High Efficiency Longi/Trina/Ja/Jinko/Tongwei/Canadian Tier1 620W Solar Panel with Free Shipping/Inverter
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Product Highlights
- 30-Year Warranty Coverage: Comprehensive warranty covering all solar panels for 30 years.
- High Efficiency Performance: Monocrystalline TOPCON cells with up to 23.22% module efficiency.
- Low Light Condition Stability: Stable power output from 6am until 6pm even in low light.
- Advanced Quality Control: Three-step testing including EL, Flash testing, and automatic production.
- Durable Mechanical Design: 3.2mm coated tempered glass front and anodized aluminum alloy frame.
- IP68 Rated Junction Box: Weatherproof junction box with 3 bypass diodes for safety.
- Global Certifications: Certified by CE, IEC, ISO, ROHS, INMETRO, and FCC standards.
- Fast Delivery Time: 15 working days delivery after payment for one container.
Product Attributes
- Customization
- Available
- After-sales Service
- 7*24hours
- Warranty
- 30years
- Model NO.
- GKA600W
- Number of Cells
- 78PCS
- Application
- Household, Industial, Agriculture
- Condition
- New
- Certification
- CE
- Material
- Monocrystalline Silicon
- Weight
- 28kg
- Nominal Power
- 600W
- Voltage at Nominal Power(Vmp)
- 41.69V
- Current at Nominal Power(Imp)
- 18.58A
- Transport Package
- by Carton & Pallet
- Specification
- 2333*1134*35mm
- Trademark
- Gamko
- Origin
- China
- HS Code
- 8541403000
- Production Capacity
- 1gw Annual
- Package Size
- 230.00cm * 115.00cm * 5.00cm
- Package Gross Weight
- 31.000kg
Shipping
- Shipping Cost:
- Contact the supplier about freight and estimated delivery time.
Online Trading Protection
- Payment Guarantee
-
Platform-protected payments with refund support for eligible order issues.
- Platform Logistics
- Clearer shipment tracking with platform-supported logistics.
- Inspection Service
- Optional pre-shipment inspection for quality and quantity checks.
- After-Sales & Dispute Handling
- Platform-assisted dispute resolution, including refunds or returns when applicable.
Only orders placed and paid through Made-in-China.com Secured Trading are eligible for payment protection and the corresponding platform services.
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Product Description

| GKA182N144 580W-600W |
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| SPECIFICATION | ||||||||||||||||||
| STC NOCT | STC NOCT | STC NOCT | STC NOCT | STC NOCT | ||||||||||||||
| Maximum Power(Pmax) | 580W 437W | 585W 441W | 590W 445W | 595W 449W | 600W 453W | |||||||||||||
| Open Circuit Voltage (Voc) | 51.57V 49.14V | 51.71V 49.32V | 51.84V 49.50V | 51.98V 49.68V | 52.11V 49.86V | |||||||||||||
| Short Circuit Current (Isc) | 14.33A 11.57A | 14.40A 11.63A | 14.47A 11.69A | 14.54A 11.75A | 14.61A 11.81A | |||||||||||||
| Voltage at Maximum Power (Vmpp) | 43.09V 39.91V | 43.24V 40.02V | 43.38V 40.16V | 43.53V 40.31V | 43.67V 40.45V | |||||||||||||
| Current at Maximum Power (Impp) | 13.46A 10.95A | 13.53A 11.02A | 13.60A 11.08A | 13.67A 11.14A | 13.74A 10.20A | |||||||||||||
| Module Efficiency STC(%) | 22.44% | 22.64% | 22.83% | 23.02% | 23.22% | |||||||||||||
| MECHANICAL CHARACTERISTICS | |||||||
| Cell type | Monocrystalline TOPCON 182*186mm | ||||||
| Number of cells | 120(6x20) | ||||||
| Module dimensions | 2333*1134*30MM | ||||||
| Weight | 25kg | ||||||
| Front cover | 3.2mm coated tempered glass | ||||||
| Frame | Anodized aluminum alloy | ||||||
| Junction box | IP68 rated (3 by pass diodes) | ||||||
| Cable | 4mm2(0.006inches2),Portrait: 300mm(11.81inches); | ||||||
| Connector | PV compatible | ||||||
As a professional solar module manufacturer, Gamko with 7 years experience in production and quality control since 2017.
Gamko also a provider of technical services for solar power plant (on-grid and off-grid), including technical design, transport, installation and maintenance.
In 2023, Gamko annual capacity 1.2GW.
Gamko modules have been certified by CE-EMC, CE-LVD, INMETRO, ROHS, JPEA, FCC, IEC61215,IEC61730, IEC62321,IEC61000, ISO9001, ISO14001, German EPR,France EPR.
KEY FEATURES OF GAMKO SOLAR PANEL:
1, High performance in Low light condition , stable output from 6am until 6pm. High voltage.
2, High efficiency, solar module up to 23% efficiency.
3,Top-corn and Perc technology.
4,Three steps quality control of EL testing, Flash testing. Automatic production line to avoid hidden cracks.
5, Warranty cover all the solar panel 30 years.
If you need the best price, the best quality, the most secure payment method, GAMKO is your best choice.













Our Services:
- OEM Welcomed
- Warranty: 30 Years
- Certifications can be supported
- Sample for testing is supported
- After-Sale Service: 24 Hour-Hot Line for Consultancy and Technical Support
Q1:We like to buy your panels, cause the price is good, but the price is not most important, I don't like to buy the trash, how do I know your solar panel have a good quality, everybody say they are A grade panels, how I can trust you?
A:Firstly, we make new panels not stock panel, we will providing the flash test report,Series number, Power rates , voltage, current all mentioned on the flash test report for individual solar panel, The stock panel have no any database. You don't know if they are defective or broken panels. But its not enough. Please ask Gamko provide the flash test photo and EL photo for each panel.Q2:It's my first time purchase in China, I'm worried about the security of my payment. I'm worried about not being able to deliver on time. I'm worried that the goods I receive are much less than what I expect, and there is no return channel.
A:Our regular payment is 30% in advance and 70% before shipment, we accept third party inspection before shipment. We also accept LC at sight. For some countries, we accept 30% prepayment and 70% payment against copy of bill of lading.All the above payment methods are acceptable to our company.
Q3:How To Ask for Support if product failure in warranty?
A:1. Email us about the PI number, serial number, product S/N number, PCB board number most importantly, is the description of failure products on the condition that it is operated correctly, to the best, show us more detailed pictures or video.
2. We will submit your case to our after-sales department to satisfy your demand. However, we believe our quality, and I believe if any quality problem, you can get the refund from our company directly
3. Usually, within 24 hours, we will email you the best solutions.
https://gamko-solarpanel.en.made-in-china.com/product-list-1.html
About the Supplier
Company Profile
Gamko Energy, Solar panel manufacturer. Produce 5W-800W mono and poly solar panel, flexible solar panel, bi-facial solar panels.
As a professional solar module manufacturer, Gamko with 8 years experience in production and quality control since 2017.
Gamko also a provider of technical services for solar power plant (on-grid and off-grid), including technical design, transport, installation and maintenance.
In 2023, Gamko annual capacity 1.2GW.
Gamko modules have been certified by CE-EMC, CE-LVD, INMETRO, RoHS, JPEA, FCC, IEC61215, IEC61730, IEC62321, IEC61000, ISO9001, ISO14001, German EPR, France EPR.
KEY FEATURES OF GAMKO SOLAR PANEL:
1, High performance in Low light condition, stable output from 6am until 6pm. High voltage.
2, High efficiency, solar module up to 23% efficiency.
3, Top-corn and Perc technology.
4, Three steps quality control of EL testing, Flash testing. Automatic production line to avoid hidden cracks.
5, Warranty cover all the solar panel 30 years.
If you need the best price, the best quality, the most secure payment method, GAMKO is your best choice.
About Our Factory & Business Background
- Address
- 10 #-B-1f, No. 606, Kaifa Avenue, Dagong Sci&Tech Industrial Park, Haian County, Prc, Nantong, Jiangsu, China
- Average Lead Time
-
Peak Season Lead Time: within 15 workdays
Off Season Lead Time: within 15 workdays
Our Production Capability & Technical Expertise
Our Industry Experience & Global Business Record
- Main Markets
- Africa, Eastern Asia, Western Europe, Mid East, Eastern Europe
FAQ
- How can I trust the quality of your solar panels?
- We provide new panels with flash test reports, series numbers, power rates, voltage, and current for each panel. We also offer flash test photos and EL photos for every panel to ensure they are not defective stock panels.
- What are the payment terms and security measures?
- Our regular payment is 30% in advance and 70% before shipment. We accept third-party inspections, LC at sight, and for some countries, 30% prepayment with 70% against bill of lading copy.
- How do I request support if a product fails during the warranty?
- Email us with the PI number, serial number, PCB board number, and a detailed description of the failure with pictures or videos. We will submit your case to the after-sales department and provide solutions within 24 hours. Refunds are available for quality issues.
- What is the delivery time for orders?
- The delivery time is 15 working days after receiving payment for one container, applicable during both peak and off-peak seasons.
- What certifications do your solar panels have?
- Our modules are certified by CE-EMC, CE-LVD, INMETRO, ROHS, JPEA, FCC, IEC61215, IEC61730, IEC62321, IEC61000, ISO9001, ISO14001, German EPR, and France EPR.
- What is the warranty period for the solar panels?
- We provide a 30-year warranty that covers all solar panels.
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