SAJ DC Coupled Battery Solution

SAJ (Guangzhou Sanjing Electric Co. Ltd.) stands as a prominent Chinese firm specialising in the exploration, advancement, and manufacturing of solar inverters and energy storage systems. Founded in 2005, the company is headquartered in Changzhou, China.

In its early stages, SAJ directed its efforts towards developing solar inverters tailored for residential and commercial usage. The company swiftly gained renown for crafting top-notch, dependable inverters, known for their ease of installation and operation.

As the demand for solar energy burgeoned, SAJ broadened its product range to encompass inverters suitable for large-scale solar ventures. In 2012, SAJ took a significant step by establishing a research and development centre in Germany to enhance its support for the European market.

The centre is manned by a seasoned team of engineers who collaborate closely with clients to create customised solutions to meet their specific requirements. In 2015, SAJ ventured into the energy storage arena with the debut of its initial lithium-ion battery system.

This system was meticulously engineered to seamlessly integrate with SAJ’s solar inverters, providing customers with a comprehensive energy management solution. Today, SAJ stands among the world’s leading manufacturers of solar inverters and energy storage solutions.

The company boasts a global presence, with offices and distribution centres spanning Europe, Asia, and North America. SAJ’s product applications range from residential rooftop solar installations to extensive solar farms.

The prosperity of SAJ can be ascribed to its steadfast commitment to innovation and quality. The company allocates substantial resources to research and development and possesses a dedicated team of proficient engineers focused on pioneering novel and innovative products.

SAJ upholds a stringent quality control protocol, ensuring that every product leaving its facility complies with the highest standards of quality and reliability. To sum it up, SAJ is a company steeped in a history of innovation and excellence.

Its unwavering dedication to research and development, coupled with its rigorous quality assurance procedures, has propelled it to a leadership position in the solar inverter and energy storage sector. With its global footprint and unwavering focus on customer satisfaction, SAJ is poised for ongoing growth and success in the years ahead.

SAJ’s solar inverters and energy storage systems are produced at the company’s cutting-edge manufacturing facilities located in Changzhou, China. These facilities are equipped with the latest technology and machinery and have an impressive annual production capacity exceeding 10 GW.

SAJ is dedicated to upholding the highest standards of quality and reliability. Every product leaving its factory undergoes rigorous testing to ensure it meets these standards, utilising only top-quality components.

This commitment to quality extends globally, with offices and distribution centres in Europe, Asia, and North America, ensuring local support and product availability worldwide. In essence, SAJ’s global presence, state-of-the-art Chinese manufacturing plants, and unwavering commitment to product excellence establish it as a leading player in the solar inverter industry.

Notably, SAJ has earned numerous awards for its contributions to the renewable energy sector, including:

  • Recognitions from the China Energy Media Summit & Awards
  • TUV Rheinland
  • The Asian Photovoltaic Industry Association
  • Among others

Australian Office ADD

1 Precision Lane

Notting Hill, VIC 3168

Tel : +61 (0) 1800 888 725

Email :

If you wish to complete their contact us online form, this can be found here.

Click on the SAJ H2 3K-6K-S2 Inverter to be taken to the data-sheet
Click on the SAJ B2-5.0-HV1 Battery to be taken to the data-sheet

Single Phase Solution

H2 3K-6K-S2 – 3-6 kW

SAJ, a leading provider of renewable energy solutions, has developed the SAJ Single Phase H2 Hybrid Inverter, which aims to revolutionise solar energy integration for residential and small commercial applications. The SAJ Single Phase H2 Hybrid Inverter is a breakthrough inverter that combines solar power generation, energy storage, and smart grid capabilities into a single device. This innovative solution addresses many of the challenges faced by solar energy users, such as intermittency and grid dependency, while maximizing energy efficiency and cost-effectiveness.

One of the standout features of the SAJ Single Phase H2 Hybrid Inverter is its advanced energy management system, which enables seamless integration of solar power and energy storage. With its intelligent control algorithms, the inverter optimizes the utilisation of solar energy by intelligently switching between solar panel output, battery storage, and grid connections. This ensures a continuous and reliable power supply, even during periods of low solar generation or power outages. This flexibility not only provides users with a reliable backup power source but also allows them to maximize their self-consumption, reducing dependence on the grid and lowering electricity bills.

Another key feature of the SAJ Single Phase H2 Hybrid Inverter is its ability to communicate with the smart grid. Equipped with advanced monitoring and communication functionalities, the inverter can interact with the electricity grid to exchange information and support demand response programs. This enables users to participate in demand-side management initiatives while reducing their reliance on the grid, ultimately leading to lower energy costs and improved grid stability.

The SAJ Single Phase H2 Hybrid Inverter also offers a user-friendly interface, allowing seamless monitoring and control of the system. Through the SAJ mobile app or web portal, users can easily track their energy consumption, solar generation, battery status, and grid interaction with real-time data. This empowers users to make informed decisions about their energy usage, maximize self-consumption, and even sell excess energy back to the grid, where allowed.

In addition, the SAJ Single Phase H2 Hybrid Inverter is designed to withstand harsh environmental conditions. With its rugged and corrosion-resistant enclosure, the inverter is well-suited for installation in diverse locations. This durability ensures a longer lifespan and greater reliability, reducing maintenance requirements and enhancing overall system performance.
Moreover, the SAJ Single Phase H2 Hybrid Inverter offers exceptional efficiency, making it an ideal choice for those looking to maximize their energy production. With its innovative MPPT technology, the inverter is able to accurately track and optimize the energy harvested from solar panels, ensuring that every ray of sunlight is converted into usable electricity.

In conclusion, the SAJ Single Phase H2 Hybrid Inverter offers a range of advanced features that make it an exceptional choice for those seeking a durable, efficient, and user-friendly inverter. With its ability to withstand harsh environmental conditions, optimize energy production, and seamlessly integrate with other components, this inverter is a reliable and sustainable solution for residential and commercial applications alike.

Provided you use the ‘correct’ installation company, the SAJ inverter comes with an industry leading 13 year product warranty and weighs 17.6 kg. They also have no screen on the front, meaning less things to go wrong. The inverter comes in 6 different sizes, 3.0, 3.6, 4.0, 4.6, 5.0 and 6.0 kW. 

This inverter is compatible with the their own SAJ B2 Smart ESS Battery (B2-5.0-HV1 ). The B2 battery has a 90% depth of discharge, they are produced in 5 kWh sizes and you can install between 1-5 in a stack.

Battery Capacity (kWh)510152025
Usable Capacity (kWh)
Click on the SAJ H2-5K-10K-T2 Inverter to be taken to the data-sheet
Click on the SAJ B2-5.0-HV Battery to be taken to the data-sheet

Three Phase Solution

H2-5K-10K-T2 – 5-10 kW

The SAJ H2 Series three-phase inverter is a state-of-the-art product designed to revolutionise the solar energy industry. With its advanced technology and exceptional performance, it sets new standards for efficiency, reliability, and versatility. As the demand for renewable energy sources continues to grow, the SAJ H2 Series comes as an excellent solution for efficient power conversion in photovoltaic systems.

One of the noteworthy features of the SAJ H2 Series three-phase inverter is its exceptional conversion efficiency, which reaches up to an impressive 98.6%. This high efficiency ensures that a maximum amount of solar energy is converted into usable electricity, minimizing energy losses and maximizing the return on investment for users. With its high efficiency, the inverter guarantees optimal energy production, even in challenging environmental conditions or regions with intermittent sunlight.

The SAJ H2 Series inverter is known for its versatility, offering a wide operating voltage range, making it compatible with a variety of solar panel configurations. This flexibility allows system designers and installers to have greater freedom in designing and optimising their photovoltaic systems, meeting the unique requirements and challenges of each project. Additionally, the inverter’s ability to monitor and handle different types of solar panels, including crystalline, thin-film, or bifacial modules, further enhances its adaptability.

Equipped with advanced software and communication capabilities, the SAJ H2 Series inverter enables seamless integration and real-time monitoring of solar energy systems. Through Wi-Fi connectivity, users can remotely monitor and control their systems effectively, ensuring optimal performance and troubleshooting any issues promptly. The inverter’s interface provides detailed information on energy production, consumption, and system status, giving users a comprehensive overview of their system’s performance.

Safety is of utmost importance when it comes to solar energy systems, and the SAJ H2 Series inverter excels in this area. It adheres to rigorous safety standards and features multiple layers of protection mechanisms, ensuring the system’s reliability and the safety of users and their installations. The inverter incorporates protections against overvoltage, overcurrent, and temperature variations, safeguarding the longevity and stability of the entire system.
Additionally, the SAJ H2 Series inverter comes with advanced grid support functions, making it grid-friendly and compliant with local grid requirements. It offers features such as low voltage ride-through capability and reactive power control, ensuring stable and smooth power injection into the grid. This allows for seamless integration of the solar energy system and guarantees its contribution to grid stability.

The SAJ H2 Series inverter is also equipped with a comprehensive monitoring system that allows users to easily track the performance of their solar energy system. With real-time data on energy production, consumption, and grid interaction, users can optimize the performance of their system and maximize their energy savings. In addition, the inverter’s compact design ensures easy installation and maintenance. The SAJ H2 Series inverter is a reliable and efficient solution for harnessing solar energy and integrating it into the grid. With its advanced features and user-friendly design, it paves the way for a more sustainable and resilient energy future.

Provided you use the ‘correct’ installation company, the SAJ inverter comes with an industry leading 13 year product warranty and weighs 25 kg. They also have no screen on the front, meaning less things to go wrong. The inverter comes in 4 different sizes, 5.0, 6.0, 8.0 and 10.0 kW. 

This inverter is compatible with the their own SAJ B2 Smart ESS Battery (B2-5.0-HV1 ). The B2 battery has a 90% depth of discharge, they are produced in 5 kWh sizes and you can install between 2-4 in a stack.

Battery Capacity (kWh)101520
Usable Capacity (kWh)9.013.518.0


PRO – Depends which retailer you buy your system through but some are offering a solid 13 year warranty.

PRO – SAJ have their own service technicians available should your installer not be able to get to you quickly. 

PRO – Australian Office

PRO – They manufacture all components themselves.

PRO – A very good price


CON – Have been making inverters for over 18 years, but only been in the Australian market since 2019

Our Thoughts

A quality product, manufactured by a Chinese company with a strong and long trading history. However they have only be introduced into the Australian market in 2019. But don’t let that put you off. Most companies realise the potential of selling in Australia, so normally put their best foot forward to ensure smooth and timely customer service, and thus far, we have seen SAJ doing exactly that. 

The Australian office allows for warranty issues to be catered for, even if your installation company disappears. You also have the back up that SAJ have their own service technicians, meaning it could be SAJ themselves that come out, in the unlikely event you have an issue.  

They will be a good choice by anyone, that will last the test of time and produce power for years to come. ABSOLUTELY LOVE the fact you can get 13 years product warranty as standard from the ‘right’ installer, that is industry leading. 

We would definitely without a shadow of a doubt, put them on our own house or business.

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