Factory wholesale price for Poly-crystalline Solar Panel 300W Factory from Uzbekistan
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Poly-crystalline Solar Panel 300W
Technical parameter
Maximum Power(W) 300W
Optimum Power Voltage(Vmp) 37.15V
Optimum Operating Current(Imp) 8.08A
Open Circuit Voltage(Voc) 45.30V
Short Circuit Current(Isc) 8.87A
Mechanical Characteristics
Cell Type Poly-crystalline 156x156mm (6 inch)
No of Cell 72 (6x12pcs)
Dimensions 1956x992x50mm
Weight 22.5Kg
Front Glass 3.2mm,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*156mm
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
Solar power is amazing. On average, every square meter of Earth’s surface receives 164 watts of solar energy (a figure we’ll explain in more detail in a moment). In other words, you could stand a really powerful (150 watt) table lamp on every square meter of Earth’s surface and light up the whole planet with the Sun’s energy! Or, to put it another way, if we covered just one percent of the Sahara desert with solar panels, we could generate enough electricity to power the whole world. That’s the good thing about solar power: there’s an awful lot of it—much more than we could ever use.
I liked these Greesonic panels so much that I wanted to make a quick video review.
I started with the first 100 watt panel a few months ago after getting tired of running an extension for my battery maintainer. Keeping Marine batteries on a maintainer/charger drastically increases their lifespan. For the record, 100 watts is more than enough for this by the way but I wanted to be able to power all my electronics while out at the sandbar or island without draining batteries. So here I am 3 panels later with a rock solid power setup.
Today was the first day I was able to test what they can do with everything left on. (VHF/GPS-FishFinder/Radio/Phone Charger/bait well pump) and the occasional wash down pump to clear the boat of sand. The batteries were un-touched and motor cranked right up after a long day at the island!
After a bit of research I can say I’m glad I found these. Much better quality than those PET panels that scratch easily. These are practically self cleaning. After some rain they good as new. They are so thin and flexible nobody notices they are up there too.
Highly recommend for you guys that like to run on batts for many hours and not have to constantly plug in chargers to maintain their life. Greesonic for the Win!
PS. They are on Amazon.
https://www.amazon.com/GreeSonic-Fiberglass-Photovoltaic-Corrosion-resistant-connectors/dp/B01ET1YBJG/ref=pd_sbs_86_4?_encoding=UTF8&pd_rd_i=B01ET1YBJG&pd_rd_r=8QD8JYT3SSW1595BWBET&pd_rd_w=ILuBh&pd_rd_wg=SungX&psc=1&refRID=8QD8JYT3SSW1595BWBET
