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Off Grid UPS Inverter Solutions by Congsin

Off Grid UPS inverter Solutions for Reliable Energy Independence

Trusted Manufacturer with Proven Expertise

Congsin (Guangzhou Congsin Electronic Technology Co., Ltd.) has delivered professional power inverter solutions since 1998. With over 27 years of focused experience in DC→AC inverters, portable power stations and solar charge controllers, we design and manufacture dependable Off Grid UPS inverter systems that meet strict quality and safety standards.

Certified Quality and Advanced Production

Our production uses fully automated lines and multifunctional testing equipment to guarantee product reliability and intelligent functionality. Congsin is ISO9001 certified and many products comply with CE, EMC, LVD, ETL, FCC, RoHS and E-MARK. Independent patents reflect our commitment to innovation and durable Off Grid UPS inverter performance.

Features Tailored for Off‑Grid Applications

Designed for off-grid homes, RVs, trucks, patrol and field construction, our Off Grid UPS inverter range offers pure sine wave output, high conversion efficiency, surge capability, battery management and integrated solar charging. Intelligent protection (overload, short-circuit, over/under-voltage, temperature) ensures continuous power for critical loads.

Flexible OEM/ODM and Global Support

Congsin supports OEM/ODM, private labeling and bespoke customization to match partner specifications. We serve customers across Europe, the Americas, the Middle East, Africa and Southeast Asia, supplying more than 100+ models for vehicles, solar systems and portable power solutions that integrate easily into local installations.

Why Choose Our Off Grid UPS inverter?

Choose Congsin for energy independence: decades of expertise, rigorous testing, international approvals and a comprehensive product line. Our inverters deliver efficient, affordable and resilient backup power—backed by technical support and scalable options for residential, commercial and mobile projects.

Get Started with Congsin

Contact Congsin today to evaluate the right Off Grid UPS inverter for your project. Whether you need standard models or customized solutions, our team will guide specification, certification and deployment to ensure optimal system performance and long-term reliability.

Off Grid UPS inverter Display

FAQ:
What capacity battery is needed to meet long-term use?

It needs to be calculated according to the total power of the device, the formula is "Battery Capacity (Ah) = Total Device Power (W) × Usage Time (h) ÷ Input Voltage (12V)". For example, to drive a 1000W device for 5 hours, the required battery capacity = 1000×5÷12≈417Ah, it is recommended to use 2 200Ah batteries in parallel (total capacity 400Ah, actual usage about 4.8 hours).

Which types of batteries can it be used with?

It is suitable for common DC batteries such as 12V lead-acid batteries and lithium batteries. Please ensure the battery voltage matches the inverter's input voltage before use.

Does it only support DC12V input voltage?

The regular model has DC12V input, and other input voltages such as DC24V can be customized. Please consult customer service for details.

What is the working principle of the UPS function?

When the external power supply is normal, the inverter powers the device and charges the battery; when the external power supply is interrupted, it automatically switches to battery power to ensure uninterrupted operation of the device.

Can the 3 AC sockets drive high-power devices at the same time?

Yes, but it is necessary to ensure that the total power of the 3 devices does not exceed 2000W (continuous power). For example, it can drive 1 1000W electric oven + 1 500W microwave + 1 400W printer at the same time (total power 1900W), avoiding total power overload to trigger the protection mechanism.

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Contact Our Power Solution Experts

Provide your project details and requirements, and Congsin will deliver customized inverter, portable power, or solar controller solutions with full technical support.

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