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36 Evergreen Solar Cell string ribbon Clipped Tab

Post Date : March 26
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Item# 36-evergreen-solar-cell-string-ribbon-clipped-t36
Regular price: $77.99
Sale price: $64.80

Item# 36-evergreen-solar-cell-string-ribbon-clipped-t36
Regular price: $77.99
Sale price: $64.80
Product Description


Please note: these 3x6 string ribbon type solar cells have been tabbed, but tabs have been clipped, (click on the picture to see a enlarged picture for details) leaving the tabs on the bus bars but both remaining tabs still have a short end that still protrudes out beyond the edge fo the cell. So there are two ways you can use these cells:

A) Simply apply flux on the end of the tabbing wires where they are cut off, and solder another section (3 inches long) of the tabbing wires to lengthen it. Typically you don't need to add extra solder becasue the tabbing wires that we provide are already coated with tin solder. So, flux and solder. B) Use a soldering iron to heat up the wires and gently remove the clipped tabbing wires, and then apply flux and solder another full 6 inch long tabbing wire. These cells are really very good and very wholesome cells. Some tiny chips are possible, but they are very rare in this category. Because the tabs have been clipped, we rate them A-.This set of new 3"x6" solar cells are string ribbon multi crystalline cells made by a reputable and major world class solar manufacturer, and the cells have the smallest carbon foot print - they waste the least silicon in making these cells. The cells are the original factory standard cell size. The cells have never been used on panels, but they have tabs being soldered on the front side. We are fairly confident that you will like these cells. Our sorting team tries to do as good as a job possible to categorize the cells. We stand by our products. If you think the solar cells don't meet your expectations, send them back within 7 days for a guaranteed refund or replacement. From the enormous number of cells that we shipped this past couple of months, returns have been essentially negligible.

I: Solar Cells:

The factory standard cell specifications are the following (under perfect testing conditions), though the individual cells can be above or below these standards.

Cell Specifications:
Average Power (Watts): 1.75 W
Average Current (Amps): 3.5 amps
Average Voltage (Volts): 0.5 V
Thickness 200 μm = 0.2 mm
Exact dimension: 3 1/4 inches x 6 inches, or 80 mm by 150 mm
Weight: Just above 6 grams, or 0.2 oz.

Some useful information in making solar power:

How to make sense of the above numbers:

The basic and very important formula you need to know to make sense of solar cells is this: Power (P) = Current (I) Multiply by Voltage (V), or P=I*V Power's unit of measure is watt,
Current's unit of measure is amp,
Voltage's unit of measure is volt.

So in our solar cell's specific example, if each solar cell is rated at 1.75 watts on average, and the voltage is 0.5, you do a little algebraic math, then to get the amps (I), since P=I*V, so I = P / V , therefore I (amps) = 1.75 watts divided by 0.5 volts = 3.5 amps.

It's important to understand the concepts of series connection and parallel connection when stringing these solar cells together to make a solar panel. Series connection of the cells increases voltage but not amperage; parallel connection of the cells increases amperage but not voltage. Series connection is when you connect the positive terminal of a cell with the negative terminal of the next cell. Parallel connection is when you connect the positive terminals of all cells in the set of cells with a tabbing wire and all the negative terminals of all cell in the same set. You can use a combination of series and parallel connections to get the right voltage and amperage for your solar panel.

The cell specifications above were given to us by the manufacturer as averages. Variations are possible. To make a 18 volts panel, for example, you connect 36 cells in series (36 cells times 0.5 volt each = 18 volts). And 36 * 1.75 (each cell in theory averages 1.75 watt) watt = 63 watts. The amps you will be getting is 63 watts divided by 18 volts = 3.5 amps.

Solar cells basics:

The front of the cells (blue side, aka Sunny side) has two thick white lines, called bus bars. They are the negative terminals of the cell. The back side, where the 6 square dots are, are positive terminals. Connect the tabbing wires from the bus bar of the first cell on one side to the three dots of on the back side of the next cell. That way you have a series connection. Repeat the process on the other side of the cells. In panel making you should connect all the tabbing wires on the front for all the cells first, then flip the cells over to solder the back side in a second step. Some solar cells such as SunPower cells have both positive and negative terminals at the back of the cells, but we don't have to worry about them. Most cells are negative on the front and positive on the back.

The white color bus bars on front and the contact points on the back are made out of silver, and you should keep them intact. Apply solder on your them and the wires should bond.

Testing:

Make sure that you test the cells under strong sun light with the front of the cell facing the sun, at the same time connect your meters to the right terminals. If you are inside the building, make sure you shine your sun simulating lamps onto the front of the cell while testing. Place the solar cells on a metal plate, ideally made from copper. With a warm light (ie halogen lights) shining on the cell, put your positive lead from your multimeter on the plate, and the negative lead of your multimeter on the bus bar. Your multimeter will be set to typically check amps or voltage at one time.

Panel configuration:

For those who are new to solar panel making or if you don't have an engineering background, here is our recommendation:

1) Make small panels first so you gain experience.

2) In most situations, make either 36 or 72 cell panels, and connect them in series. 36 cells give you 17.5 or around 18 volts or so. And 72 cells doubles that. These panels are very useful, and you will find a lot of matching products that will want to buy! For example, you almost always want to use a charge controller if you make your panels to charge batteries. Charge controllers usually come in 12 or 24 volt settings, which match your panels' 18 and 36 volts very nicely. Yes, your panel voltage should be 1.5 times the voltage of the battery you intend to charge. Connect more panels together if you want to tie to the grid, in which case, always use an inverter. However, we always recommend that the panels that you make for yourself be used in off-grid applications, such as charging your batteries to be used in RV, remote cabin, or marine settings. If you intend to connect to the grid, it is wise to buy the professionally made, UL certified panels.

3) For a lot higher voltage panels and configurations, consult a professional. Just don't fry yourself.

Soldering:

If you want to become a serious panel maker, buy a good soldering iron whose temperature can be adjusted. Don't get a cheap iron. It's one of the most important tools you need to have. Get those that have a flat soldering tip / head.

Company Related ProductsView the Seller's Products
Everbright Solar Education Kit

Everbright Solar Education Kit

Everbright Solar Education Kit

SKU010-01101 Solar Education Kit
Item# SKU010-01101
Regular price: $89.00

SKU010-01101 Solar Education Kit
Item# SKU010-01101
Regular price: $89.00
Sale price: $69.00
Product Description
Learn the essentials of solar power and the theories of series and parallel connections through lab exercises. Each kit includes a multimeter, four 1.5 volt 500 mA mini solar panels, one .5 volt 500 mA mini solar panel, four connection wires with alligator clips, a mini motor. This solar education kit does not involve any soldering, so they are perfectly safe for younger solar students, compared to the DIY solar panels kits, which require the use of soldering irons, and work with bulky components such as big sheets of glass. Everbright Solar's solar education kits are currently being used by leading solar training programs in the United States.

After you learn about the solar through the kit, all of the kit components can be directly utilized in many other small solar projects. The 1.5v solar panel is comparable to a regular D size battery and it can be used to power a small water pump for your fountain. The use of these components is only limited by your imagination. This solar education kit includes the following Items:

1) A multimeter (models and color may vary) that measures DC voltage and amperage, AC voltage and amperage, resistance of resistors, connectivity, etc. Rated at 10 amps maximum. Test leads are included.

2) Four 1.5v, 500 mA solar panels made from Evergreen solar cells, which have the smallest carbon footprint in the world.

3) One .5v, 500 mA solar panel made from Evergreen solar cell, which have the smallest carbon footprint in the world.

4) One DC motor rated at 1.5v and 2000 rpm. Easily powered by the 1.5v solar panels includes. Serial connect or parallel connect the 1.5v panels includes to see the effect it has on the motor speed. The motor is good for use in toys and motorized model airplanes, boats, etc.

5) Four connection wires with alligator clips on both ends of the wires. Two are red; the other two, white.

2. Shipping

We ship the packages via US Postal Service priority mail, and we buy USPS delivery confirmation for all of the shipments at our own expenses. Please choose the right shipping option (Cells and Kits - Priority Mail Shipping) when checking out. To minimize problems in calculate shipping rates for large orders, please call 1-510-498-8221 Monday through Friday from 9 am to 5 pm PST.

3. Product Returns

We stand by our products, if you don't like the solar panels, simply return it to us for a complete refund. We provide a no questions asked 30 day warranty

Detail more >>
Everbright 60 watt solar panel made from Evergreen solar cells

Everbright 60 watt solar panel made from Evergreen solar cells

Everbright 60 watt solar panel made from Evergreen solar cells

Item# SKU030-02101
Regular price: $199.00
Sale price: $159.00

Item# SKU030-02101
Regular price: $199.00
Sale price: $159.00
Product Description


1. Product Details:

Model number: 60(17)P775X650

The 60 watt solar panels professionally made from 36 full size Evergreen solar cells are ideal for off grid applications such as 12v battery charging and any other devices that expect 22 Voc and 3.6 Isc(A) from output from this panel. This is the flag ship solar panel from our Everbright series of solar panels that represents the best price / performance on the market. At 30 1/2 x 26 inches and 14 lbs, this 60 watt solar panel is very easy to transport and handle, and you can easily combine two or more of these solar panels to get 120, 180, and 240 watts of power with a variety of voltage and amperage settings for maximum flexibility. Connect two of them in series to get 36 volts to charge 24 volt batteries if you want, or connect them in parallel to get 7.2 amps of current. The application of this solar panel is endless.

The following are the key technical data of the solar panel, with a +-5% variance;

Peak power: 60 watts
Peak power voltage: 17.4 V
Peak power current: 3.4 A
Open circuit Voltage: 21 V
Short circuit current: 3.6 A
Maximum system voltage: 600 V


Solar Panel Features:

* Made of Evergreen solar cells, the lowest carbon footprint in the world.
* Industry standard junction box rated at IP65.
* Bypass diodes minimize damage from hot spots from defective cells and shading.
* 36 inch long cables with male and female connectors for easy connections with other solar panels.
* High quality ultra white low iron solar glass for minimal light reflection, maximum light transmission, and tempered against hail assault.
* Industrial strength double EVA encapsulation with TPT back sheet for the best protection against water, moisture, an oxidation.
* Ultra sturdy extruded aluminum frame provides structural strength and holes drilled at the right places for easy mounting.


2. Shipping

Shipping is a flat rate of $34.95 to 48 continental United States, and we only ship to these states and no where else. We ship the packages via US Postal Service priority mail, and we buy USPS delivery confirmation for all of the shipments at our own expenses. Please choose the right shipping option (60 Watt Panel Priority Mail Shipping) when checking out. If you are buying more than 5 of these panels in one order, choose Ground Freight, which is cheaper. Everbright reserves the right to make shipping charge adjustments or deny shipping the product if the wrong shipping method / payment were chosen. To minimize problems in calculate shipping rates for large orders, please call 1-510-498-8221 Monday through Friday from 9 am to 6 pm PST.

3. Product Returns

We stand by our products, if you don't like the solar panels, simply return it to us for a complete refund. We provide a no questions asked 30 day warranty
Detail more >>
You may also be interested in:solar tabbingstring ribbonEvergreenSafe Cell Tabribbon clipsSolar String
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