How is the quality of the solar panel ensured before shipping?

We perform 100% EL testing and flash testing on every panel before packaging and shipping.

What is the power output tolerance?

The power output tolerance is 0 to +5 Watts.

What is the temperature coefficient of Pmax?

The temperature coefficient of Pmax is -0.37% per degree Celsius.

Rosen Solar Monocrystalline 5bb 120 Cells Half Cells Solar Panel 300W PV Module

Name: Rosen Solar Monocrystalline 5bb 120 Cells Half Cells Solar Panel 300W PV Module
Brand: Rosen Solar Energy Co., Ltd.
SKU: 880532945

Anhui, ChinaRosen Solar Energy Co., Ltd.

US$90.00

100-499 pieces

US$81.00

500-999 pieces

US$75.00

1,000+ pieces

Sample price:US$96.00/pieces.Request sample

Product profile

Customization

Available

Warranty

25 Years

Number of Cells

120cells

Model NO.

RS300M-120HC

Application

Industrial

Condition

New

Certification

EST, ISO, CB, CE, TUV, VDE, IEC61215, IEC617, Pid, Cec, Jet

Material

Monocrystalline Silicon

Weight

18.7kgs

Solar Cell

5bb Mono 156X156 Perc

Glass

3.2mm Tempered Low Iron

Junction Box

IP68 Rated

Cable

PV Cable 4mm^2, 900mm

Cell Orientation

120cells(6*20)

Connector

Mc4

Frame

Silver/Black Anodized Aluminium Alloy

Tpt Backsheet

White/Black Backsheet

OEM

Acceptable

Transport Package

30PCS/Pallet, Wooden Box

Specification

1675*992*35mm

Trademark

Rosen Solar/OEM/ODM

Origin

China

HS Code

8541402000

Production Capacity

15000PCS/Week

Key features

25-Year Warranty Coverage: Includes 25 years total workmanship and materials warranty with 25-year linear power output guarantee.

High Efficiency Cells: Monocrystalline 120 cells with efficiency up to 20.5% and power range 290-340W.

Durable Construction: Features 3.2mm tempered low iron glass, IP68 rated junction box, and MC4 connectors.

Global Certifications: Certified by TUV, CE, ISO, CB, VDE, IEC61215, IEC617, PID, CEC, and JET.

OEM Acceptance: Customized weight, cell type, glass, and backsheet options available for OEM clients.

Fast Delivery: Standard lead time within 15 workdays for both peak and off-peak seasons.

Proven Manufacturing: Founded in 2006 with 700MW production capacity and exports to over 160 countries.

Strict Quality Control: 100% EL and flash testing performed before packaging and shipping.

Company profile

Fast DeliveryOverseas ServicesCustomization from SamplesOEM Services

Rosen Solar Energy Co., Ltd.

Anhui, China

Business Type: Manufacturer/FactoryExport Year: 2008-01-01Nearest Port: Ningbo Port, Shanghai Port, Shenzhen PortAverage Response Time: ≤8.56hTerms of Payment: LC, T/T, D/P, etc.International Commercial Terms(Incoterms): FOB, EXW, CFR, CIF, DAT, FAS, DDP, DAP, CIP, CPT, Others, FCA

AI-Powered supplier vetting

SummaryRosen Solar Energy Co., Ltd. is identified as a Chinese manufacturer/factory offering solar panels, solar systems, lithium batteries, AGM/GEL batteries, and energy storage systems. The supplier reports broad customization, ODM, SDK availability, recent new-product activity, and OEM service for known brands. Its service procedures include documented assessment, corrective action, and complaint-handling records, although the approved-supplier list lacks approval signatures or dates. Overseas service is reported in Hungary for debugging, equipment installation, and training, but there are no overseas showrooms, agents, branches, or offline trade-show participation. Export sales represent 71%–90% of total sales, and the supplier reports peak- and off-season lead times within 15 working days. Production-scale information is inconsistent: one slice describes a battery factory with 145,000 square meters and more than 1,360 employees, while another lists 20 total employees. No certification information or...

Supplier typeThe supplier is explicitly identified as a Manufacturer/Factory and a limited company in China. Its stated product scope includes solar panels, solar systems, lithium batteries, AGM/GEL batteries, and solar energy storage systems, while it is not reported as part of a larger company group.

After-Sales capabilityThe supplier reports overseas services in Hungary, including debugging, equipment installation, and training. It also has written procedures and followed records for service assessment, corrective and preventive actions, and customer complaint handling; however, it has no overseas showroom, agent, branch, or offline trade-show participation, and its approved-supplier list lacks approval signatures or dates.

R&D capabilityThe supplier reports new-product activity during the past year, ODM service, and an available SDK. Its business scope also explicitly includes R&D and production of solar LED and optical-material products, supporting an active product-development capability.

Production capacityThe supplier states that it manufactures, processes, assembles, sells, and installs related products, and describes battery production across lithium, VRLA AGM, VRLA GEL, OPzS, and OPzV types for multiple applications. Production-scale evidence is inconsistent because one slice reports a 145,000-square-meter factory with more than 1,360 employees, while another lists 20 total employees; capacity cannot therefore be reliably quantified.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization. These capabilities are reported in both the R&D and design-service information, indicating broad customization coverage.

Client casesThe supplier reports providing OEM services for known brands, which is evidence of at least one type of customer engagement. However, no brand names, project details, order examples, or independently verifiable customer case information is provided.