Cheap Solar Panels:A Grade and B Grade 3BB and 4BB High Efficiency 20.1% Solar Cells

Cheap Solar Panels:A Grade and B Grade 3BB and 4BB High Efficiency 20.1% Solar Cells System 1

Cheap Solar Panels:A Grade and B Grade 3BB and 4BB High Efficiency 20.1% Solar Cells System 2

Cheap Solar Panels:A Grade and B Grade 3BB and 4BB High Efficiency 20.1% Solar Cells

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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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Specification

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 20.1%

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: How do solar panels affect the property's operating costs?: Solar panels can significantly reduce a property's operating costs by generating clean and renewable energy, thereby reducing or even eliminating the need for traditional electricity from the grid. This results in lower monthly utility bills, as well as potential incentives such as net metering or feed-in tariffs that allow excess energy to be sold back to the grid. Additionally, solar panels require minimal maintenance and have a long lifespan, further contributing to cost savings over time.

Q: solar panels or light parts: They make lights that have solar panels built into them. Due to the solar cell, they can sense when it gets dark and thus switch on the light automatically. Look at Northern Tool or Harbor Freight web sites for ideas.

Q: Are there any tax credits available for installing solar panels?: Yes, there are tax credits available for installing solar panels.

Q: I have heard you can make your own solar panels.... But How?Where do you start? Is it cheap, or should I just BUY them already made?: if you're hoping to put 'em on your house and use 'em to supplement power from the grid, then you'll want to buy them. the panels have to be made with exotic chemicals, in a clean environment, with dangerous chemicals. anyone who tells you that you can make 'em yourself will be asking for money for the plans. in truth, you could get an old panel, and, if it was the right voltage, you could use it to charge your rechargeable batteries. typically, that's not the hoped for application. and, to get enough power for you house, you're not going to be able to do it yourself. whenever you buy anything, make sure you know what it can do. ie, read the fine print. if it's a few hundred (or thousand) dollars, it's not going to be useful to augment your home power. in addition to the strength, there's also the equipment that's needed to sync it up with the power from the utility, and that's neither cheap, nor a do-it-yourself project. i've seen lots of panels but when you read the specs, they're pretty useless. not good for battery charging, not for hooking up to your house. in other words, interesting projects with no practical use.

Q: I want to build a Solar Panel at home.Where can I find possibilities for Selfmade Solar Panels: You okorder /

Q: Can solar panels be installed on a building with historical significance?: Yes, solar panels can be installed on a building with historical significance. However, it is important to consider the preservation of the building's architectural integrity. Careful planning and design are necessary to ensure that the installation of solar panels does not compromise the historical value of the building.

Q: I would love to put in solar panels on my roof, but how hard would it be, and how expensive? Would I be able to do the work myself, or would I have to hire a pro?Also I live in Oregon, so much of the time it is overcast, so would it really be worth it?: Did okorder / . This will absolutely save yourself!

Q: I was just wondering what the minimum and maximm charging voltage and ampere is for li ion batteries. If i connect a solar panel, which only gets enough sunshine to generate voltage, will that still charge the battery, or would i have to series connect solar panels until they together reach 3,7volt?: One lithium cell requires 4.2V to obtain its full charge, Never exceed 4.2V ! Output from solar panel if below 3.7V , nothing charge to lithium. Total charging time until the cell is full depending on the AH rate of cell and the charging current that solar panel can be provided. Suppose cell is rate 5AH, and the charging current from solar panel under full sun shine can maintain 0.5A ( use solar panel short circuit current rate from its specification as a reference ) , hence, 0 hours is enough. And be sure the solar panel can maintain 4.2V output at 0.5A . Remember, over charge lithium cell one time might reduce its life into half . Therefore, let the solar panel output passing through a precision regulator to maintain output is 4.2V is the best way, because, as cell reaches 4.2V , no more charging current is forced into cell ( automatic stop charging ). If you do not have the knowledge to make this simple variable voltage regulator with LM37K ( if you choose this way, buy solar panel output has at least 2V) , you may choose to do it manually by install a current meter and a variable resistor in series between the panel output to cell. By adjust the value of resistor, charging current can be controlled ( if you choose this way, buy solar panel output has as less as 6V ). Count the charging time with a clock and adjust the charging current from time to time to maintain 0.5A .

Q: Can solar panels be installed on a boat or RV?: Yes, solar panels can be installed on both boats and RVs. In fact, they are a popular and efficient option for generating electricity in these mobile settings. Solar panels can provide a sustainable and renewable energy source, reducing the reliance on traditional power sources while providing power for various appliances and systems on board.