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On - Grid / Off - Grid Monocrystalline Solar Panel 340W With Black Mono Cells

Good quality Polycrystalline Solar Panel for sales
Good quality Polycrystalline Solar Panel for sales
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On - Grid / Off - Grid Monocrystalline Solar Panel 340W With Black Mono Cells

China On - Grid / Off - Grid Monocrystalline Solar Panel 340W With Black Mono Cells supplier
On - Grid / Off - Grid Monocrystalline Solar Panel 340W With Black Mono Cells supplier On - Grid / Off - Grid Monocrystalline Solar Panel 340W With Black Mono Cells supplier

Large Image :  On - Grid / Off - Grid Monocrystalline Solar Panel 340W With Black Mono Cells

Product Details:

Place of Origin: Ningbo,China
Brand Name: LongSun Solar
Certification: ISO9001:2000, CE, EMC, LVD
Model Number: LS-340W-M

Payment & Shipping Terms:

Minimum Order Quantity: 50pcs
Price: Negotiable
Packaging Details: Single carton packing, pallets packing, wood cases packing.
Delivery Time: 7-15days after receiving your payment( exactly based on your order quantity)
Payment Terms: L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability: 10000pcs/ month
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Detailed Product Description
Material: High Efficiency MONO Solar Panel 20.5%-21% Description: Black Mono Crystal Solar Panel 340W
Size: 1950*990*45mm Cell Size: 156.75*156.75mm
TPT: Hot Seal Made Of Frame Resistance Glass: 3.2mm High Transimission Glass
EVA: White 0.29mm Thickness Frame: Anodized Aluminum Frame
Warranty: 10years Using Life: 25years
Cells Quantity: 6*12( Totally 72cells) Grade: A

340W 72cells Mono Solar Panel for 20KW on grid solar system


High-output solar panel is made of polycrystalline or monocrystalline solar cells with high efficiency which is as high as 20-22 %. It is currently the best solar panel, with a common type of 270-290W or 320-350W.

Power tolerance range(ensure output power in -3 ~ +3 % positive and negative tolerance range). The product has excellent weak light performance. And also the wind(2400 Pascal) and snow(5400 Pascal) loads that can withstand strong winds and snow.

All the Solar panels have a lifetime of more than 25 years under reasonable use. 90 % output power is guaranteed within 10 years and 80 % output power is guaranteed within 20 years.


This series of the solar panels are popular in the international market.

The panels can be used for the solar power system, solar power station and EPC project.

Performance parameters:
Excellent module efficiency up to 21-22%
Dust cover reduces power loss(dirty effect)
Excellent dark light.
IP67 junction box for long-term endurance
Heavy snow loads up to 5400pa
Resistance to fog, ammonia and sand, for seaside farms and desert environments.



Quality and safety:
Industry Leading Online Quality Assurance
Strong 40mm strong frame, can hold 5400pa load
Resistance to salt fog, ammonia and sand lifting, suitable for seaside, farm and desert environments
25 years linear performance guarantee





Technical data:

cells size(mm): 156*156
Tolerance: ±3%
Optimum power voltage(WP): 350w
Optimum power voltage(Vmp): 36.0
Optimum operating current(Imp): 9.72
open circuit voltage(Voc): 43.2
short circuit current(Isc): 10.79
Max system power(VDC): 1000V(IEC)
Working temperature range: -40℃ to + 85℃
Efficiency : 18.44%
Max temperature cofficient: -0.48%/℃
Temperature cofficient: -0.34%/℃
ISC temperature cofficient: 0.015%/℃
Rated operating battery: 45+/-2℃
Standard test conditions( STC) 1000W/M²; 1.5AM
Type of connectors: MC4
Size(mm): 992*1950*40



On - Grid / Off - Grid Monocrystalline Solar Panel 340W With Black Mono Cells


Materials of solar panel

1).Solar Cell------Mono-crystalline solar cell 156*156mm

2).Front Glass-------3.2mm, high transmission, low iron, tempered glass

3).EVA-------excellent anti-aging EVA

4).TPT-------TPT hot seal made of flame resistance

5).Frame------anodized aluminum profile

6).Junction Box-------IP65 rated, high quality, with diode protection

Superiority: high quality anodized aluminum frame, high efficiency long life, easy installation, strong wind resistance, strong hail Resistance.




Recommended applications:
1. Any large or small connected or off-grid solar power station.
2. Roof systems for commercial and industrial buildings
3. Biochemical system.
4. Any commercial or industrial ground installation system
5. Solar TV sets, solar power generation, solar water heaters, solar street lights, road solar street lights, solar vehicles/electric vehicles, satellites, spacecraft, space solar power stations, energy-saving lights, environmental protection.




Is solar power difficult to use?
Although the production of solar panels incorporates a high-tech manufacturing process, it is really very easy to use a photovoltaic system. Solar panels have no moving parts to wear out, they can be used alone or in combination with other energy sources, and they are silent, reliable and long lasting.

What can you power with Photovoltaics?
A properly designed photovoltaic system can supply electricity for many applications, from small remote lighting needs to megawatts of power for large utility companies. An advantage of photovoltaic power is that it can do anything a traditional power generator can do, only without consuming pollution-causing fuel, or requiring noisy motors.

What is a PV system?
A PV system consists of all the equipment and materials needed to generate solar energy, including solar panels (often called modules), a support structure, wiring, an inverter, a meter and other equipment as required by a specific application. Longsun Solar’ s PV system for commercial buildings, and ET Solar system for residential uses are examples of complete PV systems.

What is a solar module?
Solar modules are series of solar cells, wired together and enclosed protect them from the environment. They are often referred to as in self-contained glass units to solar panels as well.

How do solar cells work?
Solar cells are solid-state devices in which photons (or packets of light) collide with atoms. This process transforms the resulting into electrons. These electrons flow into wires connected to the cell, thus providing electric current to appliances, lighting systems or other electrical loads; and all of the power comes directly from the sun.

What is Photovoltaic Power?
Photovoltaic (PV) power is a term used to describe the process of converting sunlight into electricity with solar cells. These cells are specially constructed from semiconductor materials, and are treated to generate a flow of electricity when sunlight shines on them.


About us:

Longsun Solar( old Kelan Solar), established in 2008, is a professional green power producer and exporter of solar panel and solar module in Ningbo, China.

Our main products are 2 -350 watt mono crystalline and poly crystalline silicon solar panels in standard or special sizes and shapes. We also design solar street light system and solar power systems for homes and industrial use.

Our factory is located in Daxie development zone, with convenient transportation access. It closes to port of Ningbo.


Besides, we have received ISO9001 and CE certificates. High quality raw materials, strict control system, advanced technology and testing equipment ensure each piece of solar panel from LONGSUN SOLAR with extremely supper efficiency and long usage time of 25 years. Until now, our solar panels and systems were exported to the overseas market, like Southeast Asia countries, Middle east countries, South America countries and Africa.


Choose us means you get a reliable partner with mutual development and mutual benefits.



Why Choose Us?

  • Golden supplier approved by MIC.
  • Supply suitable price and high quality product.
  • Offer free samples before order confirmed.
  • Commitment to delivery on time.
  • Offer a perfect pre-sale and after sale service.
  • Providing fast and economical transportation solutions.
  • We guarantee that the product is 100% compensated.
  • Providing product certificate,instructions and installation method.
  • Long-term cooperative attitude and the concept of development together.
  • A professional R&D team with 9 years history and Perfect quality management system.


We have a wild range of successful project all over the world.

We have advanced ,mature and stable supply production line, support your request on solar market.


On - Grid / Off - Grid Monocrystalline Solar Panel 340W With Black Mono Cells




2pcs per box, with pallets or without pallets.


Quality and Safety

1. Rigorous quality control meets the highest international standards.

2. High-transmissivity low-iron tempered glass, strong aluminium frame.

3. Using UV-resistant silicon.

4. IS09001/14001/CE/TUV/UL








Payment Term







30% T/T in advance, paid the balance before shipment



30% T/T in advance, paid the balance against copy of B/L

L/C L/C amount above 50,000 usd, we can accept L/C at sight
West Union


Amount lower than 5000usd

West Union

Contact Details

Contact Person: Angela Fan

Send your inquiry directly to us (0 / 3000)