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Polycrystalline Solar Panel

70W Polycrystalline Solar Panel

70W Polycrystalline Solar Panel

Product: 70W Polycrystalline Solar Panel

Panel Cell: Polycrystalline Silicon

Rated Power Output: 70W

Voltage: 17.5

Current: 4A

Certificate: CE, RoHS, ISO

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Product Details

Polycrystalline solar panels are made up of multiple crystals. Instead of going through the slow and very expensive process of creating a single crystal, manufacturers simply put a crystal seed in a cast of molten silicon and allow it to cool. Due to this casting method, the crystal surrounding the seed isn’t uniform and grows into multiple small crystals.

 

Package Of 70W Polycrystalline Solar Panel

Carton Package and Wooden Package

Size: 775*670*35mm

 


Polycrystalline is also about 20% cheaper to produce and creates less waste silicon in the process. If you’re looking for the lowest price, polycrystalline panels are probably your best bet. However, polycrystalline experiences internal efficiency losses due to the structural inconsistency at the seams where two different crystals meet; due to the lower purity of the silicon. 


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