SAJ AS1 AC Retrofit Storage System, 5.1kWh battery

SAJ continues to advance the future of clean energy with its innovative range of inverter and storage technologies, designed for efficient, scalable solar energy solutions across all applications. With a focus on performance, reliability, and smart integration, SAJ’s energy systems help users optimise consumption, reduce grid reliance, and take full control of their renewable power.

The SAJ-AS1-3KS-5.1 is a flexible AC retrofit storage system designed to transform existing on-grid solar setups into complete energy storage systems. Featuring a 3kW AC coupling inverter paired with a 5.1kWh lithium-ion battery, this system enables households to store surplus energy for later use — reducing dependence on the grid and boosting energy independence.

Compatible with all on-grid inverters, the AS1-3KS-5.1 offers seamless integration, supports both grid-tied and off-grid operation, and includes intelligent energy management with real-time monitoring through mobile or web platforms. Its IP65-rated enclosure ensures safe outdoor performance, while built-in protections provide secure, reliable operation.

Key Features:

• AC Retrofit Design: Enhances existing on-grid systems by adding storage without replacing the current inverter

• 3kW AC Coupled Inverter: Efficiently manages energy flow between solar, storage, and home loads

• 5.1kWh Lithium-Ion Battery: Stores excess solar power for use during peak hours or outages

• Universal Compatibility: Works with any existing on-grid inverter for versatile integration

• Grid-Tied and Off-Grid Operation: Maintains power supply during grid failures or blackouts

• Up to 98% Efficiency: Delivers optimal performance through high-efficiency energy conversion

• Smart Energy Management: Supports time-of-use scheduling and load optimisation

• Remote Monitoring: Real-time system tracking via SAJ’s user-friendly mobile app

• Outdoor Ready: IP65-rated, weather-resistant casing ensures durability and safe outdoor installation

• Comprehensive Safety Features: Includes protection against overvoltage, short circuits, and system anomalies

The SAJ-AS1-3KS-5.1 retrofit storage system is a practical, high-efficiency solution for upgrading residential solar systems, empowering users to maximise solar usage, reduce energy bills, and enjoy a more resilient energy lifestyle.