250W Polycrystalline Solar Panel Made in China

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Shanghai
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TT OR LC
Min Order Qty:
100 watt
Supply Capability:
10000 watt/month

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Item specifice:

Material: Polycrystalline Silicon Max. Power(W): 250 Number of Cells(pieces): 60

Product Description:

Product Description

Produt name: 250W Poly Crystalline Solar Panel


Product Highlights:
  1. Guarantee positive power tolerance (0~+3%)
  2. Module can bear snow loads up to 5400Pa and wind loads up to 2400pa
  3. High performance under low light conditions (cloudy days, mornings and evenings)
  4. Certified by Europe standards of TUV, IEC, CE and British MCS and AUS CEC
  5. OEM/ODM available
 
Specification:

Electrical Characteristics
Maximum Power [Pmax]250W
Power Tolerance+/-3%
Maximum Power Voltage [Vmp]30.1V
Maximum Power Current [Imp]8.31A
Short-Circuit Current [Isc]8.73A
Open-Circuit Voltage [Voc]37.3V
Module Efficiency15.37%
Max. System Voltage1000VDC
Cell Size and SeriesPoly 156*156  60pcs (6*10)
Temperature Coefficient of Pmax- 0.47% / º C
Temperature Coefficient of Voc- 0.35% / º C
Temperature Coefficient of Isc0.05% / º C
Mechanical Characteristics
Dimension (mm)1640*992*40
FrameAnodized Aluminium Alloy
Glass3.2mm,High Transmission,Tempered Glass
Junction box & CableIP65 Rated weatherproof connectors
Cable: TUV 1x4.0mm2 / UL12AWG,Length:900mm
Weight19.0Kgs


Industry-leading Warranty:
Warranty on material and workmanship: 10 years
Guaranteed output of 90% after 12 years and 80% after 25 years.

250W Polycrystalline Solar Panel
Application:
Poly 250W Panels in 1MW CGC PV Demonstration Project
250W Polycrystalline Solar Panel

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Q:how to charge phone with solar panel?
see u have to make ur own ckt for this ur solar panel generate DC if u want to charge ur phine then its convenient way to harge with ur charger for this do this search for net to convert DC-AC convertor since ur charger work on AC so when ur solar panel generate DC it convert into AC that will charge ur phone in ckt u need this thing filter and amp ie the DC voltage come from solar panel 2 DC to AC convertor 3 AMP for AC 4 filter for AC and u are done....... fine ckt from google.....
Q:How are these flexible solar panels?
Guide okorder.com/
Q:What is the best solar panel?
You have to decide which is more important to you, cost or efficiency. The most efficient solar panels that are commercially available cost more than twice as much per square foot than the cheapest ones. Ultimately, I believe that the cost per watt was actually better on the cheaper, least efficient panels, but then you need a lot of square footage in order to generate any substantial power. So it comes down to what you have more of, space or money. The new panels that collect a wider range of light are not currently available commercially, and when they are I am sure that they will be expensive. I have read the research but have not heard of anyone mass producing them yet.
Q:Do homemade solar panels really work?
The technology of the solar panels is way beyond any DIY project. You can buy pre-assembled panels and install them, but you also need the devices to make the DC they generate into the AC your home needs. Also you will need the batteries for the nights and the times when the sun does not shine. Solar/ photo voltaic generation does work but is not a cost effective way to reduce your reliance on the electrical grid as of this time. They cost 2 arms and a leg, and take many years to come close to break even on the electrical savings. Do a search on the amount of power each panel will generate and then compute how much power you need and what the costs are. I believe in solar power, but not for an individual residence is it practical. Good luck.
Q:Any companies that have solar panels?
Not sure what application you need the panels for, but here is a website that retails a number of Solar products (as well as some other good alternative energy devices). Good luck!
Q:SOLAR PANELS (sun enerjy)?
30 years ago when the Hippies shut down our clean Nuclear plants They promised a clean miracle. No such thing! I'm sad to say at best Solar will only provide a fraction of our energy needs. (I guess if one abuses enough drugs they'll think up anything?) I am an apprentice for a Electric foreman; we calculate $50,000.00 in panels will meet the needs of a k foot house. So you would need a hundred grand. You'd save 00 dollers a month in electricity, but you'd be paying ,000 a month to pay off your loan of 00,000.00 in panels. God Bless You indeed a nice thought if it was practical.
Q:Photodiode vs solar panels?
Yes, so are camera sensors. Except in cameras they're specially desgined to reduce noise.
Q:Do solar panels generate power when it's cloudy?
Yes. If there is any light, even on a cloudy day, a solar panel can generate power. But the amount of power generated is much less when the solar panel is not in direct sunlight (about 90% less). On a cloudy day, typical solar panels can produce 0-25% of their rated capacity. The exact amount will vary depending on the density of the clouds, and may also vary by the type of solar panel; some kinds of panels are better at receiving diffuse light. SunPower solar cells, for example, have been designed to capture a broader range of the solar spectrum. By capturing more red and blue wavelengths, their solar panels can generate more electricity even when it’s overcast. Ultraviolet light also reaches the earth’s surface in abundance during cloudy days (if you’ve ever been at the beach when it’s cloudy and gotten a sunburn, you’ve experienced this firsthand). Some solar cells are in development that can capture UV rays, although these are not out on the market yet. Even with a standard solar panel on a cloudy day, though, you will be able to generate some power when it’s daylight. The same thing is true in foggy weather. If you live in a city with frequent fog, like San Francisco, you’ll still be able to generate electricity when the fog rolls in. :)
Q:How can I regulate current from a solar panel?
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 effective & efficient are home made solar panels?
I had a system installed recently, so I would suggest starting by getting a quote from a licensed contractor. Even if you are planning on doing the installation yourself, a contractor will have a lot of useful info. I got 3 quotes and they were all about the same cost. I was able to get a 2 year usage history from our utility so the contractors were able to suggest a system based on that. They were able to tell me about rebates and tax credits, were the best location would be and the estimated amount of production. They have a nifty gadget that can tell if there will be any shade cast on the roof at any time during the year. I decided to maximize my rebates and got a system that reduced my utility bill by about 50%, although my production has cut it much more than that, my highest electric bill was $35, and that was in Dec. with cloudy short days. I got a $0K rebate and a $2K tax credit. This year the fed. tax credit is 30% of the total installed price. My system cost $26K, I paid $6K out of pocket and I'm saving about $2K per year.

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