What is the power output tolerance?

The power output tolerance is 0 to +5 Watts.

Is the junction box waterproof?

Yes, the junction box is rated IP67 for waterproof and dustproof protection.

PV Monocrystalline 300watt 300wp Solar Module Solar Panel 300W

Name: PV Monocrystalline 300watt 300wp Solar Module Solar Panel 300W
Brand: Rosen Solar Energy Co., Ltd.
SKU: 703889801

Anhui, ChinaRosen Solar Energy Co., Ltd.

US$75.00

100-499 pieces

US$72.00

500-999 pieces

US$69.00

1,000+ pieces

Sample price:US$75.00/pieces.Request sample

Product profile

Customization

Available

Warranty

25 Years

Number of Cells

60cells

Model NO.

RS300M-60

Application

Industrial

Condition

New

Certification

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

Material

Monocrystalline Silicon

Weight

18kg

Solar Cell

5bb Mono 156X156 Perc

Glass

3.2mm Tempered Low Iron

Junction Box

IP67 Rated

Cable

PV Cable 4mm^2, 900mm

Cell Orientation

60cells(6*10)

Connector

Mc4

Frame

Silver/Black Anodized Aluminium Alloy

Tpt Backsheet

White/Black Backsheet

OEM

Acceptable

Transport Package

2PCS/Carton, 30PCS/Pallet

Specification

1640*992*35mm

Trademark

Rosen Solar/OEM/ODM

Origin

China

HS Code

8541402000

Production Capacity

15000PCS/Week

Key features

25-Year Performance Warranty: Includes 25 years total workmanship warranty and 25 years for 80% linear power output.

High Efficiency Monocrystalline: Monocrystalline PERC technology with efficiency up to 19.2% for 300W models.

Comprehensive Certifications: Certified by TUV, CE, ISO, CB, VDE, IEC61215, and other international standards.

Durable Frame and Glass: Silver or black anodized aluminum alloy frame with 3.2mm tempered low iron glass.

IP67 Rated Junction Box: Waterproof and dustproof junction box ensures reliability in harsh environments.

OEM Service Available: Acceptable OEM customization for weight, cell type, and backsheet color.

Fast Production Lead Time: Average lead time within 15 workdays for both peak and off-peak seasons.

Global Export Experience: Exported to over 160 countries with 700MW annual production capacity since 2006.

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: ≤8.03hTerms 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.