Which Chinese suppliers offer hybrid inverters with RS485 communication? 

1. Why Is RS485 Becoming a Must-Have for Hybrid Inverters?

In recent years, as photovoltaic energy storage systems gain traction, one question has become almost universal in hybrid inverter inquiries: "Does this unit come with an RS485 communication port?"

Whether for system integration, engineering procurement, or private label distribution, RS485 has quickly become a non-negotiable selection criterion. With this question surfacing in nearly every project discussion, buyers are increasingly in need of a reliable reference list of Chinese suppliers offering hybrid inverters with RS485 communication.

To that end, we have compiled a shortlist of representative Chinese manufacturers across different scales to facilitate your evaluation process.

Before presenting the list, however, it is worth briefly examining why RS485 has risen to such prominence in the industry — a clearer understanding of its role will help you better assess the offerings of different suppliers and make a more informed sourcing decision.

2. Why RS485 Has Become a Selection Hot Topic

Before we get to the list, let's briefly explain what RS485 is.

RS485 is a serial communication standard widely used in industrial and energy applications. Simply put, it allows different electronic devices to exchange data with each other over long distances — up to 1,200 meters — with strong resistance to electrical interference. That makes it particularly suitable for solar energy systems, where components like inverters, batteries, and monitoring devices are often installed far apart.

So why has RS485 become so critical in hybrid inverters?

Its most important role is BMS (Battery Management System) communication. The RS485 inverter reads battery voltage, current, temperature, and state of charge through RS485, then adjusts charging and discharging in real time to keep the battery running safely and efficiently. Beyond that, RS485 also enables remote monitoring and allows multiple inverters to run in parallel via coordinated communication over a shared bus.

This isn't a new trend — it's a necessity. As lithium batteries replace lead-acid as the industry standard, BMS and inverter RS485 ports must communicate seamlessly. And RS485 is currently the most widely supported protocol for lithium battery BMS. Without an inverter RS485 port, the unit won't work properly with most lithium batteries, and monitoring or system integration becomes difficult.

So RS485 communication isn't a bonus feature — it's a basic requirement for modern hybrid inverters. That's why all the Chinese suppliers listed below offer it as either standard or a key option.

3. Overview of Major Chinese RS485 Hybrid Inverter Suppliers

The following five Chinese suppliers of hybrid inverters all offer products with RS485 communication, covering different scales to help you compare based on your positioning and needs:

Huawei and GoodWe, as industry leaders, have clear advantages in technology and brand recognition, but mainly serve the branded market with relatively high customization barriers – suitable for large-volume procurement where brand endorsement matters. In contrast, Chinese suppliers like Xindun Power and First Tech, being medium or smaller in scale, often offer greater flexibility in OEM/ODM customization, lead time coordination, and responsive service – making them a better fit for buyers with special requirements or private label needs.

Among these Chinese suppliers, we’d naturally like to highlight Xindun Power’s products and services in more detail – after all, this is the area we know best.

4. Xindun Power – Professional RS485 Hybrid Inverter OEM/ODM Manufacturer

Guangdong Xindun Power Technology Co., Ltd. was established in 2006 and is headquartered in Chancheng District, Foshan, Guangdong, with its own manufacturing facility in the European Industrial Park. As one of the reliable Chinese suppliers in the power supply industry, the company is an integrated R&D, manufacturing, and sales enterprise specializing in power supply products, including hybrid inverters, off-grid inverters, grid-tied inverters, PV all-in-one units, UPS power supplies, and energy storage batteries. Products are exported to over 60 countries and regions worldwide.

Xindun Power provides professional OEM/ODM services to global customers. The company holds ISO9001 quality management system certification, and its products carry CE and IEC international certifications, meeting export standards for European and other international markets.

Xindun Power currently offers multiple hybrid inverter series with RS485 communication support. Below is an overview of our main product lines — all equipped with or configurable for RS485 connectivity.

(1) HFP Series

High-frequency pure sine wave output with conversion efficiency up to 94%, supporting flexible switching between hybrid/off-grid/grid-tied modes. This RS485 inverter series comes standard with an RS485 port for seamless BMS and monitoring integration.

Power Range: 1kW–12.3kW, available in 3.3kW/4.3kW/6.3kW/8.3kW/10.3kW/12.3kW specifications

Output Voltage: 220V/230V/240V, compatible with global mainstream grid standards

RS485 Communication: Standard RS485 port for BMS communication, with optional WiFi  remote monitoring modules

Core Configuration: Built-in MPPT controller, lithium battery BMS communication capability via RS485, supports battery-less operation mode, customizable charging parameters

(2) HFP-C Series

High-frequency pure sine wave output with conversion efficiency up to 94%, supporting flexible switching between hybrid/off-grid/grid-tied modes. The inverter RS485 design ensures reliable data exchange with battery systems.

Power Range: 3.3kW–12.3kW

Output Voltage: 220V/230V/240V, compatible with global mainstream grid standards

RS485 Communication: Standard RS485 port, with optional WiFi remote monitoring modules

Core Configuration: Built-in MPPT controller, lithium battery BMS communication capability through RS485, supports battery-less operation mode, customizable charging parameters

Design Features: Dual output, ring LED RGB indicator strip with 8 customizable colors

(3) HFU Series – US-Standard Single-Phase Hybrid Inverter

The HFU series is specifically designed for US and Americas voltage markets, delivering AC110V/120V output to perfectly match local grid standards. Each unit features a dedicated RS485 communication interface for battery and system integration.

Power Specifications: 3.3kW and 6.3kW

Output Voltage: Adjustable from 105V to 120V

Operating Modes: Flexible switching between hybrid/off-grid/grid-tied modes

RS485 Communication: Supports RS485 port, dry contact signal, WiFi,Core Configuration: Built-in MPPT controller, maximum PV input voltage 500V, lithium battery activation function, BMS communication via RS485, supports battery-less operation

(4) HDSX Series – Three-Phase Low-Frequency Inverter

The HDSX series is a low-frequency three-phase inverter designed for industrial equipment, telecom base stations, off-grid sites, and other heavy-duty applications. It supports 100% three-phase unbalanced loading and easily handles inductive impact loads. RS485 is available as an optional communication interface.

Power Specifications: Rated power 3.2kW–24kW

Output Voltage: 380Vac/400Vac three-phase (customizable to 190Vac/200Vac)

Battery Voltage: Standard options 48V/96V

RS485 Communication: Optional RS485 port or mobile APP (WiFi/GPRS) remote monitoring

Core Configuration: Low-frequency pure sine wave output, optional built-in or external MPPT/PWM solar controller, comprehensive protection system including overvoltage, overload, short circuit, and over-temperature protection

In addition to the series above, Xindun Power‘s product line also includes low-frequency split-phase inverters, UPS power supplies, ESS-Li all-in-one energy storage inverters, and Wonder series MPPT controllers – many of which also support RS485 connectivity – covering residential, commercial & industrial, and off-grid power station applications.

OEM/ODM Customization Services

One of Xindun Power’s core strengths as one of the leading Chinese suppliers in this space is our flexible, end-to-end customization service, including panel logo and chassis color customization, output voltage and frequency adjustment, different battery type adaptation, control logic and RS485 communication protocol modification, and multilingual LCD interface support. Whether you‘re an overseas brand owner, engineering contractor, or system integrator, Xindun Power can provide a complete solution from product selection through custom manufacturing – ensuring your RS485 inverter meets the specific requirements of your target market.

For more product details or to discuss potential cooperation, please don’t hesitate to contact us.

5. Conclusion

These are the basic profiles of several representative Chinese suppliers of RS485 hybrid inverter products currently on the market. From industry leaders like Huawei and GoodWe to specialized manufacturers like Xindun Power and First Tech, Chinese suppliers of different scales each have their own positioning and advantages. Large brands offer technology and brand credibility, while medium-sized manufacturers tend to be more flexible in customization and service response.

Buyers can choose the most suitable partner among these Chinese suppliers based on their project requirements, target markets, and budget considerations. Whichever you choose, make sure to confirm the RS485 communication protocol compatibility with your chosen battery brands – this is often where integration issues arise.

If you‘re looking for an RS485 inverter manufacturer that combines quality assurance with flexible customization capabilities, we welcome you to contact Guangdong Xindun Power Technology Co., Ltd. – we offer not just products, but full-process technical support and service protection from selection through after-sales.