About SAJ
In 2005, SAJ was established. Guangzhou Sanjing Electric Co. LTD is its full name. I’m happy they shortened that to SAJ, though I’m not sure how they did it.
The business is situated in Guangzhou City. Although my grandparents called this city Canton, try not to use that name if you want Chinese people to understand what you mean. Guangzhou Science City, which sounds like something from a comic book, is the exact location of SAJ. In reality, tech-focused businesses use it as an industrial area. I don’t know if there are superheroes protecting it or not.
What is the SAJ Battery?
The SAJ Battery is a lithium-ion energy storage system that works with your solar panels and inverter to save excess energy produced during the day. Instead of sending that power back to the grid, you can store it and use it later—cutting down your electricity costs and giving you peace of mind.
This battery is ideal for:
- Residential homes with rooftop solar
- Small businesses looking to cut energy costs
- Off-grid or hybrid systems
- Backup power during outages
Key Features of SAJ Battery
Here’s why Australians love the SAJ Battery:
1. Smart Energy Management
SAJ batteries come with an advanced battery management system (BMS) that automatically controls charging and discharging. This helps you get the best performance and battery life.
2. High Efficiency
You get more usable power from your solar panels with up to 95% efficiency. It reduces waste and maximises savings.
3. Safe and Reliable
Equipped with multi-layer protection, SAJ Batteries are safe from overheating, short circuits, and overcharging. They are tested to meet Australian safety standards.
4. Easy Installation
The SAJ Battery is made to be easy to install with most solar systems in Australia. Our expert team at Aussie Solar Tech will help you set it up quickly and safely.
SAJ Battery Series in Australia
SAJ is one of the top solar battery brands in Australia, offering smart and reliable storage solutions for homes and businesses. Whether you’re looking to reduce power bills, gain energy independence, or store solar energy for nighttime use. The SAJ B2 Series battery is a modular, high-performance lithium battery system designed for Australian homes and businesses. With stackable units ranging from 5kWh to 25kWh, it offers up to 90% usable capacity, safe LiFePO₄ chemistry, and a weatherproof IP65-rated design. Perfect for both new solar setups and upgrades, the B2 Series is cost-effective, easy to install, and backed by a 10-year warranty.
At Aussie Solar Tech, we offer the full range of SAJ Battery Series, professionally installed and supported by Australian experts.
SAJ Battery HS2 Series – Three-Phase Hybrid All-in-One Solution
The SAJ HS2 Series is a complete solar and battery solution for homes and businesses with three-phase power. It includes models like HS2-(5-10K)-T2 and HS2-(3-6K)-S2, combining a hybrid inverter with expandable lithium battery storage. SAJ calls their all-in-one batteries “HS2 Series”. It comes in different models to fit your power needs:
Key Features of HS2 Series:
- All-in-One Hybrid System
Inverter + Battery + Management system in one compact unit
- UPS Function (Uninterrupted Power Supply)
Switches to backup in less than 10ms during a blackout
- Modular & Expandable
Start from 5kWh and expand up to 25kWh
- Outdoor IP65 Rated
Built to last in harsh Australian weather
- Easy Installation
Pre-wired and quick to set up
- High Power Input
Supports up to 16A input current – ideal for large solar panels
- 100% Three-Phase Support
Manages voltage imbalance for stable performance
- Advanced Lithium Battery (LiFePO4)
Safe, long-lasting, and efficient battery technology
SAJ Battery B2 Series High & Low Voltage Battery
SAJ Battery B2 Series-HV is a smart and powerful high-voltage lithium battery system designed to meet modern solar energy needs. It is ideal for both residential and commercial solar setups. It works seamlessly with hybrid inverters to provide stable and efficient energy storage, helping users reduce electricity bills and increase solar energy usage. The pack of B2 Battery contains battery modules and a BMS controller. The number of battery modules can be flexibly matched according to the user’s power demand, and up to 5 modules can be connected (25.0kWh).
It comes in different models to fit your power needs:
Key Features of B2 Series:
- Battery Type LiFePO4
- Remote firmware upgrade
- IP65 outdoor design
- Easy Installation
SAJ Solar Batteries — Quick pros & cons
Affordable entry-level pricing — among the lowest $/kWh in market
Warranty throughput is lower than many premium alternatives
Modular and stackable design up to 25.6kWh
Shorter history in Australia, with lower market presence than other major brands
IP65 rating — suitable for outdoor installs
No advanced safety systems (e.g., fire suppression, active cooling)
All-in-one HS2 series simplifies installation for new systems
Limited compatibility outside SAJ ecosystem
SAJ Battery Smart Monitor – Easy Energy Monitoring for Smarter Solar Use
The SAJ Battery Smart Monitor is a user-friendly tool designed to help you track and manage your solar energy usage in real-time. It connects with your SAJ inverter and battery system to show live data such as power generation, battery charge level, energy consumption, and grid interaction. You can view all this information directly from your smartphone or computer.
With the SAJ Smart Monitor, you can:
✅ Monitor your system 24/7 – Check how much solar power you’re generating and using.
✅ Track battery status – See how much energy is stored or being used.
✅ Reduce electricity bills – Use insights to optimize your energy usage and save money.
✅ Easy to use – Clean dashboard, available on the SAJ App and Web Portal.
✅ Get alerts & reports – Receive system notifications and performance summaries.
SAJ Battery Price in Australia 2026 (Updated Cost & Rebate)
| Battery Capacity |
Price Before Rebate (AUD) |
Price After Rebate (AUD) |
| 5 kWh |
$6,008 |
$4,328 |
| 10 kWh |
$8,016 |
$4,656 |
| 15 kWh |
$10,025 |
$4,985 |
| 25 kWh |
$12,925 |
$4,525 |
| 30 kWh |
$14,950 |
$4,870 |
| 40 kWh |
$18,550 |
$5,110 |
| 50 kWh |
$21,150 |
$4,350 |
At Aussie Solar Tech, we proudly supply and install top-quality SAJ solar battery systems across Australia. These batteries are designed to help both homeowners and businesses cut energy bills, store excess solar energy, and provide reliable backup power during blackouts.
The SAJ B2 Series lithium batteries feature a modular and stackable design, ensuring flexible installation and high performance. We offer a wide range of SAJ battery sizes to suit different energy needs. The 5kWh SAJ battery price is approximately AUD $6,008, 10kWh SAJ battery price is approximately AUD $8,016, 15kWh SAJ battery price is approximately AUD $10,025, 25kWh SAJ battery price is approximately AUD $12,925, 30kWh SAJ battery price is approximately AUD $14,950, 40kWh SAJ battery price is approximately AUD $18,550, and the 50kWh SAJ battery price is approximately AUD $21,150.
👉 After the Australian Federal Government home battery rebate, the 5kWh SAJ battery price is approximately AUD $4,328, 10kWh SAJ battery price is approximately AUD $4,656, 15kWh SAJ battery price is approximately AUD $4,985, 25kWh SAJ battery price is approximately AUD $4,525, 30kWh SAJ battery price is approximately AUD $4,870, 40kWh SAJ battery price is approximately AUD $5,110, and the 50kWh SAJ battery price is approximately AUD $4,350.
This price will depend on the inverter capacity, battery series, and available rebate. To know the exact price and available rebate, request a free quote today!
SAJ Battery Warranty for Australian Customers
SAJ batteries come with a 10-year product and performance warranty for the B2, BU2, AS2, and HS2 series. The warranty guarantees that t he battery will retain at least 70% of its nominal capacity at the end of 10 years, which aligns with common industry standards. SAJ also applies a throughput limit of approximately 3.06 MWh per usable kWh over the warranty period. While this throughput is lower compared to some premium brands, SAJ batteries remain eligible for Australian rebates and are supported by SAJ’s local Australian service team, offering reliable coverage and peace of mind.
Why Buy SAJ Battery from Aussie Solar Tech?
At Aussie Solar Tech, we are committed to bringing the best solar products to Australian homes and businesses. We are proud to provide: Competitive Prices, Professional installation by certified solar experts, Full system setup & after-sales support in Australia, Fast Delivery and Genuine Products. Aussie Solar Tech offers Saj Solar Battery installation and sales across major Australian cities:
- Canberra
- NSW
- Melbourne
- Queensland
No matter your location, our experienced team ensures a smooth and efficient installation process, tailored to your unique energy needs. Our team is always ready to help you choose the right battery based on your solar usage and budget.
Call Us Now
Ready to upgrade your solar system with the SAJ Battery? Don’t wait! Call us today to talk with our friendly experts. We’ll help you choose the best battery for your home or business and guide you through the easy installation.
The Most Common Questions About SAJ Solar Batteries
1. Who makes SAJ batteries?
SAJ batteries are made by SAJ Power, a Chinese company specializing in solar inverters and energy storage.
2. Are SAJ solar batteries any good?
Yes, SAJ batteries are reliable, cost-effective, and suitable for small to medium households.
3. Which inverter is better, SAJ or Growatt?
Both are good, but Growatt inverters are generally more popular for performance and advanced features.
4. What is the warranty on SAJ batteries?
SAJ batteries typically come with a 5–10 year warranty, depending on the model.
5. What is the SAJ battery price in Australia?
The SAJ battery price in Australia typically ranges from AUD $6,000 to $21,000 depending on battery size. After government rebates, prices can drop to around AUD $4,300–$5,100.
