above US$100 Million
Main Markets North America 2.90%
South America 25.60%
Eastern Europe 4.83%
Southeast Asia 9.18%
Africa 1.16%
Mid East 2.90%
Western Europe 19.81%
Central America 2.41%
Northern Europe 9.95%
Southern Europe 8.21%
South Asia 0.97%
Domestic Market 12.08%
Company Certifications ISO 9001:2008

2. Manufacturer Certificates

a) Certification Name  
Range  
Reference  
Validity Period  

3. Manufacturer Capability

a)Trade Capacity  
Nearest Port Rotterdam,Hamburg
Export Percentage 81% - 90%
No.of Employees in Trade Department 6-10 People
Language Spoken: English, Chinese, Japanese, German, French
b)Factory Information  
Factory Size: 3,000-5,000 square meters
No. of Production Lines 5
Contract Manufacturing OEM Service Offered Design Service Offered Buyer Label Offered
Product Price Range Low and/or Average