SAJ HS3: The Most Compact Yet Powerful Home Battery

In today’s residential energy market, homeowners demand solutions that are efficient, smart, and space-conscious. SAJ’s HS3 answers that call as the thinnest 6-in-One home battery on the market, measuring just 17 cm slim. Compact in size but remarkable in capability, HS3 is designed to fit seamlessly into any home environment—indoor or outdoorwithout compromising performance.

Ultra-Compact Design for Every Home
Why size matters: Many energy storage systems are bulky, limiting installation options. HS3 changes the game with its slim, adaptable design.

1. Flexible Installation in Any Environment
Whether it’s a small garage, tight indoor area, or outdoor wall, HS3 can be installed effortlessly, maximizing space while maintaining full functionality.

2. Classic, Elegant Design
With a sleek and timeless appearance, HS3 blends naturally into home interiors or outdoor spaces, enhancing the home’s aesthetic while delivering cutting-edge energy storage.

Powerful Performance in a Compact Package
HS3 isn’t just compact—it’s packed with features that set it apart from other home energy storage solutions:


1 – 6-in-One Integration
Unlike other brands that offer only 3- or 5-in-One solutions, HS3 integrates solar inverter, EV charger, battery PCS, battery pack, backup, and Energy Management System into a single, cohesive unit.

2. Energy That Expands, Effortlessly
Start with a 5 kWh battery pack and easily expand to 40 kWh as customers’ needs grow. While mixing batteries typically risks damaging energy storage systems, the HS3 is designed to overcome this challenge. With a DC-DC optimizer in each pack of HS3, SAJ enables seamless integration of old and new batteries. Its flexible expansion design allows you to add new batteries to the existing system with ease.

3. Fast & Easy Installation and Enhanced User Experience
Designed for ease-of-use, HS3 features: Modular construction and Blind Plug Design Built-in diagnostic tools for real-time feedback and troubleshooting

4. Extreme Climate Resistance and High Safety
The HS3 Series is engineered for reliable performance under harsh conditions: Integrated thermal boosting function operates at temperatures as low as -30°C Built-in fire suppression system activates within 3 seconds at 185°C Stable energy supply and maximum safety for homeowners

5. Smart Energy, Save Energy Bills
SAJ elekeeper AI Saving 2.0 The intelligent EMS app optimizes energy use across appliances, real-time tariffs, and weather conditions—helping homeowners save up to 20% on electricity bills effortlessly.

6. Proven Stability and Local Support
With over 15 years of experience in residential energy solutions, SAJ are proud to present its third-generation home energy storage system, developed on the proven foundation of the H1, B1, and HS2. Engineered for durability and
reliability, this latest system embodies their ongoing commitment to innovation and quality. To ensure every customer receives timely and dependable service.

SAJ has established dedicated technical support teams across Ireland, the UK, and Europe.SAJ HS3: The Most Compact Yet Powerful Home Battery