SAJ EK70 HS5 All-in-One Solar Battery System

Power your home or business with a smarter, future-ready energy storage solution from Fusion Sun Solar. Our SAJ EK70 HS5 All-in-One Solar Battery System Perth is designed to deliver intelligent energy management, reliable battery storage and powerful backup capability for homes and businesses across Perth, WA. Combining a high-performance hybrid inverter with modular 9kWh LiFePO₄ battery storage, the SAJ EK70 HS5 brings solar generation, energy storage and smart energy management together in one streamlined system. Designed to maximise solar self-consumption, reduce reliance on the electricity grid and help you make better use of your solar energy, the EK70 HS5 provides a practical and scalable solution for changing energy needs.

The SAJ EK70 HS5 All-in-One System is available in flexible single-phase and three-phase configurations, with inverter options ranging from 5kW to 10kW single-phase and 10kW to 20kW three-phase. Its modular battery architecture supports 2 to 6 battery modules, providing up to 54kWh of usable energy storage when fully expanded. With built-in 63A whole-home backup, backup switching of up to ≤10 milliseconds, intelligent DC/DC battery optimisation, Wireless-Pro smart metering and SAJ's elekeeper energy management platform, the EK70 HS5 is designed to give Perth households and businesses greater control over how they generate, store and use energy.

At Fusion Sun Solar, we supply and professionally install SAJ EK70 HS5 systems tailored to your property's energy requirements. Whether you're looking to install a new solar and battery system, add substantial battery storage to an existing solar installation, or improve your energy independence with dependable backup power, the SAJ EK70 HS5 All-in-One Solar Battery System offers scalable storage, intelligent energy optimisation and a clean, integrated design. With AI-powered energy management, VPP-ready functionality and a modular architecture designed for future expansion, the EK70 HS5 is a smart choice for Perth homeowners and businesses looking for a more efficient and resilient energy solution.

Why Choose the SAJ EK70 HS5 All-in-One Solar Battery System?

• Designed for Perth homes, large residences, farms, and businesses, the SAJ EK70 HS5 All-in-One System provides an integrated solution for solar generation, battery storage, energy management, and reliable backup power. Available in both single-phase and three-phase configurations, it can be tailored to different property sizes and energy requirements.
• The all-in-one design combines the hybrid inverter and modular high-voltage LiFePO₄ battery storage into one streamlined system, reducing the need for separate components and creating a clean, integrated energy storage solution for your property.
• Scalable battery storage up to 54kWh allows you to choose a configuration suited to your current energy consumption while providing the flexibility to expand your storage capacity as your energy requirements grow. The EK70 HS5 supports multiple battery configurations using SAJ's high-voltage LiFePO₄ battery modules.
• Built-in 63A bypass and whole-home backup functionality help keep your property powered during grid interruptions. The system incorporates an automatic transfer function and seamless backup switching, with a specified transfer time of ≤10 milliseconds for rapid changeover to backup power.
• Intelligent SAJ elekeeper energy management helps optimise solar generation, battery charging, energy consumption, and grid interaction. The HS5 also supports AI-powered energy optimisation through AI Saving 3.0, with functions designed for scenarios such as peak shaving, EV charging, temporary scheduling and VPP participation.
• Advanced battery optimisation with a built-in DC/DC optimiser enables independent battery charging and discharging management, helping improve the performance of individual battery modules and supporting seamless capacity expansion. SAJ specifies battery performance of up to 10,000 cycles under its stated test conditions.
• The three-phase EK70 HS5 models feature three MPPT trackers and support recommended PV input capacities of up to 40kW on the 20kW model, providing flexibility for larger solar installations and helping optimise solar generation across different roof orientations.
• Built for demanding Australian conditions, the system features an IP66-rated enclosure, smart air cooling, C4 corrosion resistance and operation at altitudes up to 3,000 metres. The battery system also incorporates multiple protection measures, including temperature monitoring, thermal aerosol fire suppression and a decompression valve.
• Wireless-Pro metering and app-assisted commissioning simplify installation and system setup, while WLAN, Fast Ethernet, RS485 and optional SAJ communication solutions support system monitoring and connectivity.
• Professionally supplied and installed by Fusion Sun Solar, the SAJ EK70 HS5 can be customised around your property's solar generation, electricity consumption, battery requirements and backup needs, giving Perth homeowners and businesses a smarter path towards greater energy independence.

SAJ EK70 HS5 Hybrid Inverter Specification

At the heart of the SAJ EK70 HS5 All-in-One Solar Battery System is the integrated SAJ EK70 HS5 hybrid inverter, designed to efficiently manage solar generation, battery storage, household loads and grid interaction. Available in single-phase and three-phase configurations, the EK70 HS5 provides a flexible energy solution for Perth homes and businesses, with the three-phase range offering inverter capacities from 8kW to 20kW and three MPPT trackers for efficient solar generation across different roof orientations.

The SAJ EK70 HS5 hybrid inverter is designed for high-performance energy storage and reliable backup power. Its integrated architecture works with SAJ's high-voltage LiFePO₄ battery modules, while intelligent energy management helps optimise when solar energy is generated, stored and used. With whole-home backup capability, rapid backup switching, built-in battery optimisation and smart monitoring, the EK70 HS5 provides Perth households and businesses with greater control over their energy, improved solar self-consumption and increased energy independence.

SAJ EK70 BU5-9.0-TV High Voltage Battery Specifications

The SAJ EK70 BU5-9.0-TV is a high-voltage LiFePO₄ battery designed for use with the SAJ EK70 HS5 All-in-One Solar Battery System. With a 9.0kWh capacity per battery pack, it provides a reliable way to store excess solar energy for later use, helping Perth homes and businesses increase solar self-consumption and reduce their reliance on grid electricity. Its modular design allows battery capacity to be scaled according to the property's energy requirements, making it suitable for applications ranging from larger residential systems to higher-demand energy storage installations.

Designed with safety, flexibility and long-term performance in mind, the EK70 BU5-9.0-TV integrates with the EK70 HS5's intelligent battery management and energy optimisation functions. Multiple battery packs can be combined to create larger storage configurations, with the EK70 HS5 supporting systems of up to 54kWh. The high-voltage architecture, modular installation design and integrated battery protection features make the SAJ EK70 BU5-9.0-TV a practical storage solution for customers in Perth, WA seeking scalable solar battery storage and greater energy independence.

Frequently Asked Questions