Portland Solar Panels - Factory Direct Sale:A-Grade High Efficiency 250W Poly Solar Panels

Portland Solar Panels - Factory Direct Sale:A-Grade High Efficiency 250W Poly Solar Panels System 1

Portland Solar Panels - Factory Direct Sale:A-Grade High Efficiency 250W Poly Solar Panels

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Loading Port:: Shanghai

Payment Terms:: TT OR LC

Min Order Qty:: 5000 watt

Supply Capability:: 40000000 watt/month

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Our solar cells are widely used in solar pump, solar lighting, lamps, household electricity, traffic, communication, meteorological, building and photovoltaic power plants and so on.

Characteristics

Max Power Voltage Vmp(V): 30.4

Max Power Current Imp(A): 8.26

Open Circuit Voltage(V) : 37.5

Voc(V)Short Circuit (A): 8.88

Current Isc(A)Max Power Pm(W): 250

Temperature Coefficient of Cells

NOCT	45
Temperature Coefficients of Isc(%/℃）	0.04
Temperature Coefficients of Voc(%/℃)	-0.34
Temperature Coefficients of Pmp(%/C)	-0.42

Mechanical Data

Dimension	1638x982x35
Weight	18kg
No. of Cells and Connections	60(6x10)
Tolerance	0~+5W
Cell	Polycrystalline Cell
Packing	812 Pcs/40ft(H) Container

Limits

Opening Temperature	-40℃ to +85℃
Storage Temperature	-40℃ to +85℃
Max System Voltage	1000VDC(IEC)/ 600VDC(UL)

Guarantees

Products Guarantee	12yrs free from defects in materials and workmanship
Performance Guarantee	No less than 90% within 10yrs and no less than 80% within 25yrs
Certificates	TUV(IEC61215&IEC61730), CE

IV Curve

Factory Direct Sale: A-Grade High Efficiency 250W Poly Solar Panels

Q: What Are Solar Panels Made Of?: Silicon. They have to compete with computer chip makers for the same supply of silicon. As solar panels are becoming more common, the price of computer chips is going up.

Q: Can solar panels be used in areas with high levels of humidity?: Yes, solar panels can still be used in areas with high levels of humidity. While humidity can potentially impact the performance of solar panels, they are designed to withstand various environmental conditions. Modern solar panels are built with protective layers and are tested to ensure durability and efficiency in different climates, including high humidity areas. Additionally, regular maintenance and cleaning can help mitigate any potential effects of humidity on solar panel performance.

Q: Can solar panels be used in areas with frequent power outages?: Yes, solar panels can be used in areas with frequent power outages. Solar panels generate electricity from sunlight, which means they can continue to produce power even when the main grid is down. However, for uninterrupted power supply during outages, it is important to have an energy storage system, such as batteries, to store excess energy generated during the day for use at night or during power outages.

Q: Are there any government incentives or rebates for installing solar panels?: Yes, there are various government incentives and rebates available for installing solar panels. These incentives can include federal tax credits, state and local rebates, grants, and loan programs. These incentives aim to promote renewable energy adoption, reduce carbon emissions, and make solar panel installations more affordable for homeowners and businesses. It is advisable to research and consult with local authorities or solar energy providers to determine the specific incentives available in your area.

Q: How do solar panels affect the insurance premiums of a home?: Solar panels can potentially affect the insurance premiums of a home in a positive way. While the upfront cost of installing solar panels may increase the overall value of the property, insurance companies often view solar panels as a risk-reducing feature. This is because they can decrease the home's reliance on traditional energy sources and potentially lower the risk of fire or electrical damage. As a result, homeowners may be eligible for certain insurance discounts or reduced premiums, depending on the insurance provider and policy.

Q: how big of an solar panel do i need to power/charge my laptop?would one from canadian tire sell the right one?: Most decent laptops can use 50W of power or more....so you'd actually need a large solar panel with good sunlight. I just looked up how big a 50W solar panel is....it's about 64x64 centimeters...which is very big and expensive! So, solar power may not be the best solution to power, or charge a laptop battery. Maybe there are some solar powered chargers that charge the battery very slowly, but probably not.

Q: I am thinking of buying a 3w solar panel called the nomad 3 from goal zero. I want to charge 35Wh lithum batteries. I have heard that lithium batteries are temperatmental and without a regulated current things could get ugly.I have a couple of chargers that came with the batteries. One is a 2v car charger and another is 0-240v wall charger.Goal zero sell something called a sherpa 50, which contains rechargeable batteries and an inverster and I think they suggest that I charge my batteries indirectly through the Sherpa 50, however, the sherpa 50 is expensive at $200, and seems to have a small capacity, in addition to being extra weight that i don`t want to carry.Electronics geniuses, you are my only hope.: Lithium batteries do have special charging requirements. I would recommend that you use the 2 volt charger that came with them to keep them happy. Automotive power systems can have voltages as high as 4.5 volts when the engine is running so there's no need to limit the output of the panel to anything less than that. Check with the charger manufacturer to see what it will withstand. Some will work with systems up to 24 volts nominal (up to 29 volts actual) found in larger commercial vehicles such as trucks and busses. If your charger will work with both 2 and 24 volt systems you might not need anything extra to use the unregulated output of the panel. Otherwise I'd recommend a shunt regulator to clamp the output of the panel to no more than 4.5 volts. That way it would dissipate (waste) very little of the panel's power, and even that would only be during those rare times when the panel is producing maximum output. Such a device could be as simple as a high power zener diode, a low power zener coupled with a power transistor, or a precision shunt regulator such as a TL43 coupled with a power transistor. A more complex way would be a to use buck/boost regulator between the panel and your charger. You might gain a slight advantage under low light conditions when the panel isn't putting out much but the overall efficiency could end up worse than the simpler shunt regulator. Under optimum conditions, I would expect it to take a full day for a 3 watt (peak) panel to charge just one of your 35 Wh batteries. Charging an intermediate device such as the Sherpa 50 through its built in charger and then using it to charge your battery through yet another charger would severely cut your overall efficiency. Depending on how long you'll be gone, it might be far more practical, reliable, and economical to just carry (or find a way to be resupplied with) a few additional fully charged 35 Wh batteries. Don

Q: How do solar panels perform in areas with high pollution levels?: Solar panels can still perform well in areas with high pollution levels, but their efficiency may be slightly reduced. Air pollution can cause a build-up of dirt, dust, and particulate matter on the surface of the solar panels, which can decrease their ability to capture sunlight. Regular cleaning and maintenance can help mitigate this impact and ensure optimal performance. Additionally, advancements in solar panel technology, such as anti-reflective coatings and self-cleaning mechanisms, are being developed to address the specific challenges posed by pollution.

Q: Still researching for a car that fully uses solar power energy, suggestions would be nice to.: Not okorder /

Q: Can solar panels be installed on a carport or parking lot?: Yes, solar panels can be installed on a carport or parking lot. In fact, carport solar installations are becoming increasingly popular as they serve a dual purpose of providing shade for vehicles while also generating clean and renewable energy. Similarly, solar panels can be mounted on parking lot structures, maximizing the use of available space and contributing to reduced dependence on fossil fuels.

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