SAJ HS3 Series Home Battery: Smart, Scalable Backup Power for Modern Homes

Power outages are no longer rare events. Across Europe and many global markets, grid instability, extreme weather, and rising electrification are making reliable home backup power a necessity rather than a luxury. For homeowners—and for installers advising them—the challenge is finding a solution that delivers resilience, flexibility, and long-term value without adding complexity.

The HS3 Series Home Battery is designed precisely for this new energy reality. It is not just a battery, but a fully integrated, AI-powered home energy system built to keep homes running, costs under control, and future upgrades simple.

Seamless Backup When the Grid Fails

One of the defining strengths of the HS3 Series is its instant response to power outages. With a built-in 10-millisecond Automatic Transfer Switch (ATS), the system ensures uninterrupted whole-home backup. Lights stay on, appliances keep running, and sensitive electronics remain protected—without flicker or delay.

This ultra-fast switchover makes the HS3 suitable not only for comfort-focused homeowners, but also for properties where reliability is critical, such as homes with heat pumps, medical devices, or home offices.

Scalable Storage That Grows with the Home

Energy needs change over time. Electric vehicles, heat pumps, and higher self-consumption expectations all push households to demand more from their energy systems. The HS3 Series addresses this with a modular battery architecture, starting from 5 kWh and expanding up to 40 kWh.

A key differentiator is its built-in DC/DC optimizer, which allows safe mixing of old and new battery modules. This means homeowners can expand capacity years later without replacing the original batteries—protecting long-term investment value and making upgrades cost-effective.

Designed for Harsh Conditions, Indoors or Outdoors

Reliability is not only about electronics—it’s also about environmental resilience. The HS3 Series is IP65-rated, making it suitable for outdoor installation, and is engineered to operate in extreme temperatures from -30°C to 50°C.

Integrated self-heating technology ensures consistent battery performance in cold climates, while advanced fire suppression systems add an extra layer of safety. This makes the HS3 Series a dependable choice for a wide range of residential environments, from urban homes to rural properties.

AI-Driven Energy Management That Cuts Costs

At the heart of the HS3 Series is an intelligent energy management platform powered by Elekeeper, an AI-driven Smart Energy Management System. Instead of relying on static rules, Elekeeper continuously analyzes:

• Solar generation forecasts

• Household consumption patterns

• Real-time electricity tariffs

• Weather data and grid conditions

Based on this data, the system automatically optimizes charging, discharging, and energy allocation. With features such as One-Click Savings, smart scheduling, and intelligent dispatch, homeowners can reduce electricity bills by up to 20%, while maximizing self-consumption and battery lifespan.

For installers, this translates into fewer manual adjustments and a system that continues to deliver value long after commissioning.

One Integrated System, Fewer Compromises

The HS3 Series stands out as a 6-in-1 Smart Home Energy Storage System, combining:

• Solar inverter

• Battery PCS

• Battery pack

• Backup power functionality

• Energy management system (EMS)

• Integrated 7 kW / 11 kW EV charger

This high level of integration reduces wiring complexity, saves space, and simplifies project design. The system’s ultra-slim 17 cm profile, modular construction, and plug-and-play terminals significantly reduce installation time—an important advantage for installers managing tight schedules and rising labor costs.

Built for Today, Ready for Tomorrow

As homes become more electrified and energy markets more dynamic, flexibility and intelligence are essential. The HS3 Series is designed as a future-proof energy hub, supporting evolving homeowner needs such as EV charging, dynamic tariffs, and deeper integration with solar PV.

For homeowners, it delivers peace of mind, lower bills, and energy independence. For installers and distributors, it offers a scalable, high-value solution that aligns with modern residential energy trends.

The HS3 Series Home Battery represents smart home energy at its best—combining backup reliability, AI-driven savings, and modular flexibility in one cohesive system.