4000VA 4 IN 1 UPS Inverter With Charger DC12V To AC220V Modified Sine Wave Power Inverter Charger

The STW-4000C is a multi-functional 4-in-1 UPS modified sine wave power inverter that combines battery charging, inversion, and uninterruptible power transfer in one compact unit. It converts 12V DC battery energy into 220V AC output. When grid power cuts off, it switches over instantly to supply power to your home appliances — an ideal solution for regions with unstable electricity supply.

• Modified sine wave output — reliable and cost-effective for household backup scenarios.
• Three-stage intelligent charging logic automatically stops charging once the battery is fully charged.
• Clear LCD display for real-time monitoring of battery voltage, charging status, and output voltage.
• Ultra-fast UPS transfer: Mains to Inverter <18ms, Inverter to Mains <8ms.
• Comprehensive safeguards: undervoltage, overvoltage, overload, short-circuit, overtemperature, and reverse polarity protection.
• Extra 5V 2.5A USB outlet for charging mobile phones and small digital gadgets.
• Conversion efficiency ≥84%, compatible with 12V lead-acid batteries including AGM, GEL, and SLA types.
• Universal AC sockets for easy connection of various domestic electrical loads.

As a leading manufacturer with extensive experience in the solar photovoltaic industry, our company specializes in producing high-quality equipment such as solar inverters, AGM/GEL battery charging systems, and advanced charge controllers. Choosing Sunchonglic-branded products guarantees reliable and efficient performance for your energy needs.

Our products are widely recognized and trusted by our clients and can meet continuously changing economic and social needs.

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