SAJ Home Battery
Family illustration; module count and supplied finish confirmed at quote.
SAJ EK70.
Built around your home.
Choose your storage and connections. We’ll confirm the SAJ system that fits your home.
SAJ EK70 · Single phase · 4.999 kW inverter · 2 × 9 kWh SAJ modules (18 kWh usable).
Backup installation and EV charging are quoted separately and excluded from this guide.
Example equipment shown until you choose yours. Your answers below stay unchanged.
AUD, including GST and base installation; WA and federal rebate eligibility and programme conditions apply.
Equipment availability and installation timing are confirmed with PSW after checking your site and required approvals.
Start with your home.
These are the Australian datasheet inverter ratings. Available battery power also depends on the module combination. We confirm the exact model, connection and network approval for your home.
Your home.
Your starting point.
Already have solar, starting fresh, or thinking ahead to an EV? The starting point changes the design.
Keep your solar.
We’ll check your existing inverter and whether the selected SAJ configuration fits an upgrade.
Explore adding a battery ↗Solar + battery.
Plan your panels, storage and backup together, with each part matched to the way your home runs.
Bring them together ↗An EV in the plan.
Check the charging options for your vehicle. EK90’s vehicle-to-home capability needs a compatible vehicle and a confirmed local design.
Understand the charging options ↓Your questions.
The details that matter.
Before you choose a model, make sure the practical questions are answered.
What’s the difference between EK70 and EK90?
Both belong to SAJ’s HS5 all-in-one family. SAJ positions EK90 around additional vehicle-to-home and vehicle-to-grid capabilities. The exact hardware, compatible vehicle and local operating permissions need checking before those features become part of your quote.
Can I keep my existing solar?
We need to check your existing inverter and how the new system will connect. Adding a battery does not automatically mean replacing every panel.
What stays running during an outage?
Your design identifies the circuits and loads included in backup. The selected system’s output and your switchboard matter as much as the amount of energy stored.
Can my car supply energy to the house?
SAJ describes V2H/V2G capabilities for EK90. This does not mean every EV can support them or that every installation can use them. Vehicle compatibility, charging equipment, local permissions and operating conditions must be confirmed.
Full specifications & installation details
| Manufacturer | SAJ |
| Family | HS5 · EK70 / EK90 |
| Energy management | elekeeper |
| Exact power and capacity | Confirmed for the selected configuration in your quote |
| Backup | Specified for the selected model and circuits |
| Warranty | Confirm applicable Australian model terms |
Your quote records the equipment, usable storage, backup scope and extra site work. Rebate eligibility is confirmed for the nominated models.
When extra costs apply ↗
The battery is one part.
People are the other.
From choosing the equipment to installation and PSW Life Support, there’s a local team to come back to.
Meet the people behind it ↗EK70 or EK90?
Start with what you need.
Compare the two starting points. We’ll confirm the configuration that belongs in your home before you commit.
EK70
Selected for explorationSolar, storage and backup planning
For the energy your home uses today and after sunset.
EK90
Another starting point
A plan that considers your vehicle too
Explore the additional vehicle-to-home capabilities with PSW.
Let’s make SAJ
work for your home.
Bring a bill, your existing solar details and the questions you want answered. We’ll help you work through the rest.
Explore my SAJ options ↑