Poly Solar Panel 290W A Grade with Cheapest Price

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Item specifice:

Material: Polycrystalline Silicon Max. Power(W): 290 Number of Cells(pieces): 72

Product Description:

Poly Solar Panel 290W A Grade with Cheapest Price

Product description

60 cell multi-crystalline solar module. 40mm natural anodised frame. IP65 rated Jbox, 1m solar cable and a pair of MC4 connectors.TÜV SÜD,SABS ISO 9001:2008 certified.

Nominal voltage refers to the voltage of the battery that the module is best suited to charge; this is a leftover term from the days when solar modules were only used to charge batteries. The actual voltage output of the module changes as lighting, temperature and load conditions change, so there is never one specific voltage at which the module operates. Nominal voltage allows users, at a glance, to make sure the module is compatible with a given system.

Open circuit voltage or VOC is the maximum voltage that the module can produce when not connected to an electrical circuit or system. VOC can be measured with a meter directly on an illuminated module's terminals or on its disconnected cable.

Solar panel conversion efficiency, typically in the 20 percent range, is reduced by dust, grime, pollen, and other particulates that accumulate on the solar panel. "A dirty solar panel can reduce its power capabilities by up to 30 percent in high dust/pollen or desert areas", says Seamus Curran, associate professor of physics at the University of Houston and director of the Institute for NanoEnergy, which specializes in the design, engineering, and assembly of nanostructures.[16]

Poly Solar Panel 290W A Grade with Cheapest Price





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solar panel refers to a panel designed to absorb the sun's rays as a source of energy for generating electricity or heating.

A photovoltaic (in short PV) module is a packaged, connected assembly of typically 6×10 solar cells. Solar Photovoltaic panels constitute the solar array of a photovoltaic system that generates and supplies solar electricityin commercial and residential applications. Each module is rated by its DC output power under standard test conditions, and typically ranges from 100 to 365 watts. The efficiency of a module determines the area of a module given the same rated output – an 8% efficient 230 watt module will have twice the area of a 16% efficient 230 watt module. There are a few solar panels available that are exceeding 19% efficiency. A single solar module can produce only a limited amount of power; most installations contain multiple modules. A photovoltaic system typically includes a panel or an array of solar modules, a solar inverter, and sometimes a battery and/or solar tracker and interconnection wiring.


24-26pcs into carton 312pcs for 20 foot container 712pcs for 40 foot container.

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Q:Anyone know if there is a solar panel that you can travel with that is not USB plug in ?
Solar panels require a charge converter before it can be used by an AC source. There is no direct solar panel with built in charge converters that I know of because, when purchasing panels, you must purchase the wattage requirements of the job (this can be several panels linked), and a charge converter that will handle the <? panels required. A chain of stores up here in Canada have a portable battery pack that has a solar panel to increase its charge capacity or duration, but its not something you would want to lug around for long periods of time, because is weights in about 3 lbs.
Q:solar panels and hurricanes?
If your only deed is for power during outages, solar is not the way to go. You can add up all the wattages of the fridge and the lights you want to use, and see if the total is less than the capacity of the generator. If it is more, buying a larger generator is the answer. You can find the wattage of the fridge on the inside, or back. If not, Google the model number and manufacturer. You may already use CFL light bulbs, but if not, they can help reduce the load.
Q:Tell me the guidelines for making solar panels?
This okorder.com for more detail.
Q:Which solar panel should I choose?
the two may well be extra effective. while it particularly is cloudy and little solar (wintry climate) you have got a breeze. while it particularly is nonetheless and sunny, you have the solar. while the batteries are charged, extra potential from the windmill would nicely be shunted right into a resistance heater in a water tank, preheating important different and infants water, reducing that cost. draw back of windmills: there is a few noise. you do choose a tower of a few variety to get above treeline. it particularly is mechanical, so it particularly is going to choose periodic upkeep and would injury, or will placed on out, or be broken in a windstorm. Panels will final for some years, in simple terms would desire to be wiped sparkling of snow interior the wintry climate, and washed off, in case you reside in a dusty section. they are hard, however the glass would nicely be broken.
Q:solar panels and electrocution?
Q:Are our scientists making solar panels all wrong??
There are two basic types of solar panels. ) Thermal absorbers 2) Photovoltaics Thermal absorbers are black in order to convert sunlight to thermal (heat) energy. The whole idea is to capture all of the light with a dark surface, convert it to thermal energy and transfer the energy into your home for water heating or space heating. If you make the surface white or reflective, then the surface will absorb only a small fraction of the available light, hence the efficiency will be very low. In other words, the panel will not produce any heat. Photovoltaic panels produce electricity instead of heat energy. Photovoltaic panels are made from thin slices (“waffers”) of silicon with special coatings on the front and back surface. One of these coatings on the front is an antireflection coating to capture the light and channel it toward the silicon. Underneath the antireflection coating the silicon waffer is coated with other chemicals that convert the sunlight to electricity. The combination of these coatings gives the panel a dark color, usually blue or black. Here's the bottom line. If you want thermal heat or electricity from solar panels, the panels have to capture the light. When that light is captured, the surface appears dark because no light (or very little) light is reflected back to our eyes. It is not possible for a surface to be an efficient absorber, capturing all available light, and at the same time appear white or bright color or reflective to our eyes.
Q:What are solar panels made up of?
Solar panels (aka photovoltaic panel) are most often made up of thin wafers of crystalline silicon or cadmium telluride. As photons from the sun enter the photovoltaic cell, electrons are freed from the substrate when are then collected by wires that run throughout the panel. And as we know electrons=electricity!
Q:Need help with a solar panel?
In order: .  Just about any wire will do.  You can handle 50 mA over just about anything, even 28 gauge telephone wire.  Your biggest problems are probably going to be mechanical stress (you want stranded wire instead of solid, to avoid breakage) and dealing with the size of larger wires. 8 gauge speaker wire may be a good optimum. 2.  You need a diode.  If you're charging NiMH or NiCd cells you're going to have about .25 volts/cell; you can charge up to 3 of them in series with a 4.8 volt panel.  The solar panel is a bunch of diodes itself, but they're leaky in the reverse direction; the diode prevents the batteries from discharging themselves back through the panel.  You want a Schottky-barrier diode, because the forward voltage drop is about 0.2 volts instead of 0.7 volts for a regular silicon rectifier.  This gives you maximum current output from your panel.
Q:how much would it cost to generate MW electricity by solar panels??? and how much land it requires ?
I like Rouse's answer, which points to the factors to consider. If you are in India, adjust the inputs to match your local situation. For example, the peak equivalent sun-hours per day might be twice his figure, leading to half the cost. You might find panels that have a 25-year life, reducing the cost per kWh by another 20%. Land and/or labor may be cheaper, also reducing the cost.
Q:Is this a good kit for building a solar panel?
I okorder.com lower right corner is home built solar panels

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