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Professional supplier of power supply products

Our Service

At Congsin, we are committed to providing exceptional service backed by advanced technology and rigorous quality standards, ensuring reliable and efficient power solutions tailored to your needs.

◼ Design & R&D

Design & R&D Services

Congsin is a global manufacturer specializing in DC-to-AC power solutions, focusing on power inverters, battery energy storage systems, and solar controllers. Our products are widely used in outdoor camping, RVs, small home systems, emergency backup power, and commercial energ

 

Our capabilities include inverter topology design, thermal management engineering, EMC optimization, battery system compatibility, and firmware algorithm development. Through structured evaluation and rapid prototyping, we ensure every customized solution achieves optimal performance, reliability, and compliance with international standards.

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Customization - Congsin

◼ OEM/ODM Customization

OEM & ODM Services

Guangzhou Congxin Electronics Technology Co., Ltd. offers comprehensive OEM and ODM services, catering to diverse customer needs with customized power supply solutions. Leveraging advanced research and development capabilities, state-of-the-art production facilities, and stringent quality management, we collaborate closely with clients to design, develop, and manufacture tailored products.

 

Our expertise in vehicle inverters, solar controllers, battery chargers, and step-down converters enables us to provide innovative, high-quality, and environmentally friendly solutions that meet international standards and specific market demands.

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ODM SERVICES - Congsin

◼ Quality & Reliability Testing

Quality & Reliability Testing Services

At Congsin, quality assurance is integrated into every stage of development and production. With precision testing instruments and a multi-level verification system, we ensure each inverter meets strict performance, safety, and durability standards required for global markets.

 

Our testing covers electrical safety validation, efficiency assessment, environmental and thermal robustness, EMC/EMI testing, and long-duration reliability evaluation. By implementing rigorous quality control from material sourcing to final inspection, we guarantee stable performance under various load and environmental conditions, ensuring product reliability throughout its lifecycle.

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System Upgrades and Optimization - Congsin

◼ After-sales Support & System Optimization

Support & Optimization

At Congsin, We delivers comprehensive after-sales support and system optimization services to ensure long-term product performance and customer satisfaction. Our technical team provides 24/7 assistance, remote diagnostics, firmware updates, installation guidance, and compatibility checks for diverse application scenarios..

 

Through continuous optimization—covering conversion efficiency, cooling performance, load response, and intelligent protection—we help enhance system stability, reduce energy loss, and extend equipment lifespan. With proactive maintenance and upgrade solutions, we support customers in achieving reliable and sustainable operation across residential, commercial, and industrial environments.

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After-sales Support - Congsin

◼ Why choose us

Congsin's Service Advantages

At Congsin, we pride ourselves on delivering superior products and exceptional customer service supported by cutting-edge technology and rigorous quality standards.
Advanced Research and Development - Congsin
Advanced Research and Development
Our dedicated R&D team continually innovates to provide over 100 models of power supply products, including vehicle inverters, solar controllers, and battery chargers. This ensures we meet diverse customer requirements with the latest technology and intelligent features.
Automated Precision Manufacturing - Congsin
Automated Precision Manufacturing
We utilize fully automated production lines complemented by multifunctional testing equipment and advanced instrumentation. This integrated manufacturing process guarantees high product efficiency, consistency, and comprehensive testing for optimal performance.
Strict Quality Assurance - Congsin
Strict Quality Assurance
Holding ISO9001:2000 international quality system certification and multiple global product certifications such as CE, EMC, LVD, ETL, ROHS, and E-MARK, Congsin maintains stringent quality management to ensure reliable and safe products that comply with international standards.
Environmentally Responsible Solutions - Congsin
Environmentally Responsible Solutions
Our products are designed following the EU ROHS environmental directive, emphasizing eco-friendly energy savings and sustainability, which are increasingly important in today’s global market.
Global Market Reach and OEM Experience - Congsin
Global Market Reach and OEM Experience
With primary exports to developed regions like the Americas and Europe, and participation in both domestic and international OEM markets, Congsin has established a strong global presence and earned widespread consumer trust.
Versatile Product Applications - Congsin
Versatile Product Applications
Our power supply products are highly adaptable, widely used across various scenarios including vehicles, residential homes, outdoor offices, tourism, patrols, and field construction, offering reliable power solutions wherever needed.

◼ Service Support

Congsin offers one-stop service support

We provide technical assistance for installation, operation, and maintenance of our power supply products, backed by extensive experience and adherence to international quality standards. 

Customization - Congsin

Design and R&D

We have a team of experienced engineers, with all products and software designed and developed in-house. We possess core technological advantages and can support a wide range of customized requirements.

ODM and Custom Inverter Solutions - Congsin

ODM and Custom Inverter Solutions

Photovoltaic inverters undergo rigorous safety and performance testing, including overload protection, voltage detection, and temperature regulation, ensuring stable and reliable operation in diverse environments.

Test for Reliability and Safety - Congsin

Test for Reliability and Safety

Congsin provides reliable off-grid solar and microgrid system solutions designed for energy independence and sustainability in remote and decentralized locations.
Calibration and Quality Control - Congsin

Calibration and Quality Control

All inverter parameters are calibrated to ensure output performance meets customer requirements. Products undergo aging tests and multiple production and factory inspections to guarantee high-quality delivery.

Support and Maintenance - Congsin

Support and Maintenance

We provide comprehensive after-sales technical support, offering rapid response for remote diagnostics or on-site commissioning to ensure the efficient operation of photovoltaic systems.

System Upgrades and Optimization - Congsin

System Upgrades and Optimization

Beyond routine maintenance, we offer periodic system inspections and optimization services. By leveraging the latest technologies, we enhance system efficiency, reduce operational costs, and ensure inverters remain in peak condition.

◼ Hot Products

Explore our latest Power Supply products

Modified Sine Wave Inverters
Pure Sine Wave Inverters
Portable Power Stations / Energy Storage Systems
Solar Charge Controller
1000W 1500W 2000W UPS POWER INVERTER WITH CHARGER 10A 15A 20A DC TO AC 12v24v 110v 220V
1000W 1500W 2000W UPS POWER INVERTER WITH CHARGER 10A 15A 20A DC TO AC 12v24v 110v 220V
1500W Modified Sine Wave Inverter, DC 12V to AC 220V Power Inverter with LED Display, 3 USB Ports, 1 Type-C, 1 DC 12V Output & Two Universal Sockets

Our CS1000DDBC 1000W modified sine wave inverter is a professional power conversion device that converts DC 12V from batteries into AC 220V electricity. It is designed with user convenience in mind, featuring an LED display for real-time status monitoring, multiple charging ports (3 USB, 1 Type-C, 1 DC 12V) and two universal sockets to power a wide range of devices simultaneously. Its compact size (250×95×55mm) and lightweight design (NW: 0.84kg) make it easy to carry, ideal for outdoor activities, emergency home use, and on-the-go power needs.

1500W Modified Sine Wave Inverter, DC 12V to AC 220V Power Inverter with LED Display, 3 USB Ports, 1 Type-C, 1 DC 12V Output & Two Universal Sockets
Dual Input Modified Sine Wave Car Inverter DC12V/24V to AC220V Multi-interface Power Converter 150W

This 150W modified sine wave car inverter supports dual DC12V/24V input and AC220V output. It is equipped with a Type-C port, two 3.1A USB ports, and a national standard socket. It is compact and portable, providing stable AC power conversion in various scenarios such as in the car, meeting the power supply needs of mobile phones, tablets, small home appliances and other devices.

Dual Input Modified Sine Wave Car Inverter DC12V/24V to AC220V Multi-interface Power Converter 150W
1000W Modified Sine Wave Inverter with UPS Charger DC12V to AC220V 600W Rated Power Dual Universal Socket Inverter

This 1000W modified sine wave inverter has UPS charging function, with DC12V input and AC220V output, and 600W rated power. Equipped with dual universal sockets, two USB ports, an LCD display, and a battery clip, it is professionally designed and has stable performance. It can provide stable AC power conversion and UPS emergency power supply for computers, small home appliances, electronic devices, etc. in home emergency, office, outdoor and other scenarios, meeting the needs of simultaneous power supply and emergency power supply for multiple devices.

1000W Modified Sine Wave Inverter with UPS Charger DC12V to AC220V 600W Rated Power Dual Universal Socket Inverter
300W Modified Sine Wave Inverter DC12V to AC220V 4 USB Ports Dual Universal Sockets Inverter with LCD Display (with Cigarette Lighter, Battery Clip)

This 300W modified sine wave inverter has DC12V input and AC220V output, with a rated power of 300W. Equipped with 4 USB ports, two universal sockets, an LCD display, as well as 1 cigarette lighter port and a battery clip, it is rich and practical in design. It can provide stable AC power conversion for mobile phones, tablets, small home appliances, vehicle-mounted devices, etc. in vehicle, outdoor, home emergency and other scenarios, meeting the diverse needs of simultaneous power supply for multiple devices.

300W Modified Sine Wave Inverter DC12V to AC220V 4 USB Ports Dual Universal Sockets Inverter with LCD Display (with Cigarette Lighter, Battery Clip)
500W Modified Sine Wave Inverter (Rated 360W) DC12V to AC220V 4 USB Ports (6.8A) Dual LED Display Inverter with Reverse Protection

This 500W modified sine wave inverter has a rated power of 360W, with DC12V input and AC220V output. Equipped with 4 USB ports (total current 6.8A), a universal socket, dual LED displays, a reverse protection function, and a battery clip, it is thoughtfully designed and has stable performance. It can provide stable AC power conversion for mobile phones, tablets, small home appliances and other devices in vehicle, outdoor, home and other scenarios, meeting your need for simultaneous power supply of multiple devices.

500W Modified Sine Wave Inverter (Rated 360W) DC12V to AC220V 4 USB Ports (6.8A) Dual LED Display Inverter with Reverse Protection
500W Modified Sine Wave Inverter (Rated 360W Peak 720W) DC12V to AC220V Inverter with LED Display Universal Socket

This 500W modified sine wave inverter has a rated power of 360W and a peak power of 720W, with DC12V input and AC220V output. Equipped with 1 USB port, universal socket, LED display, external fuse design, and battery clip, it has an exquisite appearance and stable performance. It can provide reliable AC power conversion for mobile phones, small home appliances, electronic devices, etc. in scenarios such as vehicle, outdoor, and home emergency, meeting the power needs of various devices.

500W Modified Sine Wave Inverter (Rated 360W Peak 720W) DC12V to AC220V Inverter with LED Display Universal Socket
Patent Model 2000W Modified Sine Wave Inverter DC12V to AC220V Multi-interface Independent Control Power Converter

This 2000W full-power modified sine wave inverter is a patented model of our factory, with DC12V input and AC220V output. Equipped with an LED display, three AC output sockets, four USB ports, and independent control switches for DC and AC, it can provide stable power conversion for high-power devices and various electronic devices in multiple scenarios, meeting the power needs of home emergencies, outdoor operations, small commercial equipment and other scenarios.

Patent Model 2000W Modified Sine Wave Inverter DC12V to AC220V Multi-interface Independent Control Power Converter
1500W Pure Sine Wave Inverter with Remote Control Function

This 1500W pure sine wave inverter converts DC 12V to AC 220V power, with a rated power of 1500W and a peak power of 3000W. Equipped with dual fans, LCD display, QC3.0 and PD Type-C fast charging ports, and remote control capability for stable and intelligent power output.

1500W Pure Sine Wave Inverter with Remote Control Function
3000W Full-Power Pure Sine Wave Inverter (Labeled 6000W), DC 12V to AC 220V Power Converter, Suitable for High-Power Devices

This pure sine wave inverter (Model: CS3000PSW-L6000) features "3000W full continuous power output + labeled 6000W peak power." Adopting pure sine wave output technology (waveform distortion rate <2%), its power quality is close to mains power, which can safely drive high-power precision devices such as air conditioners, refrigerators, electric tools, and medical instruments, avoiding equipment malfunctions caused by unstable waveforms. The device supports DC 12V input (compatible with 10.5V-14.8V wide voltage): 3000W continuous power meets long-term stable power supply, and 6000W peak power easily copes with the instantaneous startup impact of devices. Equipped with 4 AC universal sockets (16A) and 2 USB 3.0 fast-charging ports (22.5W/port), it can supply power to 6 devices simultaneously. Built-in six-fold protection (overload, overvoltage, undervoltage, short circuit, overtemperature, and reverse connection), combined with dual intelligent silent cooling fans (noise ≤45dB), balances high-power performance and safety, making it suitable for home emergencies, outdoor engineering, vehicle-mounted power supplies, small commercial and other scenarios.

3000W Full-Power Pure Sine Wave Inverter (Labeled 6000W), DC 12V to AC 220V Power Converter, Suitable for High-Power Devices
3000W Full-Power Pure Sine Wave Inverter, DC 12V to AC 220V Power Converter, Suitable for High-Power Precision Devices

This 3000W full-power pure sine wave inverter (Model: CS3000PSW) adopts pure sine wave output technology (waveform distortion rate <2%), and the output power is highly consistent with mains power quality. It can safely drive high-power precision loads such as air conditioners, refrigerators, medical instruments, and small industrial equipment, avoiding equipment malfunctions or shortened service life caused by unstable waveforms. The device supports DC 12V input (compatible with 10.5V-14.8V wide voltage), continuously outputs 3000W full power, and has a peak power of 6000W, easily coping with the instantaneous startup impact of high-power devices; it is equipped with 4 AC universal sockets (max current 16A) + 2 USB 3.0 fast-charging ports (22.5W per port) to meet the simultaneous power supply needs of multiple devices. Built-in six-fold safety protection (overload, overvoltage, undervoltage, short circuit, overtemperature, reverse connection), combined with dual intelligent silent cooling fans (noise ≤45dB), it achieves the triple advantages of "high power + high safety + low noise," suitable for home emergency, outdoor engineering, vehicle-mounted power supply, small industrial scenarios and other fields.

3000W Full-Power Pure Sine Wave Inverter, DC 12V to AC 220V Power Converter, Suitable for High-Power Precision Devices
2000W Full-Power Pure Sine Wave Inverter, DC 12V to AC 220V Power Converter, Equipped with 3 AC Universal Sockets

This 2000W full-power pure sine wave inverter (Model: CS2000PSW-3S) adopts pure sine wave output technology (waveform distortion rate <3%), and the output power is close to mains power quality, which can safely drive precision electronic devices such as computers, inverter air conditioners, medical instruments, and audio equipment, avoiding equipment malfunctions or damage caused by unstable waveforms. The device supports DC 12V input (compatible with 10.5V-14.8V wide voltage), continuously outputs 2000W full power, and has a peak power of 4000W, easily meeting the instantaneous startup needs of high-power devices; it is core-equipped with 3 AC universal sockets (max current 16A), which can supply power to multiple home appliances or devices at the same time, and is matched with 2 USB 3.0 fast-charging ports (22.5W per port), balancing high-power supply and digital product charging. Built-in five-fold safety protection (overload, overvoltage, undervoltage, short circuit, and overtemperature), combined with dual silent cooling fans (noise ≤42dB), it achieves both safety and stability, suitable for home emergencies, outdoor operations, vehicle-mounted power supplies, small commercial and other scenarios.

2000W Full-Power Pure Sine Wave Inverter, DC 12V to AC 220V Power Converter, Equipped with 3 AC Universal Sockets
1000W Full-Power Pure Sine Wave Inverter, DC 12V to AC 220V Power Converter, Suitable for Precision Electronic Devices

This 1000W full-power pure sine wave inverter (Model: CS1000PSW) adopts pure sine wave output technology, with a stable waveform close to mains power, which can be safely adapted to precision electronic devices such as computers, projectors, medical instruments, and inverter home appliances to avoid device damage or malfunctions. The device supports DC 12V input (compatible with 10.8V-14.5V wide voltage), continuously outputs 1000W power, and has a peak power of 2000W, meeting the power needs of most household and small commercial devices. Equipped with 2 AC universal sockets, 2 USB 2.0 fast-charging ports (18W per port), built-in five-fold protection (overload, overvoltage, undervoltage, short circuit, overtemperature), and a silent cooling fan, it balances safety and portability, suitable for home emergencies, outdoor camping, vehicle-mounted power supplies, small office and other scenarios.

1000W Full-Power Pure Sine Wave Inverter, DC 12V to AC 220V Power Converter, Suitable for Precision Electronic Devices

◼ Latest Updates

The Latest News of Congsin

Stay updated with the latest developments, product launches, and industry insights from Congsin.

How to Choose the Right Solar Panel System for Your Home?
Jan 09, 2026

This 2025 guide helps homeowners select the best solar panel system by evaluating N-Type TOPCon efficiency, smart energy management (SEMS), and Vehicle-to-Home (V2H) readiness. Learn to calculate real energy demand, compare top inverter brands, and maximize ROI with the 30% Federal Tax Credit.

09
Jan
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Best Power Inverter for Car: 2026 Buyer's Guide for Fast Charging & Reliability
Jan 09, 2026

A comprehensive 2026 buyer's guide for car power inverters. Discover why experts recommend Pure Sine Wave and GaN technology for safely powering laptops, Starlinks, and appliances on the road.

09
Jan
Best Power Inverter for Car: 2026 Buyer's Guide for Fast Charging & Reliability
Why Is Inverter Demand So High in Ukraine?
Jan 07, 2026
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Why Is Inverter Demand So High in Ukraine?
Global Solar Inverter Demand Hotspots (2024-2026): Which Regions Are Driving Growth?
Jan 07, 2026
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Global Solar Inverter Demand Hotspots (2024-2026): Which Regions Are Driving Growth?

Frequently Asked Questions

Still have questions?

Delve into our list of frequently asked questions about stage effects equipment. Here, we address and clarify your top concerns.

More Answers
Pure Sine Wave Inverters
Does it have a charging (UPS) function?

No, this model is a pure inverter without UPS function.

What is the difference between a pure sine wave inverter and a modified sine wave inverter?

Pure sine wave inverter has an output waveform close to mains power with low distortion rate (<3%), which can be safely adapted to precision devices such as computers, medical instruments, and inverter home appliances; modified sine wave inverter has a notched waveform, which easily causes device heating, malfunction or damage, and is only suitable for simple devices such as bulbs and fans.

Will reversing the positive and negative poles damage the device when connecting the battery?

The device has a built-in reverse connection protection function, which will automatically cut off the circuit when the positive and negative poles are reversed to avoid damage caused by reverse current inflow; just adjust the connection order of the positive and negative poles of the battery clip and re-power on to use normally.

Modified Sine Wave Inverters
Can I customize the color and logo?

Yes, OEM/ODM customization is supported.

Can it be used in electric vehicles?

Most electric vehicles have a high-voltage system, and this inverter inputs DC 12V. It is not recommended to use it directly. If you need to use it, please confirm whether the vehicle power output matches first.

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