Best-Selling Poly-crystalline Solar Panel 50W Wholesale to Munich

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Persisting in "High quality, Prompt Delivery, Competitive Price", we have established long-term cooperation with clients from both overseas and domestically and get new and old clients' high comments for Best-Selling Poly-crystalline Solar Panel 50W Wholesale to Munich, We have confident that we can provide the high quality products at resonable price, good after-sales service to the customers. And we will create a bright future.


Poly-crystalline Solar Panel 50W

Technical parameter

Maximum Power(W)                         50W

Optimum Power Voltage(Vmp)        18.43V

Optimum Operating Current(Imp)    2.71A

Open Circuit Voltage(Voc)               22.48V

Short Circuit Current(Isc)                 2.98A

Mechanical Characteristics

Cell Type Poly-crystalline                  156 x 52mm

No of Cell                             36 (4x9pcs)

Dimensions                          678x542x25mm

Weight                                 4.2Kg

Front Glass                          3.5mm,High Transmission, Low Iron,Tempered Glass

Junction box                                       IP65 Rated

Output Cable                                     TUV 1×4.0mm2/UL12AWG,Length:900mm

Temperature and Coefficients

Operating Temperature(°C):                -40°C ~ + 85°C

Maximum System Voltage:                  600V(UL)/1000V(IEC) DC

Maximum Rated Current Series:         15A

Temperature Coefficients of Pmax:     -0.47%

Temperature Coefficients of Voc:        -0.389%

Temperature Coefficients of Isc:           0.057%

Nominal Operationg Cell Temperature (NOCT): 47+/-2°C

 Materials of solar panel

1).Solar Cell——Poly-crystalline solar cell 156*52mm

2).Front Glass——-3.2mm, high transmission, low iron, tempered glass

3).EVA——-excellent anti-aging EVA

4).TPT——-TPT hot seal made of flame resistance

5).Frame——anodized aluminum profile

6).Junction Box——-IP65 rated, high quality, with diode protection

Superiority: high quality anodized aluminum frame, high efficiency long life, easy installation, strong wind resistance, strong hail resistance.

Features

1. High cell efficiency with quality silicon materials for long term output stability

2. Strictly quality control ensure the stability and reliability, totally 23 QC procedures

3. High transmittance low iron tempered glass with enhanced stiffness and impact resistance

4. Both Poly-crystalline and Mono-crystalline

5. Excellent performance in harsh weather

6. Outstanding electrical performance under high temperature and low irradiance 

Quality assurance testing

Thermal cycling test

Thermal shock test

Thermal/Freezing and high humidity cycling test

Electrical isolation test 

Hail impact test

Mechanical, wind and twist loading test

Salt mist test

Light and water-exposure test

Moist carbon dioxide/sulphur dioxide

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  • I am having a hard time getting my head around using 18650′s for a 12v application! If I put 3 cells in series at most I will get 12.6V and least 9V If I use every last mah in the pack! Now most of my gadgets refuse to work below 11V

    So my problem is do I use 18650′s in a 3 cell pack and enlarge the pack in size and weight to achieve a larger capacity! Or do I compile a 4 cell pack with a higher voltage of 16.8v and utilize a god buck converter to bring the higher voltage down to a usable level and accept a loss of power in the stepping down process as heat?



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