Solar Cells A Grade and B Grade 3BB and 4BB with High Efficiency 19.1%

Solar Cells A Grade and B Grade 3BB and 4BB with High Efficiency 19.1%

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Loading Port:: Shanghai

Payment Terms:: TT OR LC

Min Order Qty:: 10000 watt

Supply Capability:: 100000000 watt/month

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Item specifice

Material:

Polycrystalline Silicon

Max. Power(W):

Number of Cells(pieces):

Size:

156*156

1.Product Description:

Specifications of Poly Solar Cells

Dimension	156mm X 156 mm ±0.5mm
Wafer Thickness	200um ±30um
Front(-)	Four 1.1mm wide bus bars(silver) with distance 39mm, Acid texturized surface with blue silicon nitride AR coating.
Back(+)	2.4mm wide silver/aluminum soldering pads, aluminum back surface field.

Temperature Coefficient of Poly Cells

Voc.Temp .coef.%/K	-0.351%/K
Isc.Temp .coef.%/K	+0.035%/K
Pm.Temp. coef.%/K	-0.47%/K

Electrical Characteristic of Poly Cells

Efficiency code		1720	1740	1760	1780	1820	1840
Efficiency (min)	(%)	17.2	17.4	17.6	17.8	18.2	18.4
Pmax	(W)	4.186	4.234	4.283	4.332	4.429	4.478
Voc	(V)	0.631	0.632	0.634	0.636	0.640	0.642
Isc	(A)	8.446	8.485	8.523	8.573	8.660	8.700
Vmp	(V)	0.525	0.527	0.529	0.531	0.535	0.537
Imp	(A)	7.973	8.035	8.097	8.160	8.280	8.340

2.Advantages of Poly Solar Cells

1). Tire-1 Solar Cells’ Manufacturer Quality Guarantee. With a complete and sophisticated quality government system, our Quality Management have arrived world’s leading place. Customer can receive Tire-1 Cells Maker’s Quality Standard Products.

2). Trusted Warranty. We can supply trusted after-sales service to our customer. If our cells are found not in conformity to the specification of manufacturer, or should the inspected quantity found in shortage, or should the packing found damaged, the buyer has the right to claim to the seller. The claim, if any, should be presented to seller within 30 days after cargo's arrival date to the port, together with related inspection report and photos issued and provided by a reputable independent surveyor such as SGS.

3). World’s Leading Manufacturer Equipment. We imported the newest and leading production equipment from abroad. Advanced equipment can guarantee the stable quality of cells. Auto production line can also save labor cost which will further cut our production cost.

4). Bulk supply: With the production capacity of 500MW, we can produce large quantity every month. This can satisfy most customer requirement.

3.Usage and Applications of Poly Cells

Solar cells are often electrically connected and encapsulated as a module.

Photovoltaic modules often have a sheet of glass on the front (sun up) side, allowing light to pass while protecting the semiconductor wafers from abrasion and impact due to wind-driven debris, rain, hail, etc. Solar cells are also usually connected in series in modules, creating an additive voltage.

Connecting cells in parallel will yield a higher current;our solar cells have passed IEC Certification.

With high quality and stable quality. Our Cells can greatly improve the performance of Solar Modules.

4.Pictures of Product

Solar Cells A Grade and B Grade 3BB and 4BB with High Efficiency 19.1%

5.Packaging & Delivery of Poly Cells

Carton Box Package and Deliver by air. It should be noticed that it should be avoid water, sunshine and moist.

We have organized several common questions for our clients，may help you sincerely：

6.FAQ

1. What’s price per watt?

A: It’s depends on the quantity, delivery date and payment terms of the order. We can talk further about the detail price issue. Our products is high quality with lower price level.

2. Can you tell me the parameter of your solar cells?

We have different series of cells with different power output, both from c-si to a-si. Please take our specification sheet for your reference.

3. 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.

4. Can you do OEM for us?

Yes, we can.

5. 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 perfect time of receiving is related to the state and position of customers. Commonly 7 to 10 working days can be served.

Q:I am confused. I am planning to build a simple 2Watt solar system to power some lights in my house. . I wonder if it is possible to power up a 2Watt bulb using 2Watt solar power?2. Normally, when we are reading the power rating of a bulb, we will read the wattage, so what about the voltage and current rating?3. If the current is insufficient, will the bulb light up?I am having a solar panel that can output 2W power but I am not sure about the output voltage, how can I find out about the current? I am getting really confused.: . Practically no. You have to account for startup current, and losses in the system. Ideally you would size your solar planel to provide the power you need to charge batteries in the day, for your needs at night. 2. Watts=Volts times Amps Really you just need to match the load and supply for volts, and make sure the supply has enough capacity to run your load. Current will take care of itself., in that the load will take what it needs to do its work. 3. It will bring the voltage down, causing the light to be dimmer.

Q:Can solar panels be used in agriculture?: Yes, solar panels can be used in agriculture. They can provide clean and renewable energy to power various agricultural processes such as irrigation systems, livestock operations, and crop drying. Additionally, solar panels can be installed on farm buildings or in open fields, helping farmers reduce their reliance on traditional energy sources and lower their carbon footprint.

Q:Can solar panels be damaged by birds or other animals?: Yes, solar panels can be damaged by birds or other animals. Birds may build nests under the panels or peck at the wiring, leading to potential system malfunctions. Similarly, other animals like squirrels or rodents may chew on the wires or cause physical damage to the panels. It is advisable to take preventive measures to protect solar panels from such animal interference.

Q:What direction do solar panels usually point? North? East? South? West?: I can't believe how many people posted wrong answers to this. Where are they looking? What are they thinking? In the northern hemisphere, solar panels are ALWAYS oriented due south. In the southern hemisphere, face them due north. I am typing on a computer that is running on a solar electric system that supplies my whole house. Been this way for years. So it works.

Q:I'm building a solar panel for the first time and have the tabbed solar cells. I put together 4 strings of 9 cells. And the cells are each 0.55V, 3.6A.Because I'm going to be using the panel indoors and leaning it up against a window pane, I put them in a 24x36 inch poster-size frame. The frame has a plexiglass cover and a thick cardboard backing. My question to you is this. Will the cardboard backing up against the metal underside (positive side) of the solar cells be ok? I don't know if it may catch fire or if holes may burn through when there's full sun.My guess here is it should be ok. But maybe I'm wrong. If I am wrong, or if something should be put in between, please let me know what I should use.Thanks everyone!: In commercial panels some sort of polymer is often used for backing. With a 2V panel there are 36 cells, which means they can still output about 4V for charging a 2V battery even when hot. The voltage reduces about 2.2mV per degree C per cell. Commercial panels are meant to work up to about 60 degrees C, which is quite normal in the sun. I have found just lying them on the grass the air circulation is reduced, and they get too hot to charge a 2V battery. This means the backing should have good thermal conductivity while being an electrical insulator, as well as mechanical strength. The cells are often encapsulated in a thermosetting plastic first, then laid face down so a liquid polymer can be poured as backing.. I have removed commercial panels from their frames and re-packaged them to work in a very wet environment. I suppose cardboard would work, but it is unlikely to have good cooling so the expected voltage would be lower. As you intend to only operate indoors I suppose it is unlikely you have full sun most of the time anyway, so there could be less heating and less output current accordingly. I think the cardboard is only useful for a short time, and is not strong enough. Temperature wise it is marginal. The link below uses plywood for the backing. The backing is supposed to provide strength too. A sheet of some sort of plastic or laminate (including melamine laminate as in kitchen bench tops) comes to mind too. The cells are supposed to be bonded to the backing for better thermal conductivity. Use silicon RTV to stick cells to the backing, very thinly.

Q:Why can't they put solar-panels on the blades and sides of the 300-500 foot tall turbines? Wouldn't this increase effeciency? Therefore, boosting pay-back time, profits, energy-output?: Hmm, okorder /.. Glad to see you thinking though, keep it up! Knowledge is power the more knowledge you gain about a variety of subjects processes the more you truly understand the truth depth of that statement.

Q:my solar panel is 5v 50 mA, and im making iphone USB charger so i need to connect + with 00 ohm resister and to data - and + so what resister will be okay..?: Just connect the 5 volts out of the panel directly to the iphone via an USB connector. BUT, is the panel output always 5 volts, ±0.25 volts? Because that is the USB specification, and anything outside of those values could damage your iphone. And solar panels are known for their wide swings in voltage. Bottom line, resistor not needed, and you need to be positive you supply the correct voltage to the iphone. Best way to do that is to start with a solar panel that puts out at least 7 volts and use a LM7805 regulator. The only resistors needed are those to tie the data lines into a certain combination of resistance and voltage so that the iphone is fooled into thinking that a proper USB is connected. That would NOT involve a 00 ohm resistor. Search online for the proper values and connections. edit: are you repeating your same inane question with a different account? That is totally against the rules and could get you suspended.

Q:i'm talking abt bulk panelling, how many MW do we get from km sq?: As okorder / They are working on a reactor that makes diesel and electricity concurrently out of coal, biomass or possibly garbage in a non-polluting process.

Q:Can solar panels be installed on the ground?: Yes, solar panels can be installed on the ground. Ground-mounted solar panels are a popular option for residential, commercial, and utility-scale solar installations. They are typically mounted on racks or frames that are secured to the ground, allowing the panels to capture sunlight and convert it into electricity. Ground-mounted solar panels are often preferred when there is limited roof space or for installations that require optimal positioning and easy maintenance.

Q:What is the efficiency of modern solar panels?: The efficiency of modern solar panels varies, but on average, it ranges from 15% to 20%. Some high-end panels can achieve efficiencies of up to 25%. However, it's important to note that the efficiency of solar panels is constantly improving as technology advances.

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