What is the power efficiency?

The max power efficiency is greater than 90%.

What certifications does it have?

It is CE, RoHS, EMC, LVD, and SGS approved.

Can it be used in boats?

Yes, it is suitable for in-car or on-boat devices such as military vehicles, police cars, and ships.

300Watt Car Inverter DC 12V USB Modified Sine Wave Inverter

Name: 300Watt Car Inverter DC 12V USB Modified Sine Wave Inverter
Brand: Guangzhou Congsin Electronic Technology Co., Ltd
SKU: 815425725

Guangdong, ChinaGuangzhou Congsin Electronic Technology Co., Ltd

US$11.37

10-50 Pieces

US$11.00

51-99 Pieces

US$10.89

100+ Pieces

Product profile

Customization

Available

Warranty

1 year

Brand Name

Congsin

Model NO.

DXP300H

Output Power

300W

Output Type

Single

Output Voltage

DC10-15V

Weight

0.61kg

Certificate

CE EMC LVD

Multi Protection

Yes

Transport Package

1 Unit/Blister

Specification

126*95*55MM

Trademark

modified sine wave inverter

Origin

Duabgzhou Doxin Electronic Factory

HS Code

8504403090

Production Capacity

5000pieces/Month

Key features

100% Full Power Output: Delivers true 300W continuous power with peak load rate matching output capacity.

Advanced Soft-Start Tech: Gradual voltage ramp-up eliminates cold start failures and momentary shutdowns.

Comprehensive Protection: Includes low voltage, overload, over voltage, over thermal, and short circuit protection.

High Efficiency Design: Power efficiency exceeds 90% with THD under 3% for clean power output.

Durable Aluminum Case: Anodized aluminum housing ensures durability and maximum heat dissipation.

Built-in Cooling Fan: High-speed cooling fan maintains optimal operating temperature during use.

Multi-Certification Safety: CE, RoHS, EMC, LVD, and SGS approved for international safety standards.

Versatile Application: Suitable for cars, boats, offices, kitchens, and industrial equipment.

Company profile

Guangzhou Congsin Electronic Technology Co., Ltd

Guangdong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service AvailableExport Year: 2001-04-01 CertifiedNearest Port: Guangzhou Port, Shenzhen PortAverage Response Time: ≤24h CertifiedTerms of Payment: LC, T/T, PayPal, etc.

AI-Powered supplier vetting

SummaryGuangzhou Congsin Electronic Technology Co., Ltd is a China-based limited company established in 2021 with 54 employees and a 925 m² manufacturing site in Guangdong. It operates four production lines, has 11–20 quality-control staff, and produces power inverters, solar charge controllers, and related products. The supplier states that it exports to more than 40 countries and that exports represent 90% of total sales. It reports OEM/ODM capability, two years of R&D engineer experience, automatic wave soldering and multifunction testing equipment, and a one-year warranty for power inverters. However, no supplier-management-system certifications are listed. The provided information supports production, export, customization, and after-sales claims, while financial credibility and customer-case strength remain insufficiently evidenced. Reported output figures contain inconsistent entries, so production scale should be verified before reliance.

Supplier typeThe supplier is identified as Guangzhou Congsin Electronic Technology Co., Ltd., a China-based limited company established in 2021. It reports a 925 m² manufacturing plant, four production lines, and business activities spanning manufacturing, electrical and electronic products, and consumer electronics, supporting classification as a manufacturer rather than only a trading intermediary.

CertificationsThe supplier-management-system certification field is explicitly recorded as NIL. No certification evidence is provided in the available information, indicating a documented gap for this field.

After-Sales capabilityThe supplier explicitly describes itself as a reliable power-inverter supplier offering a one-year warranty. This is direct evidence of a defined warranty-based after-sales commitment, although no further service-process or response-time details are provided.

R&D capabilityThe supplier reports an R&D department, professional engineer support, OEM/ODM project capability, automatic wave soldering machines, and multifunction testing machines. However, only two years of total R&D engineer experience is stated, and no patents, proprietary technologies, or product-development results are provided.

Production capacityThe supplier reports four production lines, 11–20 quality-control staff, product-specific output information, and fulfillment within 15 working days in both off-peak and peak seasons. The output data contains inconsistent and unusually large entries, so production capacity is supported in principle but requires verification.

Customization capabilityThe supplier explicitly states that its R&D department supports OEM and ODM projects and that it has professional engineer support. Its stated export experience across more than 40 countries further indicates experience serving varied markets, although specific customization examples are not provided.

Product Q&A

Q:What is the warranty period?

One year warranty covers free repair for any raw materials or production process quality problems from the date of purchase.

Q:What is the input voltage range?

The input DC voltage range is DC10-15.5V, suitable for 12V systems.

Q:Does it support soft-start technology?

Yes, it features soft-start technology that gradually ramps up voltage to eliminate failed cold starts under load.

Q:What protections are built-in?

It includes Low Voltage Alarm, Low Voltage Shut Down, Over Load Protection, Over Voltage Shut Down, Over Thermal Protection, and Short Circuit Protection.

Q:Is OEM service available?

Yes, OEM service is available for this product.