Mono 300W Solar Panels Made in China for Sale

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10000 watt
Supply Capability:
1000000 watt/month

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Item specifice:

Material: Monocrystalline Silicon Max. Power(W): 300 Number of Cells(pieces): 72

Product Description:

Product Description

300W Monocrystalline Solar Panel

Mono 300W Solar Panels Made in China for Sale
Electrical Characteristics

Optimum Operating Voltage (Vmp) 37V
Optimum Operating Current (Imp)8A
Open Circuit Voltage (Voc) 44.6V
Short Circuit Current (Isc) 8.5A
Module Efficiency >=17.6%
Operating Module Temperature -40 ºC ~+85 ºC
Maximum System Voltage1000V
Power Tolerance 0/+5  W+/-3%

Mechanical Characteristics

Solar Cell Monocrystalline
No. of Cells72(6*12)
Dimensions 1950*992*45mm
Front Glass 3.2mm high transmission, Low Iron, Tempered Glass
Frame Anodized aluminium alloy
Junction Box4mm2, length 1000MM,TUV

Temperature Characteristics

Temperature Coefficient of Pmax-0.47/ °C 
Temperature Coefficient of Voc -0.38/ °C 
Temperature Coefficient of Isc+ 0.1/ °C 


12-year product warranty
25-year linear performance

2pcs/carton, 180pcs/20GP or custom


1. This monocrystalline 72-cell 270-310W solar module has a high performance efficiency up to 18%.
2. Long Service Life can reach more than 25 years under maintenance according to stipulation.
3. Reliable quality leads to a better sustainability even in harsh environment like desert,farm and coastline 
4. High Transmission, Low Iron Tempered Glass adopted.
5. Advanced Cell Encapsulation.
6. Yunkai modules are proven for the reliability and superior field performance due to high-standard raw materials used, stringent quality control process and advanced manufacturing technologies.


1. Solar power station, field operation some huge engineer construction;
2. Living house and home building;
3. Office building, factory and warehouse;
4. other industrial and commercial applications.

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Q:Solar Energy - What would these solar panels power?
note breath on the winds excellent answer is one quarter of one percent. See why houses aren't covered in solar panels? it's just not a real answer right now,. the rough rule of thumb is $0 per kWh ( for just the panels) you want to produce. You'd need $20,000 in panels and another 0,000 in controllers and inverters and batteries and who knows how much in installation.
Q:How do you make a homemade solar panel?
you cant make solar panels to generate electricity at home. A LOT of high tech equipment is needed. About the cheapest option is to use solar powered garden lights but that is all you'll get is a bit of light.(Google making solar panels) You should be able to make up a windmill powered generator though (but dont expect much power out of something you can make easily) Do some research yourself
Q:What about solar panels?
This is a site that can help you estimate the size and number of panels that will power what you intend to provide for. There are plenty of sites selling the panels, so compare prices. Also, check whether your state is offering the rebate like the state of CA is and what the restrictions, terms and conditions are. Even with the rebates they are very costly, so be certain to calculate the pay off period for your application to see whether it is a cost efficient option for your energy usage.
Q:solar panels disconnected from battery?
Know that solar panels almost always incorporate a blocking diode to prevent a battery from back-feeding through an un-illuminated panel. Know that solar panels are usually connected to a battery via an electronic switching charge controller, not directly connected. Know that when a solar panel is open-circuited (disconnected from everything) it's terminal voltage will rise to almost twice it's nominal voltage. (22V is common for a 2V panel), unless it is stored in total darkness.
Q:What are the main components of a solar panel?
solar cell is the key component.
Q:should i get a solar panel?
I think solar panels benefit people a lot,it is worth buyingsolar power can be converted into heat energy and electricity which be used into daily human life,more convenient and safe,Also,solar power will not discharge any polluted gas,it can protect our earth.As for the negative,the price of solar power is a little higher at first pay,but you will not pay any fees any more.
Q:How would you connect a solar panel to a fan?
If your fan uses a tiny motor like in a cell phone vibrator, you might be able to use just a few solar cells. Otherwise, you might find the voltage and current from a pre-assembled panel, and get a fan that uses less power. You will then likely need electronics to match the two up, and maybe a battery to keep it going when the sun goes down.
Q:Solar panels for car fans?
You may not like it, but the answer's still the same. A car fan will draw anything from a few to several hundred watts, depending on which fan you're talking about (A/C, ventilation, cooling). A solar array will take up roughly one square meter to generate 00 Watts with the sun shining straight down onto it, so you'll need to cover (more or less) the entire roof (or hood) with solar cells in order to power that fan (minimum). If you still want to go ahead: Solar panels, Fuse, cables. Preferrably one cut-out diode per panel (in addition to the hopefully present internal diodes in the panels) in order to prevent one panle dumping its load into the next instead of into the fan. Much better option: get a low power fan (e.g a slow running computer fan) and connect it to that panel of yours. These fans make do with about 0 Watts (at a much lower air throughput), so you'll actually have a chance of running it from the solar panel without coverig your car in panels.
Q:Any tips for protecting my solar panel from high winds?
Solar panels are a costly and significant investment. Therefore, protecting them from harm should be a top priority. Unfortunately, moisture and water are common ways for solar panels to become damaged or broken. Safekeeping solar panels from both of these threats is a simple, inexpensive procedure, and doing so might save the solar panel owner a bundle if carried out correctly Instructions : Set a thick strip of silicone between each cell when putting the solar panel together, in order to prevent moisture seepage. 2: Use Plexiglas instead of glass as the face of your solar panel. Plexiglas is less liable to break and therefore safe from hailstorms or accidents. 3: Glue adhesive silicone to each side of your solar panel(s), adding additional sealant and protection from water to your commodity. :)
Q:I have 700watts ups and 2V,65amp battary..i want to add solar panel to just only charge my 2v,65amp batt.?
Are or hook up several meters and supervise the process regularly. The UPS has no role in the charging—only the discharging.

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