How long is the lead time for production?

The average lead time is within 15 working days, regardless of the season.

What certifications does the product have?

The system is certified with CE and TUV for international safety compliance.

Is technical support provided for installation?

Yes, we provide installation manuals, training, and video guides to assist with setup.

Price Competitive 50kwh Bess for Utility Scale Battery Storage Companies

Name: Price Competitive 50kwh Bess for Utility Scale Battery Storage Companies
Brand: Rosen Solar Energy Co., Ltd.
SKU: 1915806021

Anhui, ChinaRosen Solar Energy Co., Ltd.

US$1.80

30-49 Kiowatt/Kiowatts

US$1.60

50-99 Kiowatt/Kiowatts

US$1.50

100-149 Kiowatt/Kiowatts

US$1.40

150+ Kiowatt/Kiowatts

Product profile

Customization

Available

After-sales Service

Yes

Warranty

25 Years

Model NO.

RS50KWH-ESS

Condition

New

Certification

CE, TUV

Application

Industrial, Commercial

Specification

Normal

Inverter

Hybrid Inverter with Automatic Switch

Battery

Gel/Lithium Battery with BMS

Material

Aluminum Alloy.Hot DIP Galvanized Steel etc

Solar Panel

Mono/Poly 158.75/166/182/210mm

Monitoring

WiFi/GPRS Device etc

PV Cable

6mm2/10mm2/25mm2/35mm2 etc

Mounting Brackets

Customized Roof/Ground Installation

Accessories

Mc-4 Spanner, Crimping Pliers etc

OEM/ODM

Acceptable

Technical Support

Installation Manual/Training/Video etc

Output Voltage

EU:230/240/380/400V Us:110/220/240VAC

Output Frequency

50/60Hz; ±5

Transport Package

Wooden Box, Carton on Pallets etc

Trademark

Rosen or OEM

Origin

China

HS Code

8543709990

Production Capacity

1000000 Set/Sets Per Week

Key features

25-Year Warranty Coverage: Comprehensive 25-year warranty for all mechanical and electrical components.

CE and TUV Certified: Meets international safety standards with CE and TUV certifications.

Customized Mounting Brackets: Roof and ground installation options tailored to specific site requirements.

Multiple Battery Options: Choice of Lithium, Gel, or OPzV batteries with integrated BMS protection.

Flexible Output Voltage: Supports EU (230/240/380/400V) and US (110/220/240V) voltage standards.

OEM and ODM Acceptance: Full OEM and ODM services available for custom branding and specifications.

Comprehensive Technical Support: Includes installation manuals, training, and video guidance for setup.

Rapid Lead Time: Production completed within 15 working days during both peak and off-peak seasons.

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: ≤8.78hTerms 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.