Northern Tool 270w Solar Module /Solar Energy/Good Quality
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 10 watt
- Supply Capability:
- 100000 watt/month
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Packaging & Delivery
Packaging Details: 25PCS/Pallet, carton box with wooden pallet or wooden box with pallet
Delivery Detail: 7-15 days according to the order quantity
Product Description
A Grade 250w high efficiency Poly PV Solar panels
Max Power Voltage Vmp(V) | 31.5 |
Max Power Current Lamp(A) | 7.94 |
Open Circuit Voltage Voc(V) | 37.5 |
Short Circuit Current Isc(A) | 8.72 |
Temperature Coefficients of Isc (%/℃) | 0.0825 |
Temperature Coefficients of Voc (%/℃) | -0.4049 |
Temperature Coefficients of Pmp (%/℃) | -0.4346 |
Max Power(w) | 250 |
We now provide
• Monocrystalline Solar Panel
• Polycrystalline Solar Panel( multicrystalline silicon Solar Panel)
Features of our products:
• High conversion efficiency mono/poly-crystalline amorphous silicon solar cells
• Modules incorporate high performance bypass diodes to minimize the power drop caused by shading
• High transmittance, low-iron tempered glass
• High performance EVA encapsulant to prevent destroying and water.
• AI frame: without screw, corner connection. 8 holes on the frame can be installed easily
• Good performance of preventing from atrocious weather such as wind and hails
Company Profile
China National Building Material (CNBM) Group Corporation
CNBM International Corporation is a professional solar panel manufacturer in China for CNBM brand . Silicon panel ( silicon module), as our main product, has high quality and good service. Our products are very popular in Europe, Australia, England, Middle East, Mexico, Argentina, Chili, Singapore and Africa.
Furthermore, our products have gained international authorized certificates like TUV, UL and CE.
China National Building Material (Group) Corporation (CNBM), established in 1984, is one of the largest State-owned group corporations of building & mechanical materials which specializes in the design, manufacturing and distribution of building materials in the world.
As the whole world turns “green”, CNBM enters into the Photovoltaic Industry in 2005.After 6 years' fast growth, now our annual capacity is 500MW solar panel and 500MW solar cell.
FAQ
We have organized several common questions for our clients，may help you sincerely：
1.what price for each watt?
it depends on the quantity, delivery date and payment terms,
2.what is your size for each module? can you tell me the parameter of your module?
we have different series of panels in different output, both c-si and a-si. please take the specification sheet for your reference.
3.Can you provide the peripheral products of the solar panels, such as the battery, controller, and inverter? If so, can you tell me how do they match each other?
Yes, we can, we have two companies for solar region, one is CNBM International, the other is CNBM engineering Co.
We can provide you not only the solar module but also Solar Cells, the off grid solar system, we can also provide you service with on grid plant.
4What is your warranty system?
Our product performance guarantees for 25 years
• 12 years guarantee for workmanship
• Timeliness of delivery
• Quality Products certified (TÜV, UL, CE, ISO)
5.How do you pack your products?
We have rich experience on how to pack the panels to make sure the safety on shipment when it arrives at the destination.
6. Can you do OEM for us?
Yes, we can.
7.How long can we receive the product after purchase?
In the purchase of product within three working days, We will arrange the factory delivery as soon as possible. The pecific time of receiving is related to the state and position of customers. Commonly 7 to 10 working days can be served.
- Q: I have a cabin that is way out in the middle of no where, it would cost 000's of dollars to get power to it. If I have a 8,000 BTU air conditioner that runs on 25 volts and 5 amps (or 875 watts)How many solar panels will I need to run this during the day, plus charge the batteries to run it all night? How many batteries would I need
- You would need 6 300 watt solar panels, US price around $300 per, And a minimum of 4 batteries. You are going to have major problems only having 5 hours of sun though.I am not sure you could get it to work with only that much sunlight. Along with an inverter and some other controller units. If you live in an area that has some wind, a wind generator would knock it down to where you would only need 2 solar panels and a small 500 watt wind generator. The problem you are going to have is trying to run it all the time. I had an AC that size in my camping van, it took about 20 minute to run two batteries down so low that the inverter started to sound the low battery alert. If I left it running it did ok, and I had an over-sized alternator for it. I had a 50 amp heavy truck alternator. A swamp cooler would be a lot less energy, you could easily recycle about 95% of the water. I know this is the 2st century and this may sound a little nuts, but with only 5 hours of daylight, if you have some trees you could use for burning you could build an outdoor steam engine cheaper and it would charge a lot more batteries in a lot less time. Plus you could run off the steam engines generator for as long as you had a fire day or night. Even a small 55 gallon water tank would give you plenty of head for the steam. You could easily run a 6000 watt generator off of it and have plenty of electricity while it was running. Just a thought, I had to resort to some extreme measures when I bought some Montana land in 2000, it was 6 miles to the nearest utility pole.
- Q: I have a solar energy panel that works in every room except mine. I have those severely bright, energy efficient bulbs and it doesn't work at all.What do I do? Is the bulbs really causing this? Why?
- get a voltage tester and test the output from the panel if it is a 24 volt output which is then inverted the reading should be that of the inverter. however if you solar panel installer installed an LCD panel that controls the electricity you can monitor any faults from the panel. Make sure that the panel you feel is not working is producing the same amount of electricity as the others. As for the bulb buy a new one from a different make and see what happens but by testing the output voltage and power you are bound to find the fault.. I have just thought of this the panels supply electricity to big batteries that then distributes power to all the house perhaps the battery supplying power to your room is faulty or the connections to the inverter might be faulty. BEST option if you can afford it because it will be expensive is to buy a solar monitoring system that control the panel and batteries you can even connect it to your laptop and control all the power.
- Q: Are there any limitations to the lifespan of solar panels?
- Yes, there are limitations to the lifespan of solar panels. Over time, solar panels experience a gradual decrease in efficiency due to factors like exposure to environmental elements, wear and tear, and potential manufacturing defects. Additionally, the materials used in solar panels may degrade over time, which can affect their performance and overall lifespan. However, with proper maintenance and regular inspections, solar panels can typically last for 25 to 30 years or even longer.
- Q: will at least consider them for their home electricity? I've seen several articles that new technologies are now being used, but it doesn't seem to be promoted to residential apps. I've even seen that the solar technology will be used in paints in the near future.
- There are lot of cheap solar panels today, Its all in the internet and most of them are made in China. Expand your knowledge and learn from a renowned solar company about the Cheap Solar Panels. Visit our site and contact us today!
- Q: Any opinion on harbor freight solar panels ?
- Actually, if you are looking to start slow and inexpensive, they are an economical way to get your feet wet, so to speak. I also tried the make them yourself kits, where you get a stack of cells, a frame and solder and you have to get the glass and assemble it yourself. I combined the Harbor Freight kit with one of those panels. Problems you will run into start with the kit having no inverter and not much information on any kind of power storage, you get to work that out for yourself. I initially wired them to provide all the power for the ceiling mounted lights in a small house, on a totally independent circuit, using 3 car batteries for storage. It worked perfectly, however the code inspector I got from the City could NOT fathom that my system had no connection whatsoever to his grid and would not pass it, even though I showed him the separate breaker box that was not supplied by the line coming into the house for the rest of the power. I finally gave up on him and put the lights back into the main system and use the solar setup to charge cell phones and occasionally power a lamp, as the inverter has plugs right on it. It keeps those car batteries fully charged going on 4 years now, with no issues detected at all.
- Q: I mean when light hits the solar panel where does the energy go and what does it become? Be specific.
- I think you got half the answer, but basically like everyone else said, the light hits the electrons and create energy now that energy, since it is now an electrical energy is then saved within batteries connected to the solar panel and that provides the power itself, so as long as there is sun, the batteries will charge up, once the sun goes away, the batteries slowly deplete, but once the sun hits, more energy. =)
- Q: I want to build a standalone wifi repeater -- powered by the sun. The problem is how much solar power and how big of a battery?net draw 4.5v @ 0.66A with loadnet draw 4.5v @ 0.60A no loadI'm assuming the best choice would be a 6v battery with a a couple diodes in series to induce ~.5v drop. Then, I need something to charge it -- I found 2v 6w solar chargers in the automotive section of Sears and 6v 2w solar chargers in the marine section of Dick's Sporting Goods.How many solar panels and what capacity batteries should I use? Is this the best method or should I use a voltage regulator and go with 2v batteries?I need this to be as cheap and simple as possible...
- You won't get very far with THAT lash-up. First of all.. WHY would you want to use diodes to drop the voltage.. they DRAW CURRENT and that is something you don't have to spare. That draw of (660 ma) comes out to just under 3 watts. You DO KNOW that you can get that 4.5 Volts by driving a NAIL into the THIRD CELL in a 6 Volt wet cell battery... right? and for what you are doing, you have more current available with a 6 volt battery than a 2 volt battery. Anyway, you could use two 6 Volt batteries and tap them at the 4.5 volt point then tie them in parallel, but you could still use the 6 volt solar panel to charge them. Trying to use an inverter is just an exercise in futility.. With TWO of the LARGEST DEEP CYCLE BATTERIES you can buy at AutoZone running in Parallel and being charged by solar panels.. if you hook a 75 watt inverter to them, they will go flat in about 4 hours of use during the night. This is not rocket science. Back when cars were changing over from 6 volts to 2 volts, I powered up more than one 6 volt car radio off a 2 volt battery... when you grow up as poor as I did.. you get inventive. I later used the same trick on the 24 volt electrical systems the Jeeps were using, to power up clandestine repeaters in places where no repeaters should have been. About 25 years ago I was living in the Denver area and built up a 0 watt 2 meter repeater on a split channel and took it up to Mt. Evans during the summer and hid it in a pile of rocks. I used tone control, so we were the only ones using it and, as I said, It was a split channel.. so it wasn't on a regular repeater channel. That thing was still running when I moved from the Denver area about 3 years later and for all I know, It's still up there on Mt. Evans (find the Brittlecone Pines and look towards that small peak about a mile to the west)
- Q: Harbor Freight sells a 75 watt solar panel, a surge power inverter, and deep charge batteries. But no one there can tell me how to put it all together. I want the end output to be a simple power bar that I can plug my devices into. I live in an apartment so I can not wire it directly into the grid. Please only serious responses. Don't waste your time and mine.
- i wouldn't. - harbor freight isn't known for the best quality stuff. - 75 watts assumes roof mounting, at 90 degrees to the sun, on a bright day. you're going to get considerably less. and only when the sun is highest in the sky. maybe you should look at, your computer, for example. if you're using it for 4 hours, and it has a 500 watt power supply, and you add 200-500 watts for the monitor, and some for the printer, modem, etc, you'd use 5kw that day. your 75 watt panel, generating maybe 50 watts at most, for maybe 4 hours when the sun was highest, and shining directly on the panel, would generate 200 watt hours. it would take 25 days to generate the electricity you'd use in single day. in the winter, you'd be pretty much out of luck. there just isn't enough bright sun. clearly, it's up to you, but there's a harbor freight near me, and i'll not be rushing out to get such a system. further, most appliances are quite voltage sensitive. you really do need to have the voltage in the 0-20 range. too much out, either higher or lower, will shorten the life of appliances at best.
- Q: Why is it nessicary, with today's economy in the postion it's currently in, to use renewable energy sources; like solar panels?
- If you're asking from an individual standpoint, I'd say it's an individual decision, and no, it's not necessary, any more than it's necessary to buy milk at Costco instead of 7-. If an individual is facing the tradeoff of paying rent or eating, solar panels won't even make the list. On the other hand, if one has money, the best time to buy just about anything is when the economy is bad, because then prices are low, competition is fierce, and installers are hungry for work. If your question is more, why should we as a society use solar panels, that's forward looking. Why didn't GM design and agressively market a Prius-like hybrid 0 years ago? Looking back, they should have.
- Q: My plans are building several solar panels and have a battery bank. I want to be able to power the refriderator and freezer and occationaly an electric grill. How would This work exactly and what would the best way to hook this up to make it work? I want to be able to convert DC to AC. How many batterys would I need to make this work. I know when Civil unrest happens I want to be prepared. How would Wind Power work If I can get the equipment I need?
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Northern Tool 270w Solar Module /Solar Energy/Good Quality
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 10 watt
- Supply Capability:
- 100000 watt/month
OKorder Service Pledge
OKorder Financial Service
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