Congsin 500W Modified Sine Inverter with 4 USB — Reliable Portable Power
Reliable 500W Modified Sine Inverter with 4 USB
The Congsin 500W modified sine inverter with 4 USB ports provides dependable DC→AC power wherever you need it. Designed for vehicle, RV, truck and light off-grid use, this compact inverter lets you run small appliances, charge phones and power accessories with easy plug-and-play convenience.
Practical value for everyday use
With 500W continuous output and multiple USB outlets, you can charge smartphones, tablets, laptops and run small devices like fans, LED lamps or portable tools. The integrated 4 USB ports reduce the need for extra adapters, making it ideal for camping, road trips, field work or emergency backup.
Safety and reliability you can trust
Built by Guangzhou Congsin Electronic Technology Co., Ltd., a manufacturer with over 27 years of focused experience, this inverter benefits from mature production, automated testing and quality control. Congsin products follow ISO9001 procedures and many models meet international approvals such as CE, EMC, LVD, ETL, FCC and RoHS. Built-in protections include overload, short-circuit, over-temperature and low-battery shutdown to protect your devices and vehicle battery.
Key features
- 500W continuous modified sine wave output for efficient DC→AC conversion- 4 USB ports for simultaneous device charging- Compact, lightweight design for easy installation- Multiple protections: overload, short, thermal, low-voltage- Compatible with cars, RVs, trucks, solar systems and portable setups- OEM/ODM and private-label options from an experienced manufacturer
Why choose Congsin?
Congsin combines decades of inverter R&D with automated production and patented innovations. Our focus on durability, affordability and scalable customization means you get a product that fits real-world needs and global safety standards. Whether you are outfitting a vehicle, building a portable power kit, or sourcing OEM units, the 500W modified sine inverter with 4 USB is a practical, cost-effective choice.
Order now or contact our sales team for customized labeling and distribution options. Congsin supports global markets across Europe, the Americas, the Middle East, Africa and Southeast Asia.
Product Images
Certificate display
ROSH -Certificate Number - TST20220503108-3RC
CE Certificate Number - TST20220680033-1S0
FC Certifcate Number - TST20220503108-45C
Q&A
What happens if the positive and negative poles are reversed when connecting the battery?
The device features built-in reverse polarity protection. If the positive and negative terminals are connected incorrectly, the circuit will automatically disconnect to prevent damage to the equipment. Simply adjust the battery clip connections (red clip to positive terminal, black clip to negative terminal), then restore power to resume normal operation.
What is the difference between modified sine wave and pure sine wave?
Modified sine wave is suitable for most ordinary home appliances and electronic devices; pure sine wave is suitable for devices with extremely high power requirements (such as precision instruments). This modified sine wave is more cost-effective and meets the needs of most daily scenarios.
What is the reason for the inverter automatically shutting down during operation?
It is likely that the protection mechanism is triggered: 1. Load overload (total power of connected devices exceeds 1000W); 2. Abnormal input voltage (battery voltage <10.8V or >14.5V); 3. Device overtemperature (excessively high ambient temperature or cooling fan failure). It is recommended to disconnect some loads, check the battery voltage or clean the heat dissipation port before trying again.
Which region’s voltage standards does it support?
It defaults to AC 220V output, suitable for regions with 220V voltage standards such as China and Europe; it can also be customized to output AC 110V, suitable for regions with 110V voltage standards such as the United States and Japan.
Congsin 500W modified sine wave power inverter US sockets 4 USB ports LCD display off grid
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