SAJ EK70: The Small Detail That Could Simplify Your Install | All Energy Australia 2026

A modular approach to a home battery installation

Adding a battery to an existing home involves more than finding space for the battery itself. The inverter, meter, backup equipment and cabling also need to be accommodated, which can make a previously clear wall or garage corner quite crowded.

SAJ’s EK70 and EK90 are part of its HS5 platform. The concept is to bring the solar inverter, batteries, backup switching and energy management together as one modular system rather than installing each item as a separate project.

The inverter and battery modules are 27 cm deep. Installation clearances are still necessary, but the relatively shallow design may be useful where garage space is limited. The battery modules use blind mate connectors, so the connections line up as the sections are stacked, reducing the need for external cabling between modules.

The LoRa meter is the notable installation detail

The feature that could have the biggest practical effect on some installations is SAJ’s LoRa meter, also referred to in the video as a wireless meter. It is intended to communicate between the home’s power box and the battery without requiring a dedicated communications cable between the two locations.

SAJ says the meter can operate over up to one kilometre and through five concrete walls. That could be useful where the battery is installed in a detached garage, shed or another location that is a long way from the switchboard. The claim comes from SAJ and should be checked against the conditions of a particular property before installation.

Avoiding a cable run may simplify some retrofit installations, but the battery still needs to be installed with the required electrical connections, clearances and other site requirements.

Battery sizing, backup and expansion

The range includes 6, 7 and 9 kWh battery blocks. The transcript gives an example of two 9 kWh modules providing 18 kWh of storage, while some early Australian configurations are described as reaching up to 54 kWh with six modules in one stack.

Storage capacity and power output are different considerations. The battery’s kilowatt-hour capacity indicates how much energy can be stored, while the inverter’s kilowatt rating indicates how much power can be delivered at once. A larger storage capacity does not automatically mean the system can run every high-load appliance simultaneously.

SAJ says both the EK70 and EK90 include an automatic transfer switch and gateway for backup. The company describes this as providing full-home backup. Single-phase and three-phase versions are available, with Australian EK70 configurations described as reaching 10 kW and 20 kW respectively. The battery stack must also be able to supply the required power. Expansion is supported within the available combinations, so installation space may need to be retained for additional modules.

What the EK90 adds

SAJ describes the EK70 as a more cost-effective, mid-range system with a 10-year warranty. The EK90 is positioned as the premium version, with upgraded internal components, a stated 15-year warranty and 12,000 cycles.

The cycle figure should not be read as a promise of 12,000 full cycles under all warranty conditions. The warranty also depends on terms such as the amount of energy passing through the battery, so the complete warranty documentation should be checked before choosing between the systems.

The batteries are described as lithium iron phosphate units with temperature monitoring, pressure relief and aerosol fire suppression. SAJ also refers to thermal protection and multiple safety layers. These are product claims discussed at the show, rather than an independent test result.

Energy management and future vehicle integration

SAJ’s elekeeper energy management system is intended to coordinate solar generation, battery charging and supported devices. The company says its AI-based functions use weather forecasts and electricity rates to help plan when the battery charges and discharges. Users can also retain some charge for a possible blackout, depending on the system’s configuration and settings.

Vehicle-to-home and vehicle-to-grid functions are described as enabled within the package but still waiting for final approvals before market availability. The vehicle, charger and local Australian availability will all need to align before those features can be used in practice.