20W Small off Grid Solar Power System with low price

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Loading Port:
Tianjin
Payment Terms:
TT OR LC
Min Order Qty:
1000 watt
Supply Capability:
10000000 watt/month

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Item specifice:

Material: Polycrystalline Silicon Max. Power(W): 20 Number of Cells(pieces): 36

Product Description:

Product Description

Key Specifications/Special Features

  • Maximum power: 20Wp

  • Maximum power voltage (V): 18.00

  • Maximum power current (A): 3.89

  • Open circuit voltage (V): 21.60

  • Short circuit current (A): 4.14

  • Number of cells: 36

  • Size of module (mm): 62.5 x 62.5mm

  • Temperature coefficients of Isc (%): 1,000V

  • Temperature coefficients of Voc (%): + 0.1/°C

  • Temperature coefficients of Pm (%): -0.38/°C

  • Temperature coefficients of Im (%): -0.47/°C

  • Temperature coefficients of Vm (%): +0.1/°C

  • Temperature range: -0.38/°C

  • Surface maximum load capacity: -40C to +85C

  • Allowable hail load: 60m/s(200kg/sq.m)

  • Connectors and cables type: PV-0502( TUV )

  • Warranty: 10 years product warranty

  • Quantity of one 20ft container: e70%

  • Quantity of one 40ft HQ container: 5,000pcs

  • Quantity of one 40ft HQ container: 10,000pcs


20W Small off Grid Solar Power System

Product Details

Electrical DataModule SizeWeightNumber of cells series
Nominal PowerMax-PowerMax-PowerOpen-CircuitShort-Circuit
VoltageCurrentVoltageCurrent
PmaxVMPPIMPPVOCISC
WVAVAmmKgpc
1017.20.5821.61.31340*254*171.236
2017.21.1621.61.93340*460*251.836
3017.21.7421.62.57350*670*30336
4017.22.3221.63.23450*670*303.536
5017.22.9121.63.86550*670*304.536
6017.23.4921.63.86603*670*305.336
7017.24.0721.64.51758*670*30636
8017.24.6521.65.17758*670*306.536
9017.25.2321.65.81935*670*306.736
10017.25.821.66.46935*670*306.736
11017.26.421.67.081061*670*35836
12017.26.9821.67.721161*670*358.636
13017.27.5621.68.41277*670*359.836
14017.2421.64.41480*670*3510.936
15017.24.1721.64.581480*670*3510.936
16034.44.6543.25.171480*670*3510.972
17034.44.9443.25.491172*983*3511.772
18034.45.2343.25.811172*983*3511.772
19034.45.5243.26.141260*983*3514.672
20034.45.8143.26.51260*983*3514.672
21034.46.143.26.851488*983*3514.672
22034.46.443.27.081488*983*3515.272


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Q:Solar panels single crystal and double crystal in the rain which is easy to use
At present, monocrystalline silicon solar cell photoelectric conversion efficiency of about 15%, the highest reached 24%, which is all types of solar cells in the photoelectric conversion efficiency of the highest, but the production cost is so large that it can not be a large number of extensive And commonly used. Since monocrystalline silicon is typically coated with tempered glass and waterproof resin, it is rugged and durable for up to 15 years and up to 25 years.
Q:What is the working principle of solar panels?
the material is easy to industrial production and material performance and stability.
Q:What is the main material for making solar panels?
If you make your own, in addition to buying silicon also need to buy for the packaging of silicon photovoltaic glass and EVA film.
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:Can solar panels be connected directly to motor?
Power supply must be a number of individual battery strings, connected in parallel and tightly packaged into components.
Q:Composition and function of solar panels
Used to bond fixed tempered glass and power generation (battery), transparent EVA material directly affect the quality of the component life, exposure to the air in the EVA easily aging yellow, thus affecting the component's light transmittance, thus affecting the components
Q:Polycrystalline solar panels are good or single crystal solar energy is good
Polycrystalline silicon solar cell production process and monocrystalline silicon solar cell almost, but the polysilicon solar cell photoelectric conversion efficiency will have to reduce a lot of its photoelectric conversion efficiency of about 12% (
Q:The voltage and power problems of solar panels
Because the MPPT controller has a wider input voltage range, it can also convert multiple voltages into current charge and better protect the battery.
Q:What is the principle and structure of solar panels?
solar panels: solar panels is the core of solar power generation system, solar power system is the highest value of the part. Its role is to convert the sun's radiation capacity into electricity, or sent to the battery to store, or to promote the load work.
Q:What is the principle of solar panels work?
The sun is irradiated on the semiconductor p-n junction to form a new hole-electron pair. Under the action of the p-n junction electric field, the holes flow from the n region to the p region. The electrons flow from the p region to the n region, and the current is formed after the circuit is turned on. This is the photoelectric effect of the working principle of solar cells.

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