Can you do OEM or ODM service?

Yes, we have an R&D department and accept OEM and ODM service.

How about a warranty?

12 MONTH warranty, technical support available, we always try our best to help customers solve problems

Efficient Conversion 3kw 3.5kw 4.2kw off Grid Hybrid Type Solar Controller Inverter

Name: Efficient Conversion 3kw 3.5kw 4.2kw off Grid Hybrid Type Solar Controller Inverter
Brand: Nanjing Oulu Electric Corp., Ltd.
SKU: 1975253801

Jiangsu, ChinaNanjing Oulu Electric Corp., Ltd.

US$162.00

1-99 Pieces

US$148.00

100+ Pieces

Product profile

Customization

Available

Nature of Source Flow

Active Inverter

Phase

Single

Model NO.

OLU3524VMII

Output Power

>1000W

Certification

CE, ISO9001, CCC

Type

DC/AC Inverters

Power Source

Solar Power

Circuit Topologies

Full-Bridge Type

Nature of Wave String

Sine Wave Inverter

Product Name

Hybrid Inverter

Keywords

Solar Inverter

AC Output Conversion Efficiency

93%

AC Output Wave

Pure Sine Wave

Battery Input Battery Voltage

24VDC

Battery Input Float Voltage

27VDC

Battery Input Overvoltage Protection

33VDC

Solar Charger MPPT Voltage Range

60~450VDC

Solar Charger Max. Input Voltage

500VDC

Solar Charger Max. Input/Charge Current

18A/80A

AC Input Voltage

230VAC

General Data Weight

9kg

Packaging Size

420×315×145mm

Protection Level

IP20

Storage Temperature

-30℃ ~+70℃

Transport Package

Carton

Specification

Standard Specifications or Customized

Trademark

OULU

Origin

Jiangsu, China

HS Code

8504403090

Production Capacity

50000PCS/Year

Key features

High Conversion Efficiency: Peak conversion efficiency reaches 93%, minimizing energy loss and maximizing system output.

Pure Sine Wave Output: Delivers clean power with pure sine wave for safe operation of sensitive electronic devices.

Fast Switchover Time: Switches between grid and battery power in 10ms (PC) or 20ms (Home) for seamless backup.

Wide MPPT Voltage Range: Supports 60-450VDC input range, compatible with various solar panel configurations.

Dual Operation Modes: Supports both grid-connected and standalone operation for versatile installation options.

Comprehensive Safety Protection: Includes voltage, current, and temperature safeguards to protect equipment from damage.

OEM and ODM Services: Accepts full customization, minor customization, and design-based customization with R&D support.

Adaptive Frequency Support: Automatically adapts to 50Hz or 60Hz frequency for global compatibility.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceCooperated with Fortune 500Years of Export Experience

Nanjing Oulu Electric Corp., Ltd.

Jiangsu, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 18 Years CertifiedNearest Port: Shanghai PortAverage Response Time: ≤8.45h

AI-Powered supplier vetting

SummaryThe supplier is identified as a factory engaged in research and development, production, sales, installation, and technical services for electric vehicles, accessories, lighting systems, and related equipment. It reports CE product certification and ISO9001:2015, ISO14001, and ISO45001:2018 management-system certifications. Evidence indicates broad customization, ODM/OEM services, SDK availability, recent new-product development, and extensive assembly and testing facilities. The supplier has exported for 18 years, reports peak- and off-season lead times within 15 working days, and maintains documented quality and supplier-management procedures. Its overseas service infrastructure is limited: it reports no overseas warehouses, showrooms, agents, or branches, and serves zero overseas countries, although debugging is offered and offline trade-show participation is documented. Financial records are referenced for 2022–2024, but the provided slices do not include financial results or metrics.

Supplier typeThe supplier is explicitly identified as a factory. Its stated business scope includes R&D, production, sales, technical services, engineering design and construction, equipment installation, and import/export activities.

CertificationsThe supplier reports CE product compliance certification and ISO9001:2015, ISO14001, and ISO45001:2018 management-system certifications. These certifications provide explicit evidence of product and management-system compliance coverage.

After-Sales capabilityThe supplier lists debugging as an overseas service and has participated in the Shanghai New Energy Exhibition and Conference. However, it reports zero countries served overseas and no overseas warehouse, showroom, agent, or branch, indicating limited documented overseas service infrastructure.

R&D capabilityThe supplier reports new products within the past year, ODM services, available SDK support, and one national science and technology progress award. These are explicit indicators of product-development and technical innovation capability.

Production capacityThe supplier reports multiple dedicated production and testing facilities, including battery assembly and welding, OCV and aging testing, inverter assembly, wind-turbine assembly, and painting lines. It also reports documented finished-product inspection, 30 qualified service-capability suppliers, and lead times within 15 working days in both seasons.

Customization capabilityThe supplier explicitly offers customization from samples and designs, minor and full customization, and flexible customization. It also reports both ODM and OEM services, supporting a broad customization offering.

Client casesThe supplier reports OEM service for well-known brands and collaboration with Fortune 500 companies. These statements provide explicit customer-experience evidence, although no customer names, project details, or performance outcomes are provided.