How long is your delivery time?

Sample order: 1-3 days after full payment is received. Stock order: 3-7 days after full payment is received. OEM order: 12-30 days after the deposit is received, ensuring that every order is meticulously crafted to meet your specifications.

What shipping methods do you offer, and how much does shipping cost?

We provide a plethora of shipping options, including DHL, UPS, EMS, FedEx, TNT, air freight, railway, and sea shipping. Shipping costs are contingent upon the destination country, but rest assured, we'll assist in pinpointing the most economical shipping method tailored to your needs.

Where do you ship from?

Our shipments originate directly from our state-of-the-art factory in China or from our strategically located warehouse in Germany, ensuring timely and efficient delivery.

What is the warranty period for your products?

Our Solar on/off-grid hybrid inverters come with a robust 5-year warranty, providing you with confidence in your investment and peace of mind for years to come.

Heavy-Duty 3kw Low Frequency Inverter with Toroidal Transformer Wholesale, OEM Available

Name: Heavy-Duty 3kw Low Frequency Inverter with Toroidal Transformer Wholesale, OEM Available
Brand: Shenzhen Lefu New Energy Co., Ltd.
SKU: 1977983231

Guangdong, ChinaShenzhen Lefu New Energy Co., Ltd.

US$158.00

1-9 Pieces

US$156.00

10-99 Pieces

US$151.00

100-299 Pieces

US$149.00

300+ Pieces

Sample price:US$158.00/piece.Request sample

Product profile

Customization

Available

After-sales Service

3years

Warranty

1.5 Years

Model NO.

LF3824

Nature of Source Flow

Active Inverter

Phase

Single

Output Power

>1000W

Certification

CE, ROHS, ISO9001, CCC

Type

DC/AC Inverters

Power Source

Solar Power

Circuit Topologies

Full-Bridge Type

Nature of Wave String

Sine Wave Inverter

Controller

MPPT

MPPT Operating Voltage Range (V)

60-150V

Rated Voltage

230V

Rated Frequency

50Hz/60Hz

Max Input Power

6400W

Battery Types

Lithium/Lead-Acid

Battery Voltage

48V

Comminication

RS485/Can/WiFi

Parallel Connections

WiFi

Yes

Gw

19.82

Transport Package

Cardboard

Specification

532*388*202mm

Trademark

None

Origin

China

HS Code

8504403090

Production Capacity

5000/Month

Key features

Exceptional Surge Power: Handles up to 15,000W surge to start heavy-duty appliances like ACs and pumps.

Pure Sine Wave Output: Delivers clean, stable power identical to utility electricity for sensitive electronics.

Low-Frequency Durability: Robust toroidal transformer design ensures superior reliability and long lifespan.

Versatile Charging System: Built-in AC charger compatible with solar systems for off-grid and remote sites.

Comprehensive Protection: Multi-layer safety against short circuits, overload, over-temperature, and reverse polarity.

OEM & ODM Services: Customizable solutions available to help build your own brand.

Wide Battery Compatibility: Supports Lithium, Lead-Acid, Gel, and Water batteries with various voltages.

Smart MPPT Controller: Efficient solar charging with MPPT voltage ranges up to 150V and RS485/WiFi communication.

Company profile

Shenzhen Lefu New Energy Co., Ltd.Guangdong, China

Business Type: Manufacturer/FactoryExport Year: 2016-01-01Nearest Port: Shenzhen, GuangzhouAverage Response Time: ≤2.65hTerms of Payment: T/T, Western UnionInternational Commercial Terms(Incoterms): FOB, EXW, CFR, CIF, DAT, FAS, DDP, DAP, CIP, CPT, Others, FCA

AI-Powered supplier vetting

SummaryShenzhen Lefu New Energy Co., Ltd. is identified as a Chinese manufacturer/factory producing solar inverters, energy storage batteries and related systems. The supplier reports ISO 9001 and EICC certifications, four production lines, 6–10 R&D engineers, and 6–10 quality-control staff. It states that 90% of sales are exports, with exporting activity since 2016 and coverage of Asia, Africa, and Latin America. The company describes tailored design solutions, 24/7 technical support, and after-sales service, but the available evidence does not independently verify these claims. The information supports positive assessments for supplier type, certifications, production capability, innovation resources, and customization claims. Financial credibility and customer cases cannot be conclusively assessed from the provided slices.

Supplier typeThe supplier is explicitly classified as a Manufacturer/Factory and is registered as a limited company in China. This directly supports its identification as a manufacturing supplier rather than only a trading intermediary.

CertificationsThe supplier states that it has a robust certification system and explicitly lists ISO 9001 and EICC management-system certifications. These stated certifications provide direct evidence of formal quality and responsible-business management systems, although the slices do not include certificate numbers, validity dates, or issuing bodies.

After-Sales capabilityThe company states that it provides 24/7 technical support and a seamless after-sales experience. This is explicit evidence of a claimed support capability, but no service-team size, response-time records, service locations, or customer verification is provided.

R&D capabilityThe supplier states that it focuses on technological innovation and offers products including solar inverters, LiFePO4 batteries, energy storage systems, and related accessories. It also reports 6–10 R&D engineers, which supports an established R&D resource, although no patents, specific technical achievements, or independently verified innovation results are provided.

Production capacityThe company is identified as a manufacturer/factory and reports four production lines, 6–10 quality-control staff, and 6–10 R&D engineers. These figures provide direct evidence of organized production and quality resources, though the slices do not state facility capacity, utilization, or lead times.

Customization capabilityThe supplier explicitly states that its expert team provides tailored design solutions for home and industrial energy storage systems. This supports a claimed ability to customize solutions, but no examples, configuration limits, engineering process, or completed customization cases are provided.

Product Q&A

Q:What are your main products?

Our flagship offerings encompass a comprehensive range of solar energy systems, including cutting-edge solar inverters, robust energy storage batteries, and advanced energy management systems, each designed to harness the sun's power with unparalleled efficiency.

Q:Do you accept OEM or ODM services?

Yes, we proudly offer both OEM and ODM services, allowing you to tailor solutions to your unique requirements with remarkable flexibility.

Q:Can I install the solar energy system myself?

For your safety and peace of mind, we emphatically recommend engaging a professional installer or certified electrician. Additionally, it's prudent to account for potential installation costs to ensure a smooth setup.

Q:What certifications do your products have?

Our products boast an impressive array of certifications, including EN50549-1, IEC 62109-1&-2, IEC 61000-6-1&-3, VDE4105, CEI 0-21, G98&G99, UTE C15-712-120107, and more, underscoring our commitment to quality and safety.

Q:What are your delivery terms?

We accommodate a variety of delivery terms, including EXW, FOB, CFR, and CIF, providing you with versatile options tailored to your logistical needs.