Batteries
SAJ B2 High Voltage Battery
Scalable High-Voltage Energy Storage for Modern Homes
About the SAJ B2 High Voltage Battery
The SAJ B2 High Voltage Battery is a modular, high-performance energy storage solution designed for households looking to maximise solar usage and reduce reliance on the grid. Built with safe LiFePO4 battery chemistry and a flexible modular design, the B2 system allows you to scale your storage based on your energy needs.
With capacity ranging from 5.12 kWh up to 25.6 kWh, the SAJ B2 is ideal for homeowners who want a future-proof system that grows alongside their energy consumption.
Why choose the SAJ B2?
The SAJ B2 is designed to deliver flexibility, performance, and simplicity — making it a strong option for both new solar installs and battery upgrades.
Key benefits include:
High-voltage battery system for improved efficiency
Expandable from 5.12 kWh to 25.6 kWh
Modular stackable design (1-5 modules)
Safe cobalt-free LiFePO4 battery chemistry
Wall-mounted or ground-mounted installation
IP65 rated for indoor and outdoor use
Remote firmware upgrades
Compact, modern design
Built for flexibility
The SAJ B2 system uses a modular battery structure, allowing you to customise your storage capacity based on your household needs.
Each module delivers approximately 5.12 kWh, and the system can be expanded up to 5 modules, giving you a total of 25.6 kWh.
This makes it ideal for:
- starting small and expanding later
- households adding EVs or electric appliances
- growing families with increasing energy demand
High-voltage performance
Unlike low-voltage systems, the SAJ B2 operates as a high-voltage battery, allowing for:
- improved system efficiency
- lower current and reduced energy losses
- better compatibility with modern hybrid inverters
This results in more efficient energy transfer and improved overall system performance.
Simple installation, smarter design
The SAJ B2 is designed with installers and homeowners in mind. Its stackable modular structure makes installation straightforward while keeping the system neat and compact.
Installation options include:
- Wall-mounted (optional)
- Ground-mounted
This flexibility ensures it can suit a wide range of home layouts.
Remote updates & smart operation
The system supports remote firmware upgrades, allowing updates to be completed without the need for on-site servicing. This reduces maintenance costs and ensures your system stays up to date with the latest improvements.
Built for real-world conditions
With an IP65 rating, the SAJ B2 is designed to handle Australian conditions, making it suitable for both indoor and outdoor installations.
It's built to be reliable, durable, and low-maintenance for long-term performance.
Key specifications
System
| Category | Specifications |
|---|---|
| Model | SAJ B2 High Voltage Battery |
| Battery chemistry | LiFePO4 (cobalt-free) |
| Modules | 1 – 5 |
| Rated energy | 5.12 – 25.6 kWh |
| Usable energy | 4.6 – 23 kWh |
Electrical
| Category | Specifications |
|---|---|
| Nominal voltage | 102.4 – 512 V |
| Charge voltage | 115.2 – 576 V |
| Max charge current | 30 A |
| Max discharge current | 30 A |
Physical
| Category | Specifications |
|---|---|
| Control module dimensions (H × W × D) | 220 × 626 × 365 mm |
| Control module weight | 11 kg |
| Total system weight | 50.5 – 252.5 kg |
Installation & protection
| Category | Specifications |
|---|---|
| IP rating | IP65 |
| Mounting | Wall-mounted (optional) or ground-mounted |
| Communication | CAN |
Who is this battery suited for?
The SAJ B2 is ideal for households that:
- want a high-voltage battery system
- need flexible, scalable storage
- are planning for future energy usage (EVs, electrification)
- want a clean, modular design
- are looking for a reliable, low-maintenance solution
Smart storage that grows with you
The SAJ B2 High Voltage Battery gives you the flexibility to start small and scale as your energy needs evolve. With its high-voltage efficiency, modular design, and remote upgrade capability, it's built for the next generation of smart homes.
Explore other batteries
Tesla Powerwall 3
View details
Alpha ESS Batteries
View details
Ambrion Raybox HS2
View details
Anker SOLIX X1
View details
Sigenergy Sigenstor
View details
Fox ESS Battery
View details
Growatt AXE
View detailsGet a FREE SAJ B2 Quote today!
Prefer to talk to our expert team?
Call us now or request a call back from one of our staff. The choice is yours.
